非理想双极化多天线系统中的信道信息反馈方法
发布时间：2019-06-07 18:52
【摘要】：在实际环境中,布置双极化天线时存在极化泄漏问题,影响信道信息量化反馈方法的精度,大规模天线系统中会造成预编码性能明显下降.本文从双极化信道模型出发,将信道矩阵分解为理想极化信道部分和极化泄露部分,并对各部分信道的特征矢量进行了分析,得到了各部分最佳特征矢量模型.基于这些模型,给出了基于多个分量加权合并的信道特征矢量量化反馈方法,能够有效地适应极化泄露带来的影响.仿真结果表明,该反馈方法能有效提高信道信息的量化效率和精度,进而获得明显的谱效率提升.
[Abstract]:In the actual environment, there is a polarization leakage problem when the dual-polarization antenna is arranged, which affects the accuracy of the channel information quantification feedback method, and the precoding performance of the large-scale antenna system will be obviously degraded. In this paper, based on the dual polarization channel model, the channel matrix is decomposed into ideal polarization channel part and polarization leakage part, and the characteristic vector of each part of the channel is analyzed, and the optimal feature vector model of each part is obtained. Based on these models, a channel feature vector quantization feedback method based on weighted combination of multiple components is proposed, which can effectively adapt to the influence of polarization leakage. The simulation results show that the feedback method can effectively improve the quantification efficiency and accuracy of channel information, and then obtain obvious spectral efficiency improvement.
【作者单位】： 北京邮电大学网络体系架构与融合北京市重点实验室;中兴通讯股份有限公司;
【基金】：国家“八六三”计划项目(2014AA01A706)
【分类号】：TN919.3
[Abstract]:In the actual environment, there is a polarization leakage problem when the dual-polarization antenna is arranged, which affects the accuracy of the channel information quantification feedback method, and the precoding performance of the large-scale antenna system will be obviously degraded. In this paper, based on the dual polarization channel model, the channel matrix is decomposed into ideal polarization channel part and polarization leakage part, and the characteristic vector of each part of the channel is analyzed, and the optimal feature vector model of each part is obtained. Based on these models, a channel feature vector quantization feedback method based on weighted combination of multiple components is proposed, which can effectively adapt to the influence of polarization leakage. The simulation results show that the feedback method can effectively improve the quantification efficiency and accuracy of channel information, and then obtain obvious spectral efficiency improvement.
【作者单位】： 北京邮电大学网络体系架构与融合北京市重点实验室;中兴通讯股份有限公司;
【基金】：国家“八六三”计划项目(2014AA01A706)
【分类号】：TN919.3
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