IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
Joint subchannel matching and power allocation for the MIMO broadcast relay channel
Seunghun JangChan-ho AhnDong Ku Kim
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2010 Volume 7 Issue 13 Pages 949-955

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Abstract

We propose a joint matching and relay power allocation scheme based on an interference-free architecture for the multiuser multiple-input multiple-output (MIMO) broadcast relay channel. Instead of using brute-force search, we propose a matching scheme that assigns the better subchannels at the first hop to the destinations with lower power costs. It is shown that the proposed matching scheme is optimal for certain power allocation schemes. Simulation results show that proposed matching scheme combined with water-filling power allocation is nearly optimal for the joint optimization problem of matching and power allocation.

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© 2010 by The Institute of Electronics, Information and Communication Engineers
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