| 基于正交多相序列的OFDM信道估计算法 |
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| 引用本文： | 孙丽花,肖丽萍.基于正交多相序列的OFDM信道估计算法[J].电子技术,2009,36(8):54-56. |
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| 作者姓名： | 孙丽花 肖丽萍 |
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| 作者单位： | 燕山大学,信息科学与工程学院 |
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| 摘 要： | 提出了一种基于正交多相序列的OFDM信道估计算法。该算法采用相关性能良好的正交多相序列作为发送信号的循环前缀，在接收端，提取循环前缀，进行相关计算，最终得到系统频域响应的估计值。通过仿真，验证了在多径衰落信道中，提出的算法比频域梳状导频插入的时域滤波算法及采用小m序列作为循环前缀的信道估计算法具有更高的信道估计精度。
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| 关 键 词： | 正交频分复用 信道估计 正交多相序列 循环前缀 |
OFDM Channel Estimation Algorithm Based on Orthogonal Polyphase Sequence |
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| Sun Lihua,Xiao Liping.OFDM Channel Estimation Algorithm Based on Orthogonal Polyphase Sequence[J].Electronic Technology,2009,36(8):54-56. |
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| Authors: | Sun Lihua Xiao Liping |
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| Affiliation: | College of Information Science and Engineering;Yanshan University |
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| Abstract: | A new OFDM channel estimation algorithm based on orthogonal polyphase sequence is proposed.It uses orthogonal polyphase sequence which has good related performance as the cyclic prefix of transmitting information.At the receiving end, we extract the cyclic prefix, then do related calculations, finally get the estimated value of the frequency-domain response.The simulation result shows that, in multipath fading channels, the proposed algorithm can implement a more accurate estimation than those the time-doma... |
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| Keywords: | orthogonal frequency division multiplexing （OFDM） channel estimation orthogonal polyphase sequence cyclic prefix （CP） |
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