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作者机构:Texas A&M Univ Dept Elect Engn College Stn TX 77843 USA
出 版 物:《IEEE COMMUNICATIONS LETTERS》 (IEEE Commun Lett)
年 卷 期:2001年第5卷第4期
页 面:145-147页
核心收录:
学科分类:0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学]
基 金:Texas Telecommunications Engineering Consortium
主 题:channel estimation data detection iterative decoding MMSE filtering turbo coding
摘 要:In this letter, we introduce an iterative joint channel and data estimation receiver that exploits both the power of pilot-symbol assisted modulation (PSAM) and turbo coding for fading channels. The key innovation is a low-complexity soft channel estimator which divides a processing block into overlapped cells and performs maximum a posteriori (MAP) sequence estimation and MMSE filtering based on the received signal and extrinsic information delivered by the soft channel decoder. Simulation results show that for turbo-coded PSAM systems under time-variant fading the proposed receiver offers significant performance gains over a noniterative receiver and two other cancellation schemes.