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Effect of Channel Estimation Error on Capacity of MIMO Systems  

함재상 (연세대학교 전기전자공학과)
심세준 (연세대학교 전기전자공학)
이충용 (연세대학교 전기전자공학)
박현철 (한국정보통신대학교 전기전자공학)
홍대식 (연세대학교 전기전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.41, no.8, 2004 , pp. 63-68 More about this Journal
Abstract
The capacity of MIMO systems is numerically analyzed when channel estimation error exists. The analysis shows that the capacity is influenced by Mean Square Error (MSE) as well as average Signal to Noise Ratio (SNR). Furthermore, in this paper we present the standard selecting a channel estimator suitable to a system owing to get a tolerable channel estimation error in a given average SNR and channel capacity loss. The simulation results show that the tolerable MSEs for 1 bps/Hz capacity loss are about 10$^{-2}$ and 10$^{-4}$ at n dB and 40 dB average SNR, respectively.
Keywords
MIMO systems; channel capacity; channel estimation error; mean square error;
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