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.
出处
《电子学报》
EI
CAS
CSCD
北大核心
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)
