Title :
Antenna selection with superposition for 4 x 2 DSTTD systems
Author :
Joung, Jingon ; Sayed, Ali H. ; Lee, Yong H.
Author_Institution :
Dept. of Electr. Eng., Univ. of California (UCLA), Los Angeles, CA, USA
fDate :
7/1/2009 12:00:00 AM
Abstract :
From 1820 4 times 4 binary matrices, 253 binary preprocessing matrices are designed for double space-time transmit diversity (DSTTD) systems with two 2 times 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.
Keywords :
block codes; diversity reception; error statistics; matrix algebra; space-time adaptive processing; space-time codes; transmitting antennas; antenna selection; antenna shuffling method; average minimum-post-processing; binary matrices; binary preprocessing matrices; bit error rate; double space-time transmit diversity system; signal to noise ratio; space-time block code encoder; transmit antennas; AWGN; Additive white noise; Antenna feeds; Bit error rate; Feedback; Gaussian noise; MIMO; Receiving antennas; Transceivers; Transmitting antennas; Double space-time transmit diversity (DSTTD), antenna shuffling, antenna selection, superposition.;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.090434
