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High-rate Complex Orthogonal Space-time Block Codes for 5 and 6 Transmit Antennas

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Abstract

Based on orthogonal designs, space-time (ST) block codes that enable full diversity as well as a simple maximum likelihood (ML) decoding algorithm at the decoder can be constructed for more than two transmit antennas. For real constellations (such as PAM), ST block codes with transmission rate 1 can be designed from the real Hurwitz-Radon families for any number of transmit antennas. However, for complex constellations (such as M-PSK or M-QAM), ST block codes for more than two transmit antennas can only be constructed with rates less than 1. Previous attempts have been concentrated on complex orthogonal designs that provide ST block codes with full diversity and high transmission rates. In this paper, we present two rate 2/3 complex ST block codes from orthogonal designs for five and six transmit antennas, respectively. Simulation results are provided to demonstrate the significant performance gains made by the proposed ST block codes.

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Authors and Affiliations

  1. State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, 100044, China

    Changlong Xu & Wei Yang

  2. National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, China

    Changlong Xu

  3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore

    Yi Gong

Authors
  1. Changlong Xu
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  2. Yi Gong
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  3. Wei Yang
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Correspondence to Yi Gong.

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Xu, C., Gong, Y. & Yang, W. High-rate Complex Orthogonal Space-time Block Codes for 5 and 6 Transmit Antennas. Wireless Pers Commun 49, 263–274 (2009). https://doi.org/10.1007/s11277-008-9571-5

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  • DOI: https://doi.org/10.1007/s11277-008-9571-5

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