Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2007, Vol. 30 ›› Issue (3): 83-87.doi: 10.13190/jbupt.200703.83.wangjf

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Performance Analysis on Receiver Algorithms in Spatial Multiplexing STBC Systems

WANG Jian-feng, XU Hui, ZHENG Kan, WANG Wen-bo   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-09-02 Revised:2006-11-20 Online:2007-06-30 Published:2007-06-30
  • Contact: WANG Jian-feng

Abstract:

The basic principle and receiver algorithms of spatial multiplexing-space time block code (SM-STBC) system are first introduced. The theory analysis on zero-forcing (ZF) detection is presented, based on the probability density function (PDF) of the output signal to noise rate (SNR). Therefore, the diversity gain and un-coded bit error rate (BER) expressions are derived and verified by computer simulation. Theory analysis and simulation results both demonstrate that through introducing STBC to the SM systems, SM-STBC can achieve much more diversity gain, i.e. better BER performance, at the price of loss of partial multiplexing gain.

Key words: multiple-input multiple-output, spatial multiplexing, space-time block code, zero-forcing detector, diversity gain

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