| 一种基于PN序列的OFDM时域信道估计方法 |
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| 引用本文： | 姜永权,马逸新. 一种基于PN序列的OFDM时域信道估计方法[J]. 汕头大学学报(自然科学版), 2006, 21(4): 75-80 |
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| 作者姓名： | 姜永权 马逸新 |
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| 作者单位： | 汕头大学工学院电子信息工程系,广东,汕头,515063 |
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| 摘 要： | 提出了一种基于PN序列的OFDM时域信道估计方法,在时域OFDM符号中插入PN序列作为训练序列,将其与对应的接收序列作圆周相关处理,并通过迭代逐次检测出信道各径参数,进而获得信道频率响应估计.仿真结果表明,在相同的信噪比和信道利用率条件下,提出的方法比频域梳状导频估计方法具有更高的信道估计精度.
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| 关 键 词： | 无线通信 正交频分复用(OFDM) 时域信道估计 PN序列 相关处理 |
| 文章编号： | 1001-4217（2006）04-0075-06 |
| 收稿时间： | 2006-02-27 |
| 修稿时间： | 2006-02-27 |
A Time-Domain OFDM Channel Estimation Algorithm Based on PN Sequence |
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| JIANG Yong-quan,MA Yi-xin. A Time-Domain OFDM Channel Estimation Algorithm Based on PN Sequence[J]. Journal of Shantou University(Natural Science Edition), 2006, 21(4): 75-80 |
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| Authors: | JIANG Yong-quan MA Yi-xin |
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| Affiliation: | Department of Flectronic Fngineering, Shantou University, Shanlou 515063, Guangdong, China |
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| Abstract: | A time-domain OFDM channel estimation algorithm is proposed based on PN sequence: PN sequence as training sequence is inserted into OFDM symbol in time domain;the cross-correlation between the received sequence and its corresponding PN sequence is performed and the multipath parameters are obtained iteratively,then the channel frequency response can be acquired.Simulation results show that,with the same signal-to-noise ratio(SNR)and channel utilizing efficiency,the proposed algorithm has better precision of channel estimation. |
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| Keywords: | wireless communication OFDM Time-Domain channcl estimation PN sequence correlation operation |
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