SHERP

Coherent opportunistic beamforming with partial channel information in multiuser wireless systems

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Authors
Ko, Jae-Yun; Oh, Dong-Chan; Lee, Yong-Hwan
Issue Date
2008-02
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
IEEE Trans. Wireless Commun., vol. 7, pp. 705-713, Feb. 2008
Keywords
beamformingmultiuser diversitypartial channel information
Abstract
In this paper, we propose a new beamforming
scheme that can work with partial channel information. The proposed beamforming scheme can simultaneously achieve multiuser
diversity (MUD) gain and beamforming gain by utilizing the beam weight information of the selected user in addition to the signal-to-noise ratio (SNR) information of all users. To fully exploit spatial multiplexing gain, we further consider the use of multiple beams. Multiple beams are generated in a sequential manner to reduce the interference among users, while virtually increasing the desired signal power. Finally, we analyze the
performance of the proposed scheme and verify it by computer simulation. Although the proposed scheme is somewhat affected
by the user mobility, numerical results show that the proposed scheme is quite effective in low mobility environments.
ISSN
1536-1276
Language
English
URI
http://hdl.handle.net/10371/6532
DOI
https://doi.org/10.1109/TWC.2008.060649
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
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