IJPAM: Volume 29, No. 3 (2006)

STF CODING FOR MIMO-OFDM SYSTEMS WITH
FOUR OR THREE TRANSMIT ANTENNAS

Peng Zhang$^1$, Laurie L. Joiner$^2$
$^{1,2}$Department of Electrical and Computer Engineering
University of Alabama in Huntsville
Huntsville, AL 35899, USA
$^1$e-mail: zhangp1@ece.uah.edu
$^2$e-mail: ljoiner@ece.uah.edu


Abstract.A space-time-frequency (STF) coding scheme based on quasi-orthogonal space-time block coding (QOSTBC) for MIMO-OFDM systems with four or three transmit antennas is presented. A low-complexity linear decoding algorithm is developed to mitigate the diversity loss caused by inter-symbol couplings in decoding of the block code in a non-quasi-static OFDM channel. Simulation shows that the proposed coding scheme combined with the linear decoder exhibits a significant advantage in BER performance and decoding simplicity over the counterpart space-frequency (SF) scheme in a slow fading channel.

Received: May 23, 2006

AMS Subject Classification: 94B12

Key Words and Phrases: quasi-orthogonal space-time block codes, linear decoding, MIMO-OFDM

Source: International Journal of Pure and Applied Mathematics
ISSN: 1311-8080
Year: 2006
Volume: 29
Issue: 3