ITERATIVE RECEIVER FOR OFDM SYSTEMS BASED ON SEMI-BLIND CHANNEL ESTIMATION

被引：0
|
作者：
Jing Ya Xu Xiaodong Chen Ming Cheng Shixin (National Mobile Communications Research Laboratory
机构：
来源：
Journal of Electronics(China) | 2007年 / 02期
关键词：
Orthogonal Frequency Division Multiplexing (OFDM); Iterative receiver; Channel estimation; Maximum A Posteriori (MAP) probability decoder;
D O I：
暂无
中图分类号：
TN919.72 [无线数据通信];
学科分类号：
0810 ; 081001 ;
摘要：
In this paper we propose two iterative algorithms of joint channel estimation and symbol detection for Orthogonal Frequency Division Multiplexing (OFDM) systems. In which, superimposed pilot scheme is adopted and an initial Channel State Information (CSI) is obtained by employing a first-order statistic. In each subsequent iteration, we propose two algorithms to update the CSI. The Mean Square Error (MSE) of channel estimation and Bit Error Rate (BER) performance are given and simulation results demonstrate that the iterative algorithm using method B has good perform-ance approaching the ideal condition.
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页码：163 / 166
页数：4
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