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Coherent opportunistic beamforming with partial channel information in multiuser wireless systems
Cited 9 time in
Web of Science
Cited 10 time in Scopus
- Authors
- Issue Date
- 2008-02
- Citation
- IEEE Trans. Wireless Commun., vol. 7, pp. 705-713, Feb. 2008
- Keywords
- beamforming ; multiuser diversity ; partial 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
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