| 基于混沌的通信系统的盲信道均衡 |
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| 引用本文： | 王世元,冯久超.基于混沌的通信系统的盲信道均衡[J].西南师范大学学报(自然科学版),2004,29(3):373-378. |
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| 作者姓名： | 王世元 冯久超 |
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| 作者单位： | 西南师范大学,电子与信息工程学院,重庆,400715 |
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| 基金项目： | 教育部回国留学人员科研专项资助(130501)，西南师范大学博士基金(220-413604). |
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| 摘 要： | 研究了基于混沌的通信系统的盲均衡问题.其出发点是利用基于无先导变换,并组合信号建模技术,进而提出一种盲均衡算法.仿真结果表明,这种盲均衡算法能有效地抑制各种信道畸变和噪声.与基于扩展卡尔曼滤波器的盲均衡算法相比,在低信噪比的情况下,前者有较快的收敛速度,并具有较好的均衡实现.
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| 关 键 词： | 混沌 通信 衰落信道 盲均衡 卡尔曼滤波器 无先导变换 自回归模型 |
| 文章编号： | 1000-5471(2004)03-0373-06 |
| 修稿时间： | 2003年11月20 |
Blind Channel Equalization for Chaos-Based Communication Systems |
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| WANG Shi-yuan,FENG Jiu-chaoSchool of Electronic and Information Engineering,Southwest China Normal University,Chongqing ,China.Blind Channel Equalization for Chaos-Based Communication Systems[J].Journal of Southwest China Normal University(Natural Science),2004,29(3):373-378. |
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| Authors: | WANG Shi-yuan FENG Jiu-chaoSchool of Electronic and Information Engineering Southwest China Normal University Chongqing China |
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| Institution: | WANG Shi-yuan,FENG Jiu-chaoSchool of Electronic and Information Engineering,Southwest China Normal University,Chongqing 400715,China |
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| Abstract: | Side-effects of communication channel seriously impair practical performance of chaos-based communication systems. This paper addresses the issues of blind equalization for chaos-based communication systems. The starting point of this paper is to make use of the Unscented Transform (UT) and the modeling technique for signal, and a blind equalization algorithm is then proposed. It indicates by computer simulation that this algorithm can effectively reduce various distortions and noise in channel. In comparison with the EKF-based algorithm, UT-based algorithm has faster convergence speed and better equalization performance, when channel is with low signal to noise ratio (SNR). |
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| Keywords: | chaos communication fading channel blind equalization Extended Kalman Filter Unscented Transform autoregressive model |
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