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ThinkMind // AICT 2012, The Eighth Advanced International Conference on Telecommunications // View article aict_2012_2_20_10111
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
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