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T/4相干累积分数间隔多模盲均衡算法
引用本文:韩迎鸽,龚秀丽,郭业才.T/4相干累积分数间隔多模盲均衡算法[J].计算机工程与应用,2012,48(32):113-116.
作者姓名:韩迎鸽  龚秀丽  郭业才
作者单位:1.安徽理工大学 电气工程系,安徽 淮南 232001 2.南京信息工程大学,南京 210044
基金项目:全国博士学位论文作者专项资金资助项目(No.200753);安徽省教育厅高校省级自然科学一般研究项目(No.KJ20112092):安徽省教育厅高校省级自然科学研究基金重点资助项目(No.KJ2010A096);安徽省高等学校省级优秀青年人才基金重点资助项目(No.2010SQRL047ZD).
摘    要:针对高阶QAM信号均衡普遍存在收敛困难、收敛后稳态误差大的问题。在对分数间隔结构、多模和相干累积算法分析的基础上,提出了一种基于相干累积的分数间隔多模盲均衡算法。水声信道128QAM信号仿真结果表明,该算法具有更快的收敛速度、更小的稳态误差,眼图睁开更加清晰。

关 键 词:盲均衡  分数间隔均衡器  相干累积  多模  收敛速度  稳态误差  

T/4 coherent integration fractionally spaced multi-modulus blindequalization algorithm
HAN Yingge , GONG Xiuli , GUO Yecai.T/4 coherent integration fractionally spaced multi-modulus blindequalization algorithm[J].Computer Engineering and Applications,2012,48(32):113-116.
Authors:HAN Yingge  GONG Xiuli  GUO Yecai
Affiliation:1.Department of Electrical Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, China 2.Nanjing University of Information Science & Technology, Nanjing 210044, China
Abstract:Aiming at the problem of convergence difficulty and the big residue Mean Square Error (MSE) existed in high-order QAM signal equalization, this paper proposes the Coherent Integration based T/4 Fractionally Spaced Multi-Modulus blind equalization Algorithm (CIFSMMA) on the basis of analyzing the Multi-Modulus blind equalization Algorithm (MMA), T/4 Fractionally Spaced Multi-Modulus blind equalization Algorithm (FSMMA) and coherent integration algorithm. The underwater acoustic channel simulation results with 128QAM signal show that the con- vergence speed of the proposed algorithm is faster, the steady-state error is smaller and the eye pattern is more clear.
Keywords:blind equalization  fractionally spaced equalizer  coherent integration  multi-modulus  convergencespeed  steady-state error
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