OFDM波束形成与信道估计联合算法  

A Joint Beamforming and Channel Estimation Algorithm for OFDM

作　　者：邵尉[1] 许世明[1] 孟凡秋[1] 薛红[1] 钱祖平[1] 

机构地区：[1]解放军理工大学通信工程学院

出　　处：《现代军事通信》2014年第4期32-35,40,共5页

基　　金：国家自然科学基金（No.61201241）.

摘　　要：文中设计了一种OFDM波束形成与信道估计联合算法。首先，设计一种新的OFDM数据符号导频分布方案，比传统方案更适于波束形成；继而，采用最小二乘算法结合线性内插实现衰落信道的估计与补偿；最后，为有效抑制干扰信号，设计了一种面向OFDM技术的矩阵块LMS自适应波束形成器。仿真实验表明，设计的OFDM波束形成与信道估计联合算法在衰落补偿和干扰抑制方面均具有良好的性能。A joint beamforming and channel estimation algorithm for orthogonal frequency division multi- plexing （OFDM） is designed in this paper. Firstly, a new OFDM data symbol pilot reallocation scheme is designed to be more applicable for beamforming than tranditional scheme. Secondly, based on the least squares （LS） algorithm and linear interpolation, the fading channel estimation and compensation are made. Finally, in order to mitigate interferences effectively, a matrix block least mean squares （LMS） adaptive beamformer for OFDM technique is designed. Simulation results prove the good anti-jamming and anti-fading performance of the proposed joint beamforming and channel estimation algorithm for OFDM.

关 键 词：OFDM 波束形成 信道估计 抗干扰 抗衰落 

分 类 号：TN957.51[电子电信—信号与信息处理]