Typical behavior of relays in communication channels


The typical behavior of the relay-without-delay channel under low-density parity-check coding and its multiple-unit generalization, termed the relay array, is studied using methods of statistical mechanics. A demodulate-and- forward strategy is analytically solved using the replica symmetric ansatz which is exact in the system studied at Nishimori's temperature. In particular, the typical level of improvement in communication performance by relaying messages is shown in the case of a small and a large number of relay units. © 2007 The American Physical Society.

Publication DOI: https://doi.org/10.1103/PhysRevE.76.061124
Divisions: College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Additional Information: Copyright of the American Physical Society.
Uncontrolled Keywords: statistical physics,replica theory,relay channel,LDPC codes,Mathematical Physics,Condensed Matter Physics,Statistical and Nonlinear Physics,Physics and Astronomy(all)
Publication ISSN: 1550-2376
Last Modified: 24 Jan 2024 08:04
Date Deposited: 11 Jan 2010 13:40
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://link.aps ... sRevE.76.061124 (Publisher URL)
PURE Output Type: Article
Published Date: 2007-12-21
Authors: Alamino, Roberto C. (ORCID Profile 0000-0001-8224-2801)
Saad, David (ORCID Profile 0000-0001-9821-2623)



Version: Accepted Version

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