| 一种实用性强的MC-CDMA盲信道估计方法 |
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| 引用本文： | 陈洪,崔健,张尔扬.一种实用性强的MC-CDMA盲信道估计方法[J].信号处理,2008,24(1):95-99. |
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| 作者姓名： | 陈洪 崔健 张尔扬 |
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| 作者单位： | 1. 国防科技大学电子科学与工程学院,长沙,410073
2. 武汉通信指挥学院,武汉,430010 |
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| 摘 要： | 基于子空间分解的MC-CDMA盲信道估计算法运算量大,实用性差.本文根据在MC-CDMA中信号子空间维数远小于噪声子空间维数的特点提出从信号子空间的角度进行MC-CDMA盲信道估计,并采用PASTd算法对信号子空间及其维数进行动态跟踪.本文还通过对子空间跟踪的结果进行正交化处理的方法,显著提高了盲信道估计的性能.本文的盲信道估计方法运算量低,实用性强,仿真结果表明其盲信道估计性能接近特征值分解法.
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| 关 键 词： | 信号子空间 MC-CDMA 盲信道估计 信道估计方法 practicality Strong Estimation Method Channel 分解法 特征值 估计性能 盲信道估计 仿真结果 处理 正交化 子空间跟踪 动态跟踪 空间维数 信号子空间 信道估计算法 子空间的 声子 运算量 |
| 修稿时间： | 2006年5月26日 |
A MC-CDMA Blind Channel Estimation Method with Strong practicality |
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| CHEN Hong,CUI Jian,ZHANG Er-yang.A MC-CDMA Blind Channel Estimation Method with Strong practicality[J].Signal Processing,2008,24(1):95-99. |
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| Authors: | CHEN Hong CUI Jian ZHANG Er-yang |
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| Abstract: | Blind channel estimation method of MC-CDMA based on subspace decomposition has bad practicability because of the computation burden.A blind channel estimation method based on signal suhspace was presented in this paper according to the fact that the size of signal subspace is much less than that of noise subspace and a PASTd algorithm was adopted to track the signal subspace.The method has excellent channel estimation performance through orthogonalize the result of PASTd subspace tracking.The method in this paper has low complexity and strong practicality and the simulation shows that the performance of the blind channel estimation approa- ches that of eigenvalue decomposition based algorithm. |
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| Keywords: | signal subspace MC-CDMA blind channel estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
