CN1097368C

3G

Title

SPREAD SPECTRUM INTERFERENCE CANCELER SYSTEM AND METHOD

Application Number:

CN1995194367

Publication Date:

25-12-2002

Current Assignee:

Family ID:

Application Date:

05-07-1995

Declaring Company:

Publication Country:

US

Priority Date:

26-07-1994

Title

SPREAD SPECTRUM INTERFERENCE CANCELER SYSTEM AND METHOD

Application Number:

CN1995194367

Family ID:

Publication Country:

US

Publication Date:

25-12-2002

Application Date:

05-07-1995

Priority Date:

26-07-1994

Current Assignee:

Declaring Company:

Abstract  Abstract

A spreading code used in the spread spectrum receiver having N channel for reducing interference division multiple access (CDMA) interference canceller. The interference canceler includes a plurality of correlators (54 64 74) a plurality of spread-spectrum-processing circuits (55 65 75) a subtraction circuit (150) and channel correlators (146). using a plurality of chip-code signal from the code signal generator (52 62 72) generated by the correlators (54 64 74) de-spreading the spread spectrum CDMA signal into a plurality of despread signals. performing the spectrum spreading process to the plurality of de-spread signal using a timed version of the plurality of chip signal generated from the delay device (53 55 65) of the plurality of spread-spectrum-processing circuits (75 63 73). For recovering a code channel using the ith chip code signal a subtraction circuit (150) is subtracted from the spread-spectrum CDMA signal each of a N-1 de-spread signal thereby generating a subtracted signal. channel correlator (146) for despreading the subtracted signal.

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.

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 i<th> 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.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

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.