放大转发协作分布式STBC-SC-FDE系统的频率域信道估计与均衡

doi:10.3969/j.issn.1000-436x.2013.03.012

摘要/Abstract

摘要：

针对单中继放大转发协作D-STBC-SC-FDE系统，研究了频率选择性衰落信道的频率域估计与均衡，给出了一种基于训练的最小二乘信道估计算法。该算法在Chu序列的辅助下，可在目的端同时估计直接信道S→D和级联信道S→R→D，算法可达最小均方误差。Monte Carlo仿真验证了算法的正确性，仿真结果也表明，信道的估计与均衡性能很大程度上受信道可用发送功率分配方案的影响。

关键词: 信道估计, 信道均衡, 分布式STBC, SC-FDE, 放大转发

Abstract:

Frequency domain channel estimation and equalization w ied for D-STBC-SC-FDE systems with ampl-ify-and-forward relaying over frequency-selective fading channels, and a training-based least-squares channel estima-tion algorithm was proposed. The proposed algorithm ca estimate simultaneously both the direct channel S? D and the cascaded channel S? R? D at destination terminal assisted by Chu sequences, and can achieve the minimum mean square error. Monte Carlo simulation results confirm the proposed gorithm is correct and the available channel transmitting power allocation strategy affects the performance of channel estimation and equalization to a certain ex-tent.

Key words: channel estimation, channel equalization, distributed STBC, SC-FDE, amplify-and-forward

王永川,陈自力. 放大转发协作分布式STBC-SC-FDE系统的频率域信道估计与均衡[J]. 通信学报, 2013, 34(3): 99-104.

Yong-chuan WANG,Zi-li CHEN. Frequency domain channel estimation and equalization for distri-buted STBC-SC-FDE systems with amplify-and-forward relaying[J]. Journal on Communications, 2013, 34(3): 99-104.

图/表 5

参考文献 10

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