EM-based multiuser detection and parallel interference cancellation for space-time block coded WCDMA systems employing 16-QAM over multipath fading channels
نویسندگان
چکیده
We consider the design of iterative multiuser detectors based on the Expectation-Maximization (EM) algorithm and Parallel Interference Cancellation (PIC) for spacetime block coded (STBC) WCDMA employing 16-QAM in multipath fading channels. We show that the EM-based and PIC receivers improve the receiver performance particularly when two receive antennas are employed. We see that EM receiver shows better performace than PIC. In fact, the PIC is a special case of our proposed EM-based detector.
منابع مشابه
Space-time block-coded multiple access through frequency-selective fading channels
Mitigation of multipath fading effects and suppression of multiuser interference (MUI) constitute major challenges in the design of wide-band third-generation wireless mobile systems. Space–time (ST) coding offers an effective transmit-antenna diversity technique to combat fading, but most existing ST coding schemes assume flat fading channels that may not be valid for wide-band communications....
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