存在误差情况下的QSP波束成形器性能分析  

The Performance of QSP Beamformer with Array Error

作　　者：史双宁[1] 尚勇[1] 梁庆林[1] 梁斌[2] 

机构地区：[1]北京大学信息科学技术学院,北京100871 [2]新疆石河子大学信息科学技术学院,新疆石河子832003

出　　处：《电子学报》2008年第6期1088-1091,共4页Acta Electronica Sinica

基　　金：国家自然科学基金资助项目(No.60302006,No.60462002)

摘　　要：在移动通信中,由于移动而导致信号波达方向不断变化,同时天线阵导向矢量扰动误差和采样协方差矩阵估计误差的存在,使得传统波束成形器产生波束畸变和明显的输出信干噪比下降.QSP波束成形器作为一种新的鲁棒性波束成形器,在上述应用场景,具有很好的性能.本文分析了QSP波束成形器的性能,并通过仿真比较验证了QSP波束成形器的有效性.分析和实验表明,在上述应用环境中,通过适当调整影响因子,QSP波束成形器较传统波束成形器有更稳定的输出性能.the movement of the terminals in mobile communication which leads to the continuous changing of the DOAs of all signals, the random steering vector errors and the covariance matrix estimation errors result in the degradation of the output SINR with conventional beamformer. As a new robust beamformer, QSP beamformer presents its good performance in that situation depending on its efficiency and validity. The simulations prove the stable output can be maintained in different environment with different impact factor.

关 键 词：波束成形 量子信号处理 影响因子 阵列误差 

分 类 号：TN911.23[电子电信—通信与信息系统]