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一种基于PCC训练符号的OFDM信道估计算法 被引量：3

A Channel Estimation Algorithm for OFDM Based on PCC Training Symbols
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摘要 分析了正交频分复用(OFDM)信道估计中的信道冲激响应(CIR)泄漏问题,提出了一种新的时域信道估计算法.使用多项式相消编码(PCC)训练符号进行信道估计,利用其频谱陡降的特点减少保护边带宽度,进而降低CIR泄漏.与已有的OFDM信道估计算法进行了比较,仿真结果证明,该算法极大降低了信道估计均方误差(MSE)值,改善了系统误码率(BER)性能. The leakage of channel impulse response （CIR） in channel estimation for the orthogonal frequency division multiplexing （OFDM） systems is analyzed. A channel estimation algorithm in time do- main is newly proposed. To overcome the leakage of CIR, the frequency guard bands are reduced by using the polynomial cancellation coding （PCC） training symbols . The symbols have fast spectral rolloff. Comparison has been done between the proposed algorithm and the existing channel estimation algorithms. Simulation results show the decreasing of channel estimation mean square （MSE） and the improvement of bit error rate （BER） performance by the proposed algorithm.
作者 唐恬 姜军 张平
机构地区 北京邮电大学电信工程学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2007年第4期37-40,共4页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(60302025)
关键词 正交频分复用 信道估计 多项式相消编码 orthogonal frequency division multiplexing channel estimation polynomial cancellation coding
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献6

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共引文献10

同被引文献25

  • 1梁永明,罗汉文,黄建国.MIMO-OFDM系统中一种基于自适应滤波的信道估计方法[J].电子与信息学报,2007,29(2):310-313. 被引量：14
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  • 10Min H and Bhargava V K. An investigation into time-domain approach for OFDM channel estimation [J]. IEEE ~uns. on Broadcasting, 2000, 46(4): 240-248.

引证文献3

二级引证文献10

北京邮电大学学报
2007年 第4期

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