Jimmy Tran

US Patent:

6349110, Feb 19, 2002

Filed:

Apr 22, 1999

Appl. No.:

09/296508

Inventors:

Sorin Davidovici - Jackson Heights NY
Jimmy Cuong Tran - Jackson NJ
Donald L. Schilling - Sands Point NY

Assignee:

Golden Bridge Technology, Inc. - West Long Branch NJ

International Classification:

H04B 1500

US Classification:

375207, 375206

Abstract:

A subsystem and method for combining a spread-spectrum signal arriving from a plurality of paths. A header-matched filter detects each match of a header-chip-sequence signal with a first impulse response and, in response to the detection, outputs a header-detection signal having a header amplitude and a respective chip location. A data-matched filter detects, at the respective chip location of each header-detection signal, a respective data-chip-sequence signal and outputs a data-detection signal having a data amplitude. A combiner multiplies the header amplitude of each header-detection signal and the data amplitude of the respective data symbol to generate a plurality of weighted elements for each data symbol. The combiner then adds the plurality of weighted elements for each data symbol as a sum signal of the respective data symbol.

US Patent:

59563699, Sep 21, 1999

Filed:

Feb 24, 1997

Appl. No.:

8/806013

Inventors:

Sorin Davidovici - Jackson Heights NY
Jimmy Cuong Tran - Jackson NJ
Donald L. Schilling - Sands Point NY

Assignee:

Golden Bridge Technology, Inc. - West Long Branch NJ

International Classification:

H04B 1500
H04K 100
H04L 2730

US Classification:

375207

Abstract:

A multipath-combining subsystem for receiving a spread-spectrum signal arriving from a plurality of paths. A header-matched filter detects each match, within each path, of a header-chip-sequence signal with a first impulse response and outputs a header-detection signal having a header amplitude and a respective chip location. A data-matched filter detects at the respective chip location of each header-detection signal, a respective data-chip-sequence signal and outputs a data-detection signal having a data amplitude. A combiner multiplies the header amplitude of each header-detection signal and the data amplitude of the respective data symbol to generate a plurality of weighted elements for each data symbol. The combiner then adds the plurality of weighted elements for each data symbol as a sum signal of the respective data symbol.