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Rotated Constellations with Scaled Factor for High-Rate Full-Diversity STBC of 2 and 4 Antennas

Authors:
Yier Yan
Jun Li
Tae Chol Shin
Moon Ho Lee

Keywords: STBC; ML; Constellation; High-rate; MPSK

Abstract:
We design a new full-diversity orthogonal space-time block code (STBC) transmission scheme for QPSK with 2 transmitting antennas (TX) by one modified QPSK constellation with rotated and scaled factor by maximizing the CGD (coding gain distance) from the set of quaternions used in the Alamouti code. A low-complexity maximum likelihood (ML) decoding algorithm has been proposed that not only provide good FER (frame error rate) as same as but also increase the transmitted rate approach the without additional bandwidth. Finally, we extend the design to the case for 4 TX with low complexity by enlarging the set of Quasi-Orthogonal STBC proposed in without power scaling. Extension to general M-PSK constellation is also straightforward is the simulation results. The simulation result shows that the proposed scheme provides a better Channel Throughput performance than the original work.

Pages: 29 to 33

Copyright: Copyright (c) IARIA, 2012

Publication date: May 27, 2012

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-199-1

Location: Stuttgart, Germany

Dates: from May 27, 2012 to June 1, 2012