US2003002463A1

3G

Title

Method employed by a remote terminal for spread spectrum CDMA substractive interference cancellation

Application Number:

US20020202129

Publication Date:

02-01-2003

Family ID:

Application Date:

24-07-2002

Publication Country:

US

Priority Date:

22-04-1993

Declaring Company:

Abstract  Abstract

A spread-spectrum code division multiple access interference cancellation method employed by a remote terminal reduces interference in a direct sequence CDMA receiver having N chip-code channels. The interference canceller despreads the spread-spectrum CDMA signal as a plurality of despread signals respectively. A timed version of the plurality of chip-code signals spread-spectrum processes the plurality of despread signals respectively with a chip-code-signal corresponding to a respective despread signal. For recovering a code channel using an i th chip-code-signal subtracting circuits subtract from the spread-spectrum CDMA signal each of the N-1 spread-spectrum-processed-despread signals thereby generating a subtracted signal. The N-1 spread-spectrum-processed-despread signals do not include the spread-spectrum-processed-despread signal of the i th channel of the spread-spectrum CDMA signal. The channel correlator or channel-matched filter 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.