| MPSK调制系统中的自适应信道估计 |
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| 引用本文： | 黎海涛,张靖. MPSK调制系统中的自适应信道估计[J]. 信号处理, 2003, 19(1): 75-77 |
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| 作者姓名： | 黎海涛 张靖 |
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| 作者单位： | 1. 清华大学电子工程系,北京,100084
2. 电子科技大学电子工程学院,成都,610054 |
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| 摘 要： | 本文研究了在MPSK调制方式下,不发送训练序列的商接判决自适应信道估计问题。为提高信道估计性能,提出采用软判决鉴相估值来调整加权最小均方(WLMS)和加权递归最小二乘(WRLS)自适应算法中的权值来进行信道估计,并研究了改进的软判决WRLS算法。结果表明,软判决加权LMS算法比一般LMS性能有很大提高,改进的软判决WRLS算法估计性能优于WRLS算法。
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| 关 键 词： | 信道估计 自适应滤波 软判决 |
| 修稿时间： | 2002-05-20 |
Adaptive Channel Estimation for MPSK Modulation System |
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| Li Haitao Zhang Jing. Adaptive Channel Estimation for MPSK Modulation System[J]. Signal Processing(China), 2003, 19(1): 75-77 |
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| Authors: | Li Haitao Zhang Jing |
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| Abstract: | This paper studies on the adaptive estimation the impulse response of channel without the aid of a training symbol. Results of receiver soft decision are used to weight the LMS and RLS estimators to increase their robustness to hard decision errors and channel noise. Simulation results show that the soft decision weighted LMS has significant advantages over ordinary LMS. The modified soft decision weighted RLS has better performance than the RLS and weighted RLS algorithms |
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| Keywords: | channel estimation adaptive filter soft decision |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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