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Ergodic mutual information of amplify-and-forward MIMO relay channels with LOS components

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5 Author(s)
Chung-Kai Hsu ; Inst. of Commun. Eng., Nat. Sun Yat-sen Univ., Kaohsiung, Taiwan ; Chao-Kai Wen ; Jung-Chieh Chen ; Wan-Jen Huang
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In this paper, we address the ergodic mutual information of amplify-and-forward multiple-input multiple-output two-hop relay channels. In these channels, the source terminal, relay terminal, and destination terminal are equipped with a number of correlated antennas, and there presents a line-of-sight component on each link. The models have widel applications in the field of machine-type communication devices, such as meters and sensors. Given channel matrices with Gaussian entries, the mean of mutual information is derived under the large-system regimen, in which the number of antennas at the transmitter and the receiver go to infinity with a fixed ratio. Simulation results demonstrate that even for a moderate number of antennas at each end, the proposed analytical results provide undistinguishable results from those obtained by Monte-Carlo simulations. In addition, the well approximation property holds even if the entries of the channel matrices are non-Gaussian.

Published in:

Signal & Information Processing Association Annual Summit and Conference (APSIPA ASC), 2012 Asia-Pacific

Date of Conference:

3-6 Dec. 2012