Iterative channel estimation for turbo codes over fading channels

被引：6
|
作者：
Valenti, MC [1 ]
机构：
[1] W Virginia Univ, Dept Comp Sci & Elect Engn, Morgantown, WV 26506 USA
来源：
WCNC: 2000 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-3 | 2000年
关键词：
D O I：
10.1109/WCNC.2000.904767
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A method for coherently detecting and decoding turbo coded BPSK signals transmitted over frequency-flat fading channels is discussed. Estimates of the complex channel gain and variance of the additive noise are derived first from known pilot symbols and an estimation Alter. After each iteration of turbo decoding, the channel estimates are refined using information fed back from the decoder. Both hard-decision and soft-decision feedback are considered, and simulation results compare the proposed technique with DPSK, ideal BPSK, and non-iterative PSAM based reception.
引用
收藏
页码：1019 / 1024
页数：6
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