| 新的盲信道估计算法 |
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| 引用本文： | 靳天玉,吕振肃,吕鑫.新的盲信道估计算法[J].通信技术,2008,41(12). |
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| 作者姓名： | 靳天玉 吕振肃 吕鑫 |
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| 作者单位： | 兰州大学,信息科学与工程学院,甘肃,兰州,730000 |
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| 基金项目： | 甘肃省自然科学基金
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| 摘 要： | 研究了各种盲信道估计算法.提出一种关于信道的假设,并在此基础上提出一种新的盲信道估计算法.新算法能够同时估计出信号和信道.新算法基于MMSE准则,利用m进制通信系统中,在接收端和发射端都已知信号模式且模式个数有限(K=log2m)的特点,结合预置于算法的信道模型,得到信道模型和信号模式的估计.然后依据MMSE准则得到信道和信号的最佳估计.最后给出仿真结果,仿真表明:新的盲信道估计方法能够精确估计实际信道的等效冲击响应,并能够进行有效通信.
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| 关 键 词： | 信道估计 盲均衡 算法 信道模型 |
A Novel Method for Blind Channel Estimation |
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| JIN Tian-yu,LU Zhen-su,LU Xin.A Novel Method for Blind Channel Estimation[J].Communications Technology,2008,41(12). |
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| Authors: | JIN Tian-yu LU Zhen-su LU Xin |
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| Affiliation: | JIN Tian-yu,LU Zhen-su,LU Xin (School of Information Science Engineering Lanzhou University Lanzhou Gansu 730000,China) |
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| Abstract: | Several methods for blind channel estimation,are studied,and a hypothesis on wireless channel,is proposed.Based on these,a novel method for blind channel estimation is described.The new algorithm is based on MMSE.In an m-ary system,the signal mode and its number (K = log2m) is known at both transmitting and receiving terminals,thus,the new algorithm can conveniently acquire the estimation of all channel model and signal pattern simultaneously.And then,the optimum estimation of channels and signals is obtain... |
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| Keywords: | channel estimation blind channel equalization algorithm channel model |
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