S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Electrical and Computer Engineering (전기·정보공학부) Others_전기·정보공학부
Multi-user diversity and multiplexing with multiple coherent beams in wireless systems
- Oh, Dong-Chan; Ko, Jae-Yun; Lee, Yong-Hwan
- Issue Date
- ICC '06. IEEE International Conference on Communications,2006
- In this paper, we propose a multi-beam
multiplexing scheme that can simultaneously achieve spatial
multiplexing gain and multi-user diversity (MUD) gain by
generating coherent multiple beams in the multi-user domain.
Multiple beams are generated to provide multiple channels in
parallel, making it possible to achieve the MUD gain through
each channel. Since the transmission power is spilt into multiple
channels, the signal-to-noise power ratio (SNR) of each channel
is reduced inversely proportional to the number of beams.
However, multiple beams are utilized to make the multiplexing
gain much larger than the decrease of SNR, increasing the
overall system capacity. The proposed scheme is applicable to
both multi-input multi-output (MIMO) and multi-input singleoutput
(MISO) schemes, enabling the use of flexible antenna
structures in the receiver.
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