A Low Complexity Space-Time Equalizer Based on Tap-Mobile for the Diversity System
A novel space-time tap-mobile equalizer is proposed as a low complexity solution for diversity receiver operating in wireless frequency selective channels with sparse power profiles.Generally the conventional equalizer requires a large number of filter taps to overcome long delay profiles of the channel multi-paths.However,with the efficient algorithm of channel estimation,time delay and amplitude of all the multipaths have been known so that the new equalizer just only maintains a small subset of nonzero working taps.As a result,it not only eliminates the noise accumulation effects of the idle taps but also reduces hardware implementation complexity effectively.Moreover this papers method provides the real-time tracing of variable nonzero tapsposition fast and flexibly.Simulation results show that this tap-mobile DFE exhibits considerable computational savings and more stable performance than the conventional ones.It is quite fit for applications in high-speed systems,such as high definition television (HDTV) and broadband mobile communication.
Space-time equalizer DFE diversity receiver
Xiuping Wang Anding Wang Yuyang Qiu Bin Dong
College of Information and Electronics,Zhejiang Gongshang University Hangzhou,China College of Statistics and Mathematics,Zhejiang Gongshang University Hangzhou,China Nokia Hangzhou Research & Development Center,China
国际会议
9th International Conference on Signal Processing(第九届国际信号处理学术会议)(ICSP08)
北京
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）