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A Simple Differential Modulation Scheme for Quasi-Orthogonal Space-Time Block Codes with Partial Transmit Diversity

EURASIP Journal on Wireless Communications and Networking volume 2007, Article number: 097475 (2007) Cite this article

Abstract

We report a simple differential modulation scheme for quasi-orthogonal space-time block codes. A new class of quasi-orthogonal coding structures that can provide partial transmit diversity is presented for various numbers of transmit antennas. Differential encoding and decoding can be simplified for differential Alamouti-like codes by grouping the signals in the transmitted matrix and decoupling the detection of data symbols, respectively. The new scheme can achieve constant amplitude of transmitted signals, and avoid signal constellation expansion; in addition it has a linear signal detector with very low complexity. Simulation results show that these partial-diversity codes can provide very useful results at low SNR for current communication systems. Extension to more than four transmit antennas is also considered.

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Authors and Affiliations

  1. UniK, University of Oslo, P.O. Box 70, Kjeller, 2007, Norway

    Lingyang Song

  2. Department of Electronics, University of York, Heslington, York, YO10 5DD, UK

    Alister G. Burr

Authors
  1. Lingyang Song
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  2. Alister G. Burr
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Correspondence to Lingyang Song.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Song, L., Burr, A.G. A Simple Differential Modulation Scheme for Quasi-Orthogonal Space-Time Block Codes with Partial Transmit Diversity. J Wireless Com Network 2007, 097475 (2007). https://doi.org/10.1155/2007/97475

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  • DOI: https://doi.org/10.1155/2007/97475

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