Abstract
A spread-spectrum code division multiple access interference canceler system and method for reducing interference in a spread-spectrum CDMA receiver having N chip-code channels with each of the N channels identified by a distinct chip-code signal. The interference canceler system comprises a plurality of interference cancelers each having chip-code generators delay devices correlators spread-spectrum-processing circuits and subtracting means. Using a plurality of chip-code signals the correlators despread the spread-spectrum CDMA signal as a plurality of despread signals respectively. The spread-spectrum-processing circuits use a timed version of the plurality of chip-code signals generated by the delay devices for spread-spectrum processing the plurality of despread signals respectively with a timed chip-code-signal corresponding to a respective despread signal. For recovering a channel subtracting means subtracts the spread-spectrum-processed-despread signals other than the signal of the desired channel of the spread-spectrum CDMA signal. The system may further comprise a CDMA/DS detector for receiving a spread-spectrum signal a plurality of interference cancelers connected in series for generating a plurality of estimates of the spread-spectrum signal combining means for combining the estimates as averaged estimates and decision means for receiving the averaged estimates.
| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC | No | Family Member | ||||
| Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
Specification Information
Specification Information
Technologies
Family Information
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| All Pending Patents In Patent Family : | ---- |
| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | |||||||
| WO9603819A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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No | Family Member | |||
| WO9603819A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| WO9603819A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| WO9603819A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| WO9603819A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US5719852A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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Yes | Basis Patent | |||
| US5719852A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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No | Family Member | |||
| US5719852A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
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| US6014373A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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Yes | Basis Patent | |||
| US6014373A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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| FI970276A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| FI970276A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| FI117612B | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| FI117612B | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| FI117612B | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| FI20050232A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| FI20050232A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| FI20050232A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1030697A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1030697A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1030697A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1030697A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1030697A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050965A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1050965A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050965A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050965A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050965A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050966A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1050966A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050966A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050966A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050966A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050967A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1050967A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050967A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| HK1050967A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1050967A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1065190A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1065190A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1065190A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP3153894B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| JP3153894B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP3153894B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JPH10504429A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| JPH10504429A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JPH10504429A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP2001053721A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| JP2001053721A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP2001053721A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP2001053721A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP2001053721A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP3377983B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| JP3377983B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3377983B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| JP3377983B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| JP3377983B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| MX9700522A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| MX9700522A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| MX9700522A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| MX9700522A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| MX9700522A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| NZ290723A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
Yes | Basis Patent | |||
| NZ290723A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| NZ290723A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| NZ290723A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| NZ314383A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
Yes | Basis Patent | |||
| NZ314383A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| NZ314383A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| NZ314383A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE521137C2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE521137C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE521137C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE9700184L | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE9700184L | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE9700184L | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0302105L | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE0302105L | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE0302105L | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE0302105L | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0302105L | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE527579C2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE527579C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE527579C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| SE527579C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE527579C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE528965C2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE528965C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE528965C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0700241L | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE0700241L | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0700241L | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE532857C2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE532857C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE532857C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0702343L | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE0702343L | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE0702343L | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE532856C2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| SE532856C2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| SE532856C2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6259688B1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US6259688B1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6259688B1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6259688B1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6259688B1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2001019548A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2001019548A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2001019548A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2001019548A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2001019548A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6868076B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US6868076B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6868076B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6868076B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6868076B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172171A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002172171A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172171A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172171A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172171A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7164668B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7164668B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7164668B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7164668B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7164668B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172172A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002172172A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172172A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172172A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172172A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7161919B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7161919B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7161919B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7161919B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7161919B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172173A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002172173A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172173A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002172173A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002172173A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7167464B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7167464B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7167464B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7167464B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7167464B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002167925A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002167925A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002167925A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002167925A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002167925A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7167462B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7167462B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7167462B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7167462B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7167462B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2003002463A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2003002463A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2003002463A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2003002463A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2003002463A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6876665B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US6876665B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6876665B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6876665B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6876665B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002191571A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002191571A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002191571A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002191571A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002191571A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6868078B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US6868078B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6868078B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US6868078B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US6868078B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002196757A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2002196757A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002196757A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US2002196757A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2002196757A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7230938B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7230938B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7230938B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | Yes | Basis Patent | ||||
| US7230938B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7230938B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2005157743A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2005157743A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2005157743A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7027423B2 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US7027423B2 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US7027423B2 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2007258412A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US2007258412A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US2007258412A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1066657A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1066657A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1066657A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1066945A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| HK1066945A1 | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| HK1066945A1 | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| BR9508348A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| BR9508348A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| BR9508348A | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| CN1097368C | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| CN1097368C | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| CN1097368C | Not Available | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Multiple access
Product
Use Cases
Services
Claim
1. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a plurality of interference cancelers, each of said plurality of interference cancelers including, means for generating a plurality of chip-code signals; means for despreading, using the plurality of chip-code signals, a spread-spectrum CDMA signal as a plurality of despread signals, respectively; means for timing the plurality of chip-code signals to generate a plurality of timed chip-code signals; means, responsive to the plurality of timed chip-code-signals, for spread-spectrum processing the plurality of despread signals with the plurality of timed chip-code-signals, respectively; means, for an ith chip-code signal, for subtracting from the spread-spectrum CDMA signal each of an N-1 plurality of spread-spectrum processed despread signals, with the N-1 plurality of spread-spectrum processed despread signals not including the ith spread-spectrum processed despread signal of an ith despread signal, thereby generating a subtracted signal; and channel means for despreading the subtracted signal with the ith timed chip-code signal as an ith channel signal.', 'a plurality of interference cancelers, each of said plurality of interference cancelers including,', 'means for generating a plurality of chip-code signals;', 'means for despreading, using the plurality of chip-code signals, a spread-spectrum CDMA signal as a plurality of despread signals, respectively;', 'means for timing the plurality of chip-code signals to generate a plurality of timed chip-code signals;', 'means, responsive to the plurality of timed chip-code-signals, for spread-spectrum processing the plurality of despread signals with the plurality of timed chip-code-signals, respectively;', 'means, for an ith chip-code signal, for subtracting from the spread-spectrum CDMA signal each of an N-1 plurality of spread-spectrum processed despread signals, with the N-1 plurality of spread-spectrum processed despread signals not including the ith spread-spectrum processed despread signal of an ith despread signal, thereby generating a subtracted signal; and', 'channel means for despreading the subtracted signal with the ith timed chip-code signal as an ith channel signal.
2. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said despreading means including:a filter; a chip-code generator for generating a chip-code signal from a respective chip codeword; and a mixer coupled between said filter and said chip-code generator.', 'a filter;', 'a chip-code generator for generating a chip-code signal from a respective chip codeword; and', 'a mixer coupled between said filter and said chip-code generator.
3. The spread-spectrum CDMA interference canceler system as set forth in claim 2 with said channel means including:a filter; a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and a mixer coupled between said filter and said chip-code generator.', 'a filter;', 'a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and', 'a mixer coupled between said filter and said chip-code generator.
4. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said despreading means including a matched filter having an impulse response matched to a respective chip codeword.
5. The spread-spectrum CDMA interference canceler system as set forth in claim 4 with said channel means including:a filter; a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and a mixer coupled between said filter and said chip-code generator.', 'a filter;', 'a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and', 'a mixer coupled between said filter and said chip-code generator.
6. The spread-spectrum CDMA interference canceler system as set forth in claim 4 with said channel means including a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel.
7. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said channel means including:a filter; a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and a mixer coupled between said filter and said chip-code generator.', 'a filter;', 'a chip-code generator for generating a chip-code signal from a chip codeword corresponding to the ith channel signal; and', 'a mixer coupled between said filter and said chip-code generator.
8. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said despreading means including a digital signal processor with digital matched filter having an impulse response matched to a respective chip codeword.
9. The spread-spectrum CDMA interference canceler system as set forth in claim 8 with said channel means including a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
10. The spread-spectrum CDMA interference canceler system as set forth in claim 8 with said channel means including a surface acoustic wave (SAW) device having an impulse response matched to a chip codeword corresponding to the ith channel
11. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said channel means including a digital signal processor with digital matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
12. The spread-spectrum CDMA interference canceler system as set forth in claim 1 with said despreading means including a surface acoustic wave (SAW) device having an impulse response matched to a chip codeword corresponding to the ith channel
13. The spread-spectrum CDMA interference canceler system as set forth in claim 12 with said channel means including a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
14. The spread-spectrum CDMA interference canceler system as forth in claim 12 with said channel means including a chip-code generator for generating a chip-code signal from a digital matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
15. The spread-spectrum CDMA interference canceler system forth in claim 12 with said channel means including a surface acoustic wave (SAW) device having an impulse response matched to a chip codeword corresponding to the ith channel
16. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels; a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels; and and a combiner for combining, using the outputs of the plurality of interference cancelers, a plurality of estimates of a particular channel to generate an averaged estimate.', 'a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels;', 'a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels; and and', 'a combiner for combining, using the outputs of the plurality of interference cancelers, a plurality of estimates of a particular channel to generate an averaged estimate.17. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels; a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels; means for combining, using the respective plurality of estimates from said plurality of interference cancelers, a first plurality of estimates for a first channel to generate a first averaged output for channel one, a second plurality of estimates for a second channel to generate a second averaged output for channel two, and an Mth plurality of estimates for an Mth channel to generate an Mth averaged output for channel M; and decision means for processing the first averaged output for channel one, the second averaged output for channel two, and the Mth averaged output for channel M.', 'a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels;', 'a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels;', 'means for combining, using the respective plurality of estimates from said plurality of interference cancelers, a first plurality of estimates for a first channel to generate a first averaged output for channel one, a second plurality of estimates for a second channel to generate a second averaged output for channel two, and an Mth plurality of estimates for an Mth channel to generate an Mth averaged output for channel M; and', 'decision means for processing the first averaged output for channel one, the second averaged output for channel two, and the Mth averaged output for channel M.18. A method for reducing interference in a spread-spectrum code division multiple access (CDMA) receiver having N channels, with each of the N channels identified by a distinct chip-code signal, using a plurality of interference cancelers, each of said plurality of interference cancelers including a plurality of chip-code generators for generating a plurality of chip-code signals and a plurality of timed devices for generating a plurality of timed-chip-code signals, comprising the steps, within each of said plurality of interference cancelers, of:a. despreading, simultaneously, a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals using the plurality of chip-code signals, respectively; b. spread-spectrum processing, simultaneously, using the plurality of timed-chip-code-signals, the plurality of despread signals, respectively, with each of the plurality of timed-chip-code signals corresponding to a respective one of the plurality of despread signals; c. subtracting from the spread-spectrum CDMA signal, each of a plurality of N-1 spread-spectrum-processed-despread signals, with the plurality of N-1 spread-spectrum-processed-despread signals not including a spread-spectrum processed despread signal of an ith despread signal, thereby generating a subtracted signal; d. despreading the subtracted signal with an ith timed chip-code signal as an ith channel signal, producing a first set of estimates of the N channels; e. repeating steps a through d, using a second plurality of interference cancelers, producing a second set of estimates of the N channels; and f. repeating steps a through d, using an Mth plurality of interference cancelers, producing an Mth set of estimates of the N channels.', 'a. despreading, simultaneously, a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals using the plurality of chip-code signals, respectively;', 'b. spread-spectrum processing, simultaneously, using the plurality of timed-chip-code-signals, the plurality of despread signals, respectively, with each of the plurality of timed-chip-code signals corresponding to a respective one of the plurality of despread signals;', 'c. subtracting from the spread-spectrum CDMA signal, each of a plurality of N-1 spread-spectrum-processed-despread signals, with the plurality of N-1 spread-spectrum-processed-despread signals not including a spread-spectrum processed despread signal of an ith despread signal, thereby generating a subtracted signal;', 'd. despreading the subtracted signal with an ith timed chip-code signal as an ith channel signal, producing a first set of estimates of the N channels;', 'e. repeating steps a through d, using a second plurality of interference cancelers, producing a second set of estimates of the N channels; and', 'f. repeating steps a through d, using an Mth plurality of interference cancelers, producing an Mth set of estimates of the N channels.19. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a plurality of interference cancelers, each of said interference cancelers including,a plurality of chip-code-signal generators for generating, simultaneously, a plurality of chip-code signals; a plurality of correlators coupled to said plurality of chip-code generators through a plurality of mixers, each of said plurality of correlators responsive to a distinct chip-code signal of the plurality of chip-code-signals, for simultaneously despreading a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals, respectively; a plurality of delay devices coupled to said plurality of chip-code-signal generators for delaying the plurality of chip-code signals as a timed plurality of chip-code signals, respectively; a plurality of processing mixers coupled to said plurality of delay devices and to said plurality of correlators, responsive to the timed plurality of chip-code signals, for spread-spectrum processing, simultaneously, the plurality of despread signals, respectively, with a timed chip-code-signal corresponding to a respective despread signal, producing N spread-spectrum-processed-despread signals; a plurality of subtractors, each of said plurality of subtractors for subtracting from the spread-spectrum CDMA signal all but a particular one of the N spread-spectrum-processed-despread signals, with the particular one of the N spread-spectrum-processed-despread signals being different for each of said plurality of subtractors, thereby generating a plurality of subtracted signals; and a plurality of channel correlators for despreading the plurality of subtracted signals with a particular one of the plurality of timed chip-code signals, respectively, as a plurality of channel signals.', 'a plurality of interference cancelers, each of said interference cancelers including,a plurality of chip-code-signal generators for generating, simultaneously, a plurality of chip-code signals; a plurality of correlators coupled to said plurality of chip-code generators through a plurality of mixers, each of said plurality of correlators responsive to a distinct chip-code signal of the plurality of chip-code-signals, for simultaneously despreading a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals, respectively; a plurality of delay devices coupled to said plurality of chip-code-signal generators for delaying the plurality of chip-code signals as a timed plurality of chip-code signals, respectively; a plurality of processing mixers coupled to said plurality of delay devices and to said plurality of correlators, responsive to the timed plurality of chip-code signals, for spread-spectrum processing, simultaneously, the plurality of despread signals, respectively, with a timed chip-code-signal corresponding to a respective despread signal, producing N spread-spectrum-processed-despread signals; a plurality of subtractors, each of said plurality of subtractors for subtracting from the spread-spectrum CDMA signal all but a particular one of the N spread-spectrum-processed-despread signals, with the particular one of the N spread-spectrum-processed-despread signals being different for each of said plurality of subtractors, thereby generating a plurality of subtracted signals; and a plurality of channel correlators for despreading the plurality of subtracted signals with a particular one of the plurality of timed chip-code signals, respectively, as a plurality of channel signals.', 'a plurality of chip-code-signal generators for generating, simultaneously, a plurality of chip-code signals;', 'a plurality of correlators coupled to said plurality of chip-code generators through a plurality of mixers, each of said plurality of correlators responsive to a distinct chip-code signal of the plurality of chip-code-signals, for simultaneously despreading a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals, respectively;', 'a plurality of delay devices coupled to said plurality of chip-code-signal generators for delaying the plurality of chip-code signals as a timed plurality of chip-code signals, respectively;', 'a plurality of processing mixers coupled to said plurality of delay devices and to said plurality of correlators, responsive to the timed plurality of chip-code signals, for spread-spectrum processing, simultaneously, the plurality of despread signals, respectively, with a timed chip-code-signal corresponding to a respective despread signal, producing N spread-spectrum-processed-despread signals;', 'a plurality of subtractors, each of said plurality of subtractors for subtracting from the spread-spectrum CDMA signal all but a particular one of the N spread-spectrum-processed-despread signals, with the particular one of the N spread-spectrum-processed-despread signals being different for each of said plurality of subtractors, thereby generating a plurality of subtracted signals; and', 'a plurality of channel correlators for despreading the plurality of subtracted signals with a particular one of the plurality of timed chip-code signals, respectively, as a plurality of channel signals.
20. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels; a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels; and means for combining, using the respective plurality of estimates from said plurality of interference cancelers, a first plurality of estimates for a first channel to generate a first averaged output for channel one, a second plurality of estimates for a second channel to generate a second averaged output for channel two, and an Mth plurality of estimates for an Mth channel to generate an Mth averaged output for channel M.', 'a CDMA/DS detector for detecting and despreading a received spread-spectrum signal having a plurality of channels as a plurality of despread, spread-spectrum channels;', 'a plurality of serially connected interference cancelers each for processing the plurality of despread, spread-spectrum channels and for outputting a respective plurality of estimates of the plurality of channels; and', 'means for combining, using the respective plurality of estimates from said plurality of interference cancelers, a first plurality of estimates for a first channel to generate a first averaged output for channel one, a second plurality of estimates for a second channel to generate a second averaged output for channel two, and an Mth plurality of estimates for an Mth channel to generate an Mth averaged output for channel M.
21. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a plurality of serially connected interference cancelers each for processing a plurality of despread, spread-spectrum channels and for outputting a plurality of estimates of a plurality of spread-spectrum channels corresponding to the plurality of despread, spread-spectrum channels, respectively; means for combining the plurality of estimates to produce a plurality of averaged estimates; and decision means for processing the plurality of averaged estimates.', 'a plurality of serially connected interference cancelers each for processing a plurality of despread, spread-spectrum channels and for outputting a plurality of estimates of a plurality of spread-spectrum channels corresponding to the plurality of despread, spread-spectrum channels, respectively;', 'means for combining the plurality of estimates to produce a plurality of averaged estimates; and', 'decision means for processing the plurality of averaged estimates.
22. A spread-spectrum code division multiple access (CDMA) interference-canceler system for reducing interference in a spread-spectrum CDMA receiver having N channels, with each of the N channels identified by a distinct chip-code signal, comprising:a plurality of serially connected interference cancelers each for processing a plurality of despread, spread-spectrum channels and for outputting a plurality of estimates of a plurality of spread-spectrum channels corresponding to the plurality of despread, spread-spectrum channels, respectively; a plurality of combiners for combining the plurality of estimates to produce a plurality of averaged estimates; and a plurality of decision devices for processing the plurality of averaged estimates.', 'a plurality of serially connected interference cancelers each for processing a plurality of despread, spread-spectrum channels and for outputting a plurality of estimates of a plurality of spread-spectrum channels corresponding to the plurality of despread, spread-spectrum channels, respectively;', 'a plurality of combiners for combining the plurality of estimates to produce a plurality of averaged estimates; and', 'a plurality of decision devices for processing the plurality of averaged estimates.']
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