Multiuser detectors with decision feedback for asynchronous spread-spectrum multiple access in multipath fading channels

This paper extends earlier work of the authors to the multipath fading channel. For a normalized Doppler spread of f/sub D/T=0.005 we show that a reduced state sequence estimation reduced-complexity receiver with K/sub s/=2 users per state and a processing gain of N/sub s/=127 performs only 0.5 dB worse than the single-user receiver for a bit-error rate of 10/sup -4/.