WLAN中一种新的OFDM时域波束赋形方法  

A New Beamforming Technique in Time-domain for WLAN-OFDM Systems

作　　者：李平安[1] 赵凤飞[1] 

机构地区：[1]武汉理工大学信息工程学院,武汉430070

出　　处：《武汉理工大学学报》2006年第11期117-120,共4页Journal of Wuhan University of Technology

基　　金：湖北省自然科学基金(2005ABA224)

摘　　要：针对无线局域网的环境,该文对无线局域网(WLAN)正交频分复用(OFDM)系统应用天线阵,并且在时域中提出一种新的2级扫描式空间匹配方法进行波束赋形,相对于传统的空间匹配和主特征值矢量赋形方法,其性能几乎完全相同但计算量大为减少,同时比起波束切换方法,这种新方法精度更高且无需增加过多的计算量,仿真比较了基于上述几种方法的OFDM系统的性能。In an orthogonal frequency division multiplexing （OFDM） system with an antenna array, implementing beamforming in time- domain was more efficient in computation than in frequency-domain. In this paper, a new beamforming technique in time-domain for an OFDM system in wireless local area networks （WLAN） was proposed. Compared with other conventional beamforming approaches in time-domain, the proposed beamforming approach could furthermore reduce the computational complexity significantly while its BER performance can almost match the others.

关 键 词：正交频分复用 波束赋形 天线阵 

分 类 号：TN821[电子电信—信息与通信工程]