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Optimal HDA codes for sending a Gaussian source over a Gaussian channel with bandwidth compression in the presence of an interference

Varasteh, M ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1109/ITW.2011.6089472
  3. Publisher: 2011
  4. Abstract:
  5. In this paper, we consider transmission of a Gaussian source over a Gaussian channel under bandwidth compression in the presence of interference known only to the transmitter. We study hybrid digital-analog (HDA) joint source-channel coding schemes and propose two novel coding schemes that achieve the optimal mean-squared error (MSE) distortion. This can be viewed as the extension of results by Wilson et al. [1], originally proposed for sending a Gaussian source over a Gaussian channel in two cases: 1) Matched bandwidth with known interference only at the transmitter, 2) bandwidth compression where there is no interference in the channel. The proposed HDA codes can cancel the interference of the channel and obtain the "optimum" performance theoretically "attainable" (OPTA) of the AWGN channel with no interference in the case of bandwidth compression. We also provide performance analysis in the presence of signal-to-noise ratio (SNR) mismatch where we expect that HDA schemes perform better than strictly digital schemes
  6. Keywords:
  7. AWGN channel ; Hybrid digital-analog coding ; Writing on dirty paper coding ; Coding scheme ; Gaussian channels ; Gaussian sources ; Joint source-channel coding ; Mean squared error ; Performance analysis ; Signal-to-noise ratio mismatches ; Bandwidth ; Channel coding ; Codes (symbols) ; Directive antennas ; Gaussian distribution ; Optimization ; Signal to noise ratio ; Transmitters ; White noise ; Bandwidth compression
  8. Source: 2011 IEEE Information Theory Workshop, ITW 2011 ; 2011 , Pages 325-329 ; 9781457704376 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6089472