文献类型：期刊文献

中文题名：一种基于虚拟子载波和导频子载波的多天线OFDM系统波束成形算法

英文题名：A beamforming algorithm based on virtual sub-carriers and pilot sub-carriers for OFDM system with adaptive antenna array

作者：李钰[1,2];顾宇杰[2];陈抗生[2]

机构：[1]华东理工大学电子工程系,上海200130;[2]浙江大学信息与电子工程学系,浙江杭州310027

年份：2008

卷号：13

期号：5

起止页码：117

中文期刊名：电路与系统学报

外文期刊名：Journal of Circuits and Systems

收录：北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：正交频分复用;多天线;波束成形;虚拟子载波

外文关键词：OFDM; multiple antennas; beamforming; virtual sub-carriers

摘要：在无线通信系统中,正交频分复用(OFDM)和多天线技术结合可以获得频率分集和空间分集,波束成形是其中的关键技术之一。针对多天线系统的波束成形这一主题,一些学者已经提出了很多波束成形算法,用以提高系统的接收性能。本文提出了一种新的波束成形算法,该算法有效地利用了OFDM系统中的虚拟子载波资源。新算法在加性高斯白噪声单径和多径信道中的仿真结果均表明该算法使系统性能得到了显著提高。
In wireless communication system, orthogonal frequency division multiplexing （OFDM） can be used with multiple antennas to achieve both frequency diversity and space diversity. And beamforming is one of the most important technologies Discussed on the topic of beamforming, many methods have been proposed to decide the weight set for beamformer in order to improve the performance of the system with multiple antennas. In this paper, a new algorithm is proposed to derive the weight set by exploiting the resource of virtual sub-carriers effectively. Computer simulation in AWGN channel and typical urban （TU） channel show its good performance compared to the method based on the pilot sub-carriers only.