Spread spectrum interference canceller system - uses N channels spread spectrum processed by chip code signals and partial cancelling N-1 interfering channels

摘要

The canceller includes correlators (54,64,74), spread spectrum processors (55,65,75), subtracting circuits (150) and channel correlators (146). Using chip-code signals generated from chip codeword signal generators (52,62,72), the correlators (54,64,74) despread the spread spectrum signal. - The spread spectrum processors (55,65,75) use a timed version of the chip-code signals generated for spread spectrum processing the despread signals. The subtracting circuits (150) subtract from the spread spectrum signal, each of the N-1 spread spectrum despread signals generating a subtracted signal for recovering a code channel using an ith chip-code signal. The channel-correlator (146) despreads the subtracted signal.