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http://dx.doi.org/10.5573/ieek.2013.50.2.027

Low Complexity Power Allocation Scheme for MIMO Multiple Relay System With Weighted Diagonalization  

Lee, Bumsoo (Department of Electrical and Electronic Engineering, Yonsei University)
Lee, Chungyong (Department of Electrical and Electronic Engineering, Yonsei University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.50, no.2, 2013 , pp. 27-34 More about this Journal
Abstract
We propose a simple power allocation scheme for an amplify-and-forward multiple relay system with multiple-input multiple-output antennas. Unlike the existing relay precoding matrix with full elements, proposed precoder is a diagonal matrix whose diagonal element is the relay gain for each stream. Furthermore, a weight vector is applied to streams, such that the mutual information of the system approaches that of the exhaustive search scheme, regardless of the number of antennas. Numerical results show that proposed scheme outperforms the conventional schemes with respect to mutual information.
Keywords
전력 할당;다중 안테나;다중 중계 시스템;증폭 후 재전송;가중치 대각화;
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Times Cited By KSCI : 1  (Citation Analysis)
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