An iterative receiver for turbo-coded pilot-assisted modulation in fading channels

作     者：Li, QH Georghiades, CN Wang, XD 

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.