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

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.