基于用户位置信息的波束成形算法及误码性能分析  

Location Based Beamforming Algorithm and Symbol Error Performance Analysis

作　　者：刘智鹏 肖圣杰 胡振威 靳沛铮 淡振雷 袁祖霞 Liu Zhi-peng;Xiao Sheng-jie;Hu Zhen-wei;Jin Pei-zheng;Dan Zhen-lei;Yuan Zu-xia(College of Telecommunications and Information Engineering Nanjing University of Posts and Telecommunications,Jiangsu Nanjing 210003)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《电子质量》2020年第12期13-17,共5页Electronics Quality

基　　金：江苏省研究生科研与实践创新计划项目(SJCX19_0237,KYCX19_0896)资助课题。

摘　　要：由于当前GPS技术的飞速发展,发射端能够更加精确地获取用户接收端的位置信息,因此该文针对无线通信系统中存在的信令开销较大的问题,提出了一种基于用户位置信息的码本设计波束成形(Beamforming, BF)方案,并分析了系统的误符号性能。具体而言,首先在假设信道衰落特性服从莱斯分布的情况下,以最大化信噪比为准则得到了最优的BF权矢量。然后考虑到发射端配备两种不同结构的阵列天线,分别给出了二维BF和三维BF的码本设计方案。接着推导出使用码本时的系统平均误符号率闭合表达式。最后,计算机仿真结果验证了码本设计的有效性并分析了典型参数对系统性能的影响。With the rapid development of GPS technology,the transmitter can obtain the location information of receiver more accurately.Aiming at the problem of high signaling overhead in wireless communication system,a location based beamforming(BF)scheme is proposed,and the symbol error performance of the system is analyzed.Specifically,under the assumption that the fading characteristics of the channel obey the Rician distribution,the optimal BF weight vector is obtained under the criterion of maximizing the signal-to-noise ratio.Considering that the transmitter is equipped with two array antennas with different structures,the codebook design schemes of two-dimensional BF and three-dimensional BF are respectively given.Then,the closed expression of system average symbol error rate when codebook is used is derived.Finally,computer simulation results verify the effectiveness of codebook design and analyze the influence of typical parameters on system performance.

关 键 词：阵列天线 波束成形 码本设计 性能分析 

分 类 号：TN92[电子电信—通信与信息系统]