| 基于倒谱分析的OFDM信道估计方法 |
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| 引用本文： | 郑济均,林竞力,朱维乐.基于倒谱分析的OFDM信道估计方法[J].电子科技大学学报（自然科学版）,2011,40(4):509-511. |
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| 作者姓名： | 郑济均 林竞力 朱维乐 |
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| 作者单位： | 1.空军大连通信士官学校有线电通信系 辽宁 大连 116100; |
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| 摘 要： | 时域同步正交频分复用(TDS-OFDM)系统利用PN序列作为保护间隔,其中保护间隔用作系统同步和信道估计.由于PN序列相关不是理想δ函数,在信道估计时引入了额外误差.该文对倒谱分析在信号处理中的应用进行了研究,提出了基于倒谱分析的OFDM信道均衡算法.该算法利用QPSK信号作为导频信号,运用倒谱进行信道估计.在多径信道...
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| 关 键 词： | 倒谱分析 信道估计 倒谱 正交频分复用 时域同步正交频分复用 |
| 收稿时间： | 2009-12-08 |
Equalization Method for OFDM System Based on Cepstrum Analysis |
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| Affiliation: | 1.Wire Communication Department,Dalian Airforce Communication NCO Academy Dalian Liaoning 116100;2.School of Electrical and Information Engineering,Xihua University Chengdu 610039;3.School of Electronic Engineering,University of Electronic Science and Technology of China Chengdu 610054 |
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| Abstract: | Time domain synchronous-orthogonal frequency-division multiplexing (TDS-OFDM) system makes use of PN sequence as guard interval, which is used as channel estimation. Because PN serial correlation is not ideal δ function, extra error has been inducted. A channel equalization method suitable for OFDM system is propose in the paper. Cepstral technique is employed in the method to attain the channel equalization. The simulation results indicate that this method has perfect equalization effect. |
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