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基于广义AIC和RPC的OFDM航空信道估计算法 被引量：1

A Better Algorithm for Estimating Aeronautical Channel OFDM System Based on GAIC and RPC
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摘要 文章通过对航空信道的分析,指出其稀疏信道特征,使用普通算法对此信道进行信道估计会引入高阶矩阵运算,为加快收敛速度、降低实现难度,文中提出了一种利用GAIC(generalized Akaike information criterion)准则和RPC(repeated phase-rotated Chu)训练序列的OFDM航空信道LS(least squares)估计方法,该方法利用GAIC准则确定信道模型的阶次及抽头位置,为减小信道估计的运算复杂度,引入RPC序列作为训练序列,既满足了LS(least squares)估计,又大大简化了计算复杂度。文章针对具体应用给出文中算法的性能仿真结果,证明了此算法可避免高阶矩阵运算,节约了大量权值可忽略抽头所引入的资源占用和计算量,且显著减小估计误差,可更好跟踪快变的稀疏信道。 Aim.We believe that existing algorithms can still be improved in two respects:(1) real-time capability,(2) precision.Section 1 of the full paper analyzes the aeronautical channel and finds that it is sparse.Section 2 discusses our better algorithm for estimating the aeronautical channel OFDM(orthogonal frequency division multiplexing) system using GAIC(generalized Akaike information criterion) and RPC(repeated phase-rotated Chu) sequence.Subsection 2.1 utilizes the GAIC to estimate the maximum time delay of...
作者 何剑 王永生 姚如贵 王宽德
机构地区 西北工业大学电子信息学院
出处 《西北工业大学学报》 EI CAS CSCD 北大核心 2009年第2期250-254,共5页 Journal of Northwestern Polytechnical University
基金 航空基金(2007ZC53030) 航天科技创新基金(N7CH0001)资助
关键词 航空信道 稀疏信道 广义Akaike信息论准则 重复相位 旋转Chu序列 orthogonal frequency division multiplexing estimation aeronautical channel sparse channel GAIC（generalized Akaike information criterion） RPC（repeated phase-rotated Chu） sequence
分类号 TN919.3 [电子电信—通信与信息系统]
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共引文献7

同被引文献15

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  • 3Kyungchul Kwak, Sungeun Lee, Jihyung Kim, et al. A new dR-based channel estimation approach for OFDM with virtual subcarriers by leakage estimation[J]. IEEE Transactions on wire- less communications, 2008, 7(6): 2004-2008.
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引证文献1

二级引证文献6

西北工业大学学报
2009年 第2期

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