| 一种基于分数采样的混合盲均衡算法仿真研究 |
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| 引用本文： | 孙丽君,孙超.一种基于分数采样的混合盲均衡算法仿真研究[J].系统仿真学报,2006,18(2):431-433. |
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| 作者姓名： | 孙丽君 孙超 |
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| 作者单位： | 1. 河南工业大学,信息科学与工程学院,河南,郑州,450052;西北工业大学,声学工程研究所,陕西,西安,710072
2. 西北工业大学,声学工程研究所,陕西,西安,710072 |
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| 基金项目： | 河南省自然科学基金;河南省教育厅自然科学基金;河南工业大学校科研和教改项目 |
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| 摘 要： | 在数字通信中,盲均衡是克服多径衰落信道导致的码间干扰的一种有效方法。超指数盲均衡算法的迭代算法收敛速度快,且便于跟踪时变信道。同时由于实际信道往往为非最小相位系统,此时线性均衡器性能不佳。因此针对严重频率衰落和非线性相位失真信道,提出了一种分数采样的混合盲均衡算法,并获得了较快的收敛速度和较小的剩余均方误差。仿真结果证明了该算法的有效性。
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| 关 键 词： | 数字通信 盲均衡 超指数迭代 波特间隔 分数间隔 判决反馈 |
| 文章编号： | 1004-731X（2006）02-0431-03 |
| 收稿时间： | 2004-12-01 |
| 修稿时间： | 2005-05-15 |
A Kind of Novel Blind Equalization Algorithm Based on Fractional Sampling Method |
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| SUN Li-jun,SUN Chao.A Kind of Novel Blind Equalization Algorithm Based on Fractional Sampling Method[J].Journal of System Simulation,2006,18(2):431-433. |
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| Authors: | SUN Li-jun SUN Chao |
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| Abstract: | Blind equalization is an effective way to suppress the inter-symbol interference(ISI),which is caused by multipath fading communication channels.The super-exponential iteration(SEI) blind equalization algorithm has the advantage of good tracking capability of the time varying channel.However real channels are generally non-minimum phase systems,baud-spaced equalizers exhibit poor performance under this circumstance.Based on fractional sampling method,a new super-exponential iteration decision feedback blind equalization algorithm for severely nonlinear phase distortion channels was proposed.The simulation results show that the proposed algorithm with faster convergence rate acquires an improvement of about 7dB reduction in residual MSE as comparing with the MSE obtainable with the baud-spaced one. |
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| Keywords: | digital communication blind equalization super-exponential iteration baud-spaced fractionally-spaced decision feedback |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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