Abstract
A spread-spectrum CDMA interference canceler for reducing interference in a DS/CDMA receiver having N chip-code channels. The interference canceler includes a plurality of correlators (54 64 74) a plurality of spread- spectrum-processing circuits (55 65 75) subtracting circuits (150) and channel correlators (146). Using a plurality of chip-code signals generated from chip codeword signal generators (52 62 72) the correlators (54 64 74) despreads the spread-spectrum CDMA signal as a plurality of despread signals. The plurality of spread-spectrum- processing circuits (55 65 75) uses a timed version of the plurality of chip-code signals generated from the delay devices (53 63 73) for spread-spectrum processing the plurality of despread signals. For recovering a code channel using an ith chip-code-signal the subtracting circuits (150) subtracts from the spread-spectrum CDMA signal each of the N-1 spread-spectrum-processed-despread signals thereby generating a subtracted signal. The channel-correlator (146) despreads the subtracted signal.
| 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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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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| WO9603819A1 | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
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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 | ||||
| US5553062A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
Yes | Basis Patent | |||
| US5553062A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
No | Family Member | |||
| US5553062A | 3G | 07/04/2004 | ISLD-200407-004 | INTERDIGITAL INC | No | Family Member | ||||
| US5553062A | 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 | ||||
| CN1154770A | Not Available | 09/04/2001 | ISLD-200105-001 | INTERDIGITAL INC |
S1
|
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 interference cancelers including, a plurality of means for generating a plurality of chip-code signals; a plurality of despreading means, with each of said plurality of despreading means responsive to the respective distinct chip-code signal identifying a corresponding one of the N channels, for despreading a spread-spectrum CDMA signal as a plurality of despread signals; respectively a plurality of means for timing the plurality of chip-code signals thereby generating a timed version of the plurality of chip-code signals; a plurality of means, responsive to the timed version of the plurality of chip-code-signals, for spread- spectrum processing the plurality of despread signals, respectively, with a chip-code-signal corresponding to a respective despread signal; means, for an ith chip-code signal, for subtracting from the spread-spectrum CDMA signal each of an N-l plurality of despread signals, with the N-l plurality of despread signals not including a despread signal of an ith despread signal, thereby generating a subtracted signal; and channel means for despreading the subtracted signal with the ith chip-code signal as an ith channel signal; and means, coupled to each of said plurality of interference cancelers, for combining the ith channel signal output from each of a plurality of channel means, respectively.
2. The spread-spectrum CDMA interference canceler as set forth in claim 1 wherein each of said plurality of despreading means includes: 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 as set forth in claim 1 wherein each of said plurality of despreading means includes a matched filter having an impulse response matched to a respective chip codeword.
4. The spread-spectrum CDMA interference canceler as set forth in claim 1 wherein said channel-despreading means includes: 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.
5. The spread-spectrum CDMA interference canceler as set forth in claim 2 wherein said channel-despreading means includes: 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 as set forth in claim 3 wherein said channel-despreading means includes: 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.
7. The spread-spectrum CDMA interference canceler as set forth in claim 3 wherein said channel-despreading means includes a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel.
8. The spread-spectrum CDMA interference canceler as set forth in claim 1 wherein each of said plurality of despreading means includes 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 as set forth in claim 8 wherein said channel-despreading means includes a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
10. The spread-spectrum CDMA interference canceler as set forth in claim 1 wherein said channel-despreading means includes a digital signal processor with digital matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
11. The spread-spectrum CDMA interference canceler as set forth in claim 8 wherein said channel-despreading means includes a surface acoustic wave (SAW) device having an impulse response matched to a chip codeword corresponding to the ith channel
12. The spread-spectrum CDMA interference canceler as set forth in claim 1 wherein each of said plurality of despreading means includes 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 as set forth in claim 12 wherein said channel-despreading means includes a matched filter having an impulse response matched to a chip codeword corresponding to the ith channel
14. The spread-spectrum CDMA interference canceler as set forth in claim 12 wherein said channel-despreading means includes 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 as set forth in claim 12 wherein said channel-despreading means includes 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 plurality of interference cancelers, each of said interference cancelers including, a plurality of chip-code-signal generators for generating a plurality of distinct chip-code signals; a plurality of correlators, responsive to the plurality of distinct chip-code-signals, respectively, for despreading a spread-spectrum CDMA signal as a plurality of despread signals; a plurality of delay devices coupled to said plurality of chip-code-signal generators for delaying the plurality of distinct chip-code signals as a timed plurality of chip-code signals, respectively; a plurality of mixers, responsive to the timed plurality of chip-code signals, for spread-spectrum processing the plurality of despread signals, respectively, with a chip-code-signal corresponding to a respective despread signal; a subtractor, for an ith chip-code signal, for subtracting from the spread-spectrum CDMA signal, each of a plurality of N-l spread-spectrum-processed-despread signals, with the plurality of N-l spread-spectrum- processed-despread signals not including a spread-spectrum processed-despread signal of an ih despread signal, thereby generating a subtracted signal; a channel correlator for despreading the subtracted signal with the ith chip-code signal as an ith channel signal; and a combiner for combining the ith channel signal output from each of a plurality of channel correlators, 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 plurality of interference cancelers, each of said interference cancelers including, a plurality of matched filters, responsive to a plurality of distinct chip-code signals, respectively, for despreading a spread-spectrum CDMA signal as a plurality of despread signals; a plurality of chip-code-signal generators, responsive to the plurality of despread signals from the plurality of matched filters, respectively, for generating a timed plurality of chip-code signals; a plurality of mixers, responsive to the plurality of despread signals from the plurality of matched filters and the timed plurality of chip-code signals from the plurality of chip-code-signal generators, respectively, for spread-spectrum processing the plurality of despread signals, respectively, with a timed chip-code signal corresponding to a respective despread signal; a subtractor, for an ith chip-code signal, for subtracting from the spread-spectrum CDMA signal, each of a plurality of N-l spread-spectrum-processed-despread signals, with the plurality of N-l spread-spectrum- processed-despread signals not including a spread-spectrum processed-despread signal of an ith despread signal, thereby generating a subtracted signal; a channel matched filter for despreading the subtracted signal with the ith chip-code-signal as an ith channel signal; and means for combining the ith channel signal output from each of a plurality of channel matched filters.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 first plurality of interference cancelers, 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, respectively; b. spread-spectrum processing, simultaneously, using a timed version of a plurality of chip-code-signals, the plurality of despread signals, respectively, with a chip-code signal corresponding to a respective despread signal; c. subtracting from the spread-spectrum CDMA signal, each of a plurality of N-l spread-spectrum- processed-despread signals, with the plurality of N-l 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 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; f. repeating steps a through d, using an Mth plurality of interference cancelers, producing an Mth set of estimates of the N channels; and g. combining each estimate of the Mth set of estimates.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, responsive to a plurality of distinct 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 mixers, responsive to the timed plurality of chip-code signals, for spread-spectrum processing, simultaneously, the plurality of despread signals, respectively, with a 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; a plurality of channel correlators for despreading the plurality of subtracted signals with a particular one of the plurality of chip-code signals, respectively, as a plurality of channel signals; and means for combining each channel signal from an interference canceler, respectively.
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 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, responsive to a plurality of distinct 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 mixers, responsive to the timed plurality of chip-code signals, for spread-spectrum processing, simultaneously, the plurality of despread signals, respectively, with a chip-code-signal corresponding to a respective despread signal, producing N spread- spectrum-processed-despread signals; a first subtractor, for subtracting from the spread-spectrum CDMA signal, all but a first one of the N spread-spectrum-processed-despread signals, thereby generating a first subtracted signal; a second subtractor, for subtracting from the spread-spectrum CDMA signal, all but a second one of the N spread-spectrum-processed-despread signals, thereby generating a second subtracted signal; and an nth subtractor, for subtracting from the spread-spectrum CDMA signal, all but an nth one of the N spread-spectrum-processed-despread signals, thereby generating an nth subtracted signal; a first channel correlator for despreading the first subtracted signal with a first chip-code signal as an estimate of a first channel; a second channel correlator for despreading the second subtracted signal with a second chip-code signal as an estimate of a second channel; an nth channel correlator for despreading the nth subtracted signal with an nth chip-code signal as an estimate of an nth channel signal; and means for combining the estimates of the nth channel from said plurality of interference cancelers.
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 interference cancelers, each of said interference cancelers including, a plurality of matched filters, responsive to a plurality of distinct chip-code-signals, for despreading, simultaneously, a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals, respectively; a plurality of chip-code-signal generators, responsive to the plurality of despread signals from the plurality of matched filters, for generating, simultaneously, a timed plurality of chip-code signals, respectively; a plurality of mixers, responsive to the plurality of despread signals from the plurality of matched filters and the timed plurality of chip-code signals from the plurality of chip-code-signal generators, respectively, 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; a plurality of channel-matched filters for despreading the plurality of subtracted signals with a particular one of the plurality of distinct chip-code signals, respectively, as a plurality of channels; and means for combining a respective channel from the plurality of interference cancelers to produce an averaged estimate.
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 interference cancelers, each of said interference cancelers including, a plurality of matched filters, responsive to a plurality of distinct 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 chip-code-signal generators, responsive to the plurality of despread signals from the plurality of matched filters, for generating, simultaneously, a timed plurality of chip-code signals, respectively; a plurality of mixers, responsive to the plurality of despread signals from the plurality of matched filters and the timed plurality of chip-code signals from the plurality of chip-code-signal generators, respectively, 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 first subtractor, for subtracting from the spread-spectrum CDMA signal, all but a first one of the N spread-spectru -processed-despread signals, thereby generating a first subtracted signal; a second subtractor, for subtracting from the spread-spectrum CDMA signal, all but a second one of the N spread-spectrum-processed-despread signals, thereby generating a second subtracted signal; and an nh subtractor, for subtracting from the spread-spectrum CDMA signal, all but an nth one of the N spread-spectrum-processed-despread signals, thereby generating an nth subtracted signal; a first channel-matched filter for despreading the first subtracted signal with a first chip- code signal as an estimate of a first channel; a second channel-matched filter for despreading the second subtracted signal with a second chip- code signal as an estimate of a second channel; an nth channel-matched filter for despreading the nth subtracted signal with an nth chip-code signal as an estimate of an nth channel; and means for combining a plurality of estimates of the nth channel from said plurality of interference cancelers.']
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.