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Orthogonal Muti-beam Techniques for Multi-user Diversity and Multiplexing Gain in Packet-based Wireless Systems
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Cited 3 time in Scopus
- Authors
- Issue Date
- 2007-11
- Citation
- ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on Signals, Systems and Computers, 2007
- Keywords
- Orthogonal Multi-beam ; Multi-user ; Diversity ; Multiplexing
- 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
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