Coding for the MIMO ARQ block-fading channel with imperfect feedback and CSIR

A. Taufiq Asyhari, Albert Guillen I Fabregas

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

1 Citation (Scopus)

Abstract

We investigate the effects of imperfect channel knowledge and feedback in incremental-redundancy automatic-repeat request (INR-ARQ) coding systems over multiple-input multiple-output (MIMO) block-fading channels. We propose an ARQ decoder based on nearest neighbour decoding and evaluate the corresponding achievable rates. We then derive the optimal code diversity assuming that the feedback channel is modelled as a binary symmetric channel. Our main results show that the feedback link reliability must improve with the forward (transmission) signal-to-noise ratio (SNR) for the code to exploit the diversity offered by ARQ scheme. We also identify the conditions for achieving full diversity and for ARQ not helping in improving the system's diversity.

Original languageEnglish
Title of host publication2010 IEEE Information Theory Workshop, ITW 2010 - Proceedings
PublisherIEEE
Number of pages5
ISBN (Print)9781424482641
DOIs
Publication statusPublished - 1 Dec 2010
Externally publishedYes
Event2010 IEEE Information Theory Workshop, ITW 2010 - Dublin, Ireland
Duration: 30 Aug 20103 Sep 2010

Workshop

Workshop2010 IEEE Information Theory Workshop, ITW 2010
CountryIreland
CityDublin
Period30/08/103/09/10

Keywords

  • Automatic repeat request
  • Decoding
  • Signal to noise ratio
  • MIMO
  • Error probability
  • Fading
  • Encoding

ASJC Scopus subject areas

  • Information Systems
  • Applied Mathematics

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  • Cite this

    Asyhari, A. T., & I Fabregas, A. G. (2010). Coding for the MIMO ARQ block-fading channel with imperfect feedback and CSIR. In 2010 IEEE Information Theory Workshop, ITW 2010 - Proceedings [5592842] IEEE. https://doi.org/10.1109/CIG.2010.5592842