| 基于LS信道估计的SC-FDE系统性能研究 |
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| 引用本文： | 姬国伟,葛利嘉,龙秀虹.基于LS信道估计的SC-FDE系统性能研究[J].军事通信技术,2010(1). |
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| 作者姓名： | 姬国伟 葛利嘉 龙秀虹 |
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| 作者单位： | 重庆通信学院研究生队;重庆通信学院信息工程系; |
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| 摘 要： | 无线高速传输系统中存在严重的多径干扰,因此需要采用均衡技术,而均衡技术需要接收端准确掌握信道参数。根据文中设计的帧结构,本文改进了最小二乘(LS)信道估计算法并提出一种新的信噪比估计方法,该改进算法可以在减少运算量的同时保持估计精度。利用估计出的信道参数,文中仿真比较了三种不同均衡技术对系统性能的影响,最终的结果表明,该信道参数估计方法联合判决反馈均衡,可以很好的实现SC-FDE系统的高速信号传输,满足实际系统设计的需要。
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| 关 键 词： | 频域均衡 判决-反馈均衡 最小二乘算法 信道估计 信噪比估计 |
Performance Study of SC-FDE System Based on LS Channel Estimation |
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| JI Guo-wei,GE Li-jia,LONG Xiu-hong.Performance Study of SC-FDE System Based on LS Channel Estimation[J].Journal of Military Communications Technology,2010(1). |
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| Authors: | JI Guo-wei GE Li-jia LONG Xiu-hong |
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| Institution: | 1.Postgraduate Team CCI/a>;Chongqing 400035/a>;China/a>;2.Department of Information Engineering CCI |
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| Abstract: | Equalization is needed because of the multi-path interference that exists in the wireless transmission system, requiring that the receiver knows the channel parameter correctly. Based on the frame construction designed in this paper, the least square algorithm of channel estimation was improved and a new method of Signal-to-Noise estimation was presented. The influences of different equalization technologies on system performance were simulated and compared, showing that signal transmission of SC-FDE system... |
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