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A New Semiblind Scheme Based on Second and Fourth Order Statistics for Decoding of Space–Time Data in Time Selective MIMO Channels

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Abstract

In this paper we propose a novel semiblind scheme based on second and fourth order statistics of Space–Time data in time varying MIMO channels. This scheme combines a new blind estimator of frequency offsets and an iterative decoder. Space–Time Codes have a periodic property which is used to find a simple and efficient blind estimator of carrier offsets. The iterative decoder is a data aided decoder which provides the best estimates of channel, noise co-variance and S–T data in its category. As a result of this the new semiblind scheme performs very efficiently in time-selective channels and is able to reduce the training overhead required by the data-aided estimators to a large extent, and increase the effective throughput.

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Authors and Affiliations

  1. UniK-University Graduate Center, University of Oslo, Kjeller, 2027, Norway

    Manav R. Bhatnagar

  2. Department of Electrical and Computer Engineering, University of California, Davis, CA, 95616, USA

    R. Vishwanath

Authors
  1. Manav R. Bhatnagar
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  2. R. Vishwanath
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Correspondence to Manav R. Bhatnagar.

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Bhatnagar, M.R., Vishwanath, R. A New Semiblind Scheme Based on Second and Fourth Order Statistics for Decoding of Space–Time Data in Time Selective MIMO Channels. Wireless Pers Commun 47, 193–205 (2008). https://doi.org/10.1007/s11277-008-9454-9

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  • DOI: https://doi.org/10.1007/s11277-008-9454-9

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