Patent Document ID: 5553062
Application ID: 08279477
Patent Status: 1

Claim One:
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 plurality of interference cancelers including, means for generating a plurality of chip-code signals; means for despreading, using the plurality of chip-code signals, a spread-spectrum CDMA signal as a plurality of despread signals, respectively; means for timing the plurality of chip-code signals to generate a plurality of timed chip-code signals; means, responsive to the plurality of timed chip-code-signals, for spread-spectrum processing the plurality of despread signals with the plurality of timed chip-code-signals, respectively; means, for an i.sup.th chip-code signal, for subtracting from the spread-spectrum CDMA signal each of an N-1 plurality of spread-spectrum processed despread signals, with the N-1 plurality of spread-spectrum processed despread signals not including the i.sup.th spread-spectrum processed despread signal of an i.sup.th despread signal, thereby generating a subtracted signal; and channel means for despreading the subtracted signal with the i.sup.th timed chip-code signal as an i.sup.th channel signal.