Typical behavior of relays in communication channels

Alamino, Roberto C. and Saad, David Typical behavior of relays in communication channels. Physical Review E, 76 (6), pp. 1-8.


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: Engineering & Applied Sciences > Mathematics
Engineering & Applied Sciences > Non-linearity and complexity research group
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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)



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