In o rder to t rack the channel variat ion of MIMO􀀁 OFDM sy stems, t radit io nal channel identif icat io n methods based on training sequence had to send larg e amount of redundant informat ion, w hich result s in low er eff iciency o f t ransmissio n. Meanw hile, the blind method based o n subspace may have inevitable ambiguity and low er precision of identif icat io n. In this paper, an est imat io n method fo r the ambiguity mat rix is proposed, which utilizes less tr aining symbo ls to rect ify the result s f rom subspace method. T he simulation result s show that this pro posed algo rithm can reduce the amount of t raining symbols and incr ease the ef ficiency of t ransmission.

基于模糊矩阵辨识的半盲MIMO_OFDM信道辨识算法.pdf

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