One-shot near-far resistant CDMA detection in multipath fading channels-an O/sup 3/BPSK based system
Fu‐Chun Zheng, Stephen K. Barton · 2002
This paper applies O/sup 3/BPSK (orthogonal on-off PSK) signaling scheme to multipath fading CDMA channels, for the purpose of near-far resistant detection in the reverse link. Based on the maximum multipath spreading delay, a minimum duration of "off" is suggested, with which the temporally adjacent bits (TABs) from different users at the receiver are decoupled. As a result, a Rake-type one-shot linear decorrelating detector (LDD) is obtained. Since no knowledge of echo amplitudes is needed, a blind detection can be realised.