CA2342454C

3G

Title

SPREAD SPECTRUM INTERFERENCE CANCELER SYSTEM AND METHOD

Application Number:

CA19952342454

Publication Date:

03-09-2002

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:

CA19952342454

Family ID:

Publication Country:

US

Publication Date:

03-09-2002

Application Date:

05-07-1995

Priority Date:

26-07-1994

Current Assignee:

Declaring Company:

Abstract  Abstract

A spread-spectrum CDMA interference canceler for reducing interferencein a DS/CDMA receiver having N chip-code channels. The interference cancelerincludes a plurality of correlators a plurality of spread-spectrum-processingcircuits subtracting circuits and channel correlators. Using a plurality of chipcode signals generated from chip codeword signal generators the correlatorsdespreads the spread-spectrum CDMA signal as a plurality of despread signals.The plurality of spread-spectrum-processing circuits uses a timed version of theplurality of chip-code signals generated from the delay devices for spreadspectrum processing the plurality of despread signals. For recovering a codechannel using an i th chip-code-signal the subtracting circuits subtracts from thespread-spectrum CDMA signal each of the N-1 spread-spectrum-processeddespread signals thereby generating a subtracted signal. The channelcorrelator 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.