Ml-Based Iterative Channel And Spatial Covariance Estimation In Asynchronous Interference Environment For Ofdma System

Jun Hee Jang,Jung Su Han,Sung Soo Kim,Hyung-Jin Choi

2009 IEEE INTERNATIONAL CONFERENCE ON CONSUMER ELECTRONICS（2009）

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摘要

To mitigate the asynchronous ICI (Inter-Cell Interference), the CFR (Channel Frequency Response) and SCM (Spatial Covariance Matrix) should be accurately estimated. Therefore, we propose the ML (Maximum Likelihood)-based iterative method which can effectively reduce the estimation error of both CFR and SCM, and improve the performance for OFDMA system such as LTE (3GPP Long Term Evolution).

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关键词

maximum likelihood,maximum likelihood estimation,ofdm modulation,interference,frequency response,covariance matrix,covariance estimation,iterative methods,estimation,iteration method,ofdm

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