Analysis on the impact of multi-element transmit antenna system on multiuser diversity

Myoung Won Lee, Cheol Mun, Jin Kyu Han, Jong Gwan Yook, Han Kyu Park

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

In this paper, the performance of a multiuser diversity system paired with a multi-element transmit antenna system is analyzed under the assumption of independent Rayleigh fading. A measure of system level performance is an achievable spectral efficiency as a function of the number of users and antennas. Spectral efficiency is obtained from the instantaneous signal-to-noise ratio (SNR) distribution combined by both TD at each link and multiuser diversity at system level when the base station transmitter adapts to channel variations using a constant power variable rate strategy. Numerical results show that closed-loop antenna techniques provide an additional gain with multiuser diversity system due to array gain, even though space diversity gain reduces multiuser diversity gain. On the other hand, the space-time block coding (STBC) that provides full order space diversity gain only has a destructive impact on multiuser diversity.

Original languageEnglish
Pages (from-to)329-333
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume60
Issue number1
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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