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Adaptive Power Allocation in Spatially Correlated Dual-Hop MIMO Relay Channels

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Authors
Kim, Ah-Young; Cho, Hee-Nam; Lee, Yong-Hwan
Issue Date
2009-06
Citation
IWCMC'09. Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, pp. 869-873, 2009
Keywords
channel correlationdual-hop MIMO realy channelspower allocation
Abstract
This paper considers power allocation in a spatially correlated
dual-hop multiple-input multiple-output (MIMO) relay channel.
In a dual-hop MIMO relay channel, it is desirable to balance the
capacity of each hop channel by dynamically allocating the
transmit power according to the channel condition. In fact, the
end-to-end capacity of a dual-hop relay channel can be
maximized by means of max-min optimization with constraint on
total power. This paper considers the improvement of the end-toend
capacity by allocating the transmit power according to the
average channel gain and the spatial correlation between the dualhop
MIMO relay channels. Simulation results show that the
proposed scheme provides significant performance improvement
over the power allocation based on the average signal-to-noise
ratio (SNR).
Language
English
URI
http://iwcmc.com

http://hdl.handle.net/10371/7529
DOI
https://doi.org/10.1145/1582379.1582568
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Others_전기·정보공학부
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