EM based semi-blind beamforming algorithm in MIMO-OFDM systems

被引：2
|
作者：
Zamiri-Jafarian, H. [1 ,2 ]
Bokharaiee-Najafee, S. [1 ]
Pasupathy, S. [2 ]
机构：
[1] Ferdowsi Univ Mashhad, Dept Elect Engn, Mashhad, Iran
[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON, Canada
来源：
2007 IEEE PACIFIC RIM CONFERENCE ON COMMUNICATIONS, COMPUTERS AND SIGNAL PROCESSING, VOLS 1 AND 2 | 2007年
关键词：
beamforming; expectation maximization algorithm; MIMO; OFDM; semi-blind; SVD;
D O I：
10.1109/PACRIM.2007.4313209
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
A new EM based semi-blind beamforming algorithm is proposed in this paper for multiple input multiple output (MIMO) systems in which orthogonal frequency division multiplexing (OFDM) technique is used. Employing singular value decomposition (SVD) technique, the semi-blind beamforming algorithm eliminates space interference in an iterative manner by shaping antenna patterns in transmitter and receiver sides in frequency domain. A 16-QAM MIMO-OFDM system is considered for computer simulations in order to evaluate the performance of the new algorithm under different scenarios. The results show that the proposed algorithm outperforms subspace based semi-blind beamforming method.
引用
收藏
页码：190 / +
页数：2
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