通信学报Issue(1)：47-53,61,8.DOI:10.3969/j.issn.1000-436x.2014.01.006
基于Turbo均衡和信道估计的单通道盲信号恢复算法
Blind data recovery of single-channel mixed signals based on Turbo equalization and channel estimation
张冬玲 1杨勇 1李静 1葛临东1
作者信息
- 1. 解放军信息工程大学 信息系统工程学院，河南 郑州 450002
- 折叠
摘要
Abstract
The timing synchronization is the key technique of the single-channel blind signal receiver. The single-channel blind recovery algorithm based on Turbo equalization was proposed, which does not require the timing synchronization. In the algorithm, the timing offset is taken as inter-symbol interference channel, which can improve the restorability of source signals by the feedback soft information between channel estimation and the turbo equalization. The primary works include the research on initial blind equalization algorithm, the channel estimation algorithm, MMSE equalization algorithm for the mixed signals and the soft information interaction among those three algorithms. The proposed algo-rithm has low computational complexity and small computational load, which can be applied to high-order modulated signals. Simulation results show that, good performance could be achieved for BPSK, QPSK and 8PSK modulated sig-nals. In addition, the proposed algorithm is suitable for both equal power and unequal power signals.关键词
盲分离/单通道/成对载波多址/Turbo均衡/递归最小二乘信道估计Key words
blind separation/single-channel/paired carrier multiple access/Turbo equalization/recursive least square channel estimation分类
信息技术与安全科学引用本文复制引用
张冬玲,杨勇,李静,葛临东..基于Turbo均衡和信道估计的单通道盲信号恢复算法[J].通信学报,2014,(1):47-53,61,8.
