| 基于小波网络的MQAM数字通信自适应均衡器 |
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| 引用本文： | 章国安,张小东,毕光国.基于小波网络的MQAM数字通信自适应均衡器[J].应用科学学报,2001,19(1):5-9. |
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| 作者姓名： | 章国安 张小东 毕光国 |
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| 作者单位： | 1. 东南大学无线电工程系, 江苏南京 210096;2. 南通工学院信息工程系;江苏南通 226007 |
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| 基金项目： | 国家自然科学基金资助项目(69772024) |
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| 摘 要： | 首先给出了多维小波网络的结构及其随机梯度学习算法,提出了基于小波网络的MQAM数字通信自适应均衡器.仿真结果表明:该均衡器对于MQAM数字信号非线性信道的均衡,其性能明显优于传统的基于LMS和RLS算法的线性均衡器和基于RLS算法的判决反馈均衡器,且性能稍好于基于BP网络的均衡器.
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| 关 键 词： | 多进制正交幅度调制 自适应均衡器 非线性信道均衡 小波网络 |
| 文章编号： | 0255-8297(2001)01-0005-05 |
| 收稿时间： | 1999-10-05 |
| 修稿时间： | 1999年10月5日 |
MQAM Digital Communication Adaptive Equalizers Using Wavelet Networks |
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| ZHANG Guo an ,ZHANG Xiao dong ,BI Guang guo.MQAM Digital Communication Adaptive Equalizers Using Wavelet Networks[J].Journal of Applied Sciences,2001,19(1):5-9. |
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| Authors: | ZHANG Guo an ZHANG Xiao dong BI Guang guo |
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| Institution: | 1. Department of Radio Engineering, Southeast University, Nanjing 210096, China;2. Department of Information Engineering, Nantong Institute of Technology, Nantong 226007, China |
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| Abstract: | In this paper, a novel wavelet network based adaptive equalizer (WNBAE) is presented. The structure and stochastic gradient learning algorithm of the WNBAE is given. In the MQAM digital communication reception systems over nonlinear channels the proposed WNBAE has better performance than that of the conventional linear transversal equalizer based on the LMS or the RLS algorithms, as well as that of the decision feedback equalizer based on the RLS algorithm. It outperforms slightly the backpropagation network based adaptive equalizer. Several simulations are performed to evaluate the behavior of the WNBAE. |
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| Keywords: | wavelet network MQAM adaptive equalizer non-linear channel equalization |
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