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An Approach to Minimize the Impact of Residual MAI in MMSE Multiuser Detector
並列摘要
Capacity of CDMA system is interference limited. Multiuser detection is one of the methods used to enhance the capacity of CDMA system. In this paper, an improved MMSE based multiuser detector is proposed. The conventional detector is optimized to combat the Additive White Guassian Noise (AWGN), while MM SE detector has the lowest Bit Error Rate (BER) among suboptimum linear detectors. The proposed detector uses the conventional detector output in arriving at its decision; therefore a substantial improvement could be expected. For a synchronous CDMA system, our simulation results show a significant improvement in BER over MMSE detector.
延伸閱讀
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