Antenna selection with superposition for 4 × 2 DSTTD systems

Authors:
Jingon Joung;Ali H. Sayed;Yong H. Lee
Affiliations:
Department of Electrical Engineering, University of California, Los Angeles, CA;Department of Electrical Engineering, University of California, Los Angeles, CA;School of EECS, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
Venue:
IEEE Communications Letters
Year:
2009

Citing 1
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Efficient adaptive receivers for joint equalization and interference cancellation in multiuser space-time block-coded systems

IEEE Transactions on Signal Processing

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Abstract

From 1820 4 × 4 binary matrices, 253 binary pre-processing matrices are designed for double space-time transmit diversity (DSTTD) systems with two 2 × 2 space-time block code (STBC) encoders. Among them, six matrices yielding the highest average minimum-post-processing SNR are proposed from numerical experimentation under uncorrelated channel conditions. The proposed preprocessing performs a superposition of the first and second (second and first) STBC symbols and a selection of two transmit antennas. Simulation results show that the proposed method provides 1.7 dB (1.8 dB) SNR improvement in uncorrelated (correlated) channel environment at 10-3 bit error rate over the conventional antenna shuffling method.