SHERP

Optimum Power Allocation for Beamforming-Based Regenerative Dual-Hop MISO Relay Channels

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Authors
Cho, Hee-Nam; Lee, Jin-Woo; Lee, Yong-Hwan
Issue Date
2009-04
Citation
VTC Spring 2009. IEEE 69th Vehicular Technology Conference, 2009
Keywords
power allocationbeamformingdual-hop relay
Abstract
We consider a power allocation strategy to maximize
the end-to-end capacity of a regenerative dual-hop multiple-input
single-output (MISO) relay channel with the use of transmit
beamforming. In a dual-hop MISO relay channel, the optimum
power allocation can be determined by means of a max-min
technique with sum power constraints. The proposed scheme
adaptively allocates the transmit power of the source and relay
according to the achievable beamforming gain as well as the
average channel gain to balance the capacity between the dualhop
MISO relay channels. Simulation results show that the
proposed scheme can provide noticeable performance
improvement over the average signal-to-noise ratio (SNR)-based
power allocation scheme in a dual-hop MISO relay channel with
the use of the transmit beamforming.
ISSN
http://dx.doi.org/10.1109/VETECS.2009.5073755
Language
English
URI
http://www.ieeevtc.org/vtc2009spring

http://hdl.handle.net/10371/7534
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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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