Evaluation of QO-STBC schemes for four transmit antennas

Authors:
Pingping Shang;Unhee Park;Sooyoung Kim
Affiliations:
Division of Electronics & Information Engineering, Chonbuk National University, Jeonju, Korea;Division of Electronics & Information Engineering, Chonbuk National University, Jeonju, Korea;Division of Electronics & Information Engineering, Chonbuk National University, Jeonju, Korea
Venue:
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Year:
2009

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Abstract

In this paper, we evaluate a few quasi-orthogonal space-time block coding (QO-STBC) schemes for four transmit antennas. Recently, QO-STBC with minimum decoding complexity (MDC-QO-STBC) was proposed. We provide a new analysis result on MDC-QO-STBC. We show that the encoding matrix of the MDC-QO-STBC is equivalent to the conventional QO-STBC. We also prove that this scheme can be linearly decoded at the receiver. This is achieved by modification of the encoding matrix via rotation of the channel correlation matrix.