WCDMA盲多用户检测算法在多径信道下的分析

Blind Multi-user Detection for WCDMA in Multipath Channels

建立了WCDMA系统中多用户在多径条件下的干扰场景模型。介绍了盲多用户检测原理。在该干扰场景中分别使用LMS、RLS和Kalman三种盲多用户检测器进行检测,在AWGN和3km/h慢时变的瑞利多径的信道条件下对检测算法的收敛特性和系统性能进行了分析。在多径条件下的Kalman和RLS盲多用户检测器收敛特性与高斯加性噪声情况下一致,但抗干扰性能会下降约8dB。

In this paper,the blind multi-user detectiors are classified and described.LMS,RLS and Kalman methods are used for multi-user detection in WCDMA system.The blind multi-user detectors are applied in Multi-path channel and AWGN environment.The convergence and complexity of 3 blind detectors are analysed.The performance of Kalman and RLS detectors loss 8 dB for Multi-path environment while the convergence are the same.The performance and convergence of LMS blind detector are not influenced in Multi-path environment.