Patent ID: 7242675
Filing Date: 2007-07-10
Classification: H04B

Abstract:
1. A remote terminal spread-spectrum code division multiple access (CDMA) interference canceller for reducing interference in a received spread-spectrum CDMA signal having N channels, with each of the N channels identified by a distinct chip-code signal, comprising: a plurality of means for generating a plurality of chip-code signals; a plurality of despreading means, with each of said despreading means responsive to the respective distinct chip-code signal identifying a corresponding one of the N channels, for simultaneously despreading a plurality of spread-spectrum channels of a spread-spectrum CDMA signal as a plurality of despread signals, respectively; a plurality of delay means providing proper timing for the plurality of chip-code signals; a plurality of means, responsive to the plurality of delayed chip-code signals, for simultaneously spread-spectrum processing the plurality of despread signals, respectively, with a chip-code-signal corresponding to a respective despread signal; means, for an i channel means for despreading the subtracted signal with the i