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Orthogonal Muti-beam Techniques for Multi-user Diversity and Multiplexing Gain in Packet-based Wireless Systems

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Authors
Oh, Dong-Chan; Lee, Yong-Hwan
Issue Date
2007-11
Citation
ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on Signals, Systems and Computers, 2007
Keywords
Orthogonal Multi-beamMulti-userDiversityMultiplexing
Abstract
In this paper, we consider the use of orthogonal
multiple beams (OMBs) to simultaneously achieve multi-user
diversity and multiplexing gain in a packet-based wireless system.
Previous schemes consider the use of a fixed number of OMBs
according to the number of transmit antennas. However, unless the
number of active users is sufficiently large, the use of multiple
beams may not provide desired performance mainly due to the
interference from other users signals, being even worse than the
use of a single beam. To alleviate this problem, we consider the
adjustment of the number of beams in use to maximize the
spectral efficiency according to the operating condition.
Simulation results show the validity of the proposed scheme.
Language
English
URI
http://www.asilomarssc.org

https://hdl.handle.net/10371/7152
DOI
https://doi.org/10.1109/ACSSC.2007.4487517
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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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