Gaussian many-access channels: Definition and symmetric capacity

Xu Chen, Dongning Guo

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

12 Scopus citations

Abstract

This paper studies communication networks with a very large number of users simultaneously communicating with an access point. A new notion of many-access channel (MnAC) is introduced, which is the same as a multiaccess channel except that the number of users increases unboundedly with the coding block length. Unlike the conventional multiaccess channel with a fixed number of users, the joint typicality decoding technique is not directly applicable to establish the achievability of the capacity. It is shown that, as long as the number of users grows sublinearly with the coding block length, random coding with Feinstein's threshold decoding is sufficient to achieve the symmetric capacity of the Gaussian MnAC.

Original languageEnglish (US)
Title of host publication2013 IEEE Information Theory Workshop, ITW 2013
DOIs
StatePublished - Dec 1 2013
Event2013 IEEE Information Theory Workshop, ITW 2013 - Seville, Spain
Duration: Sep 9 2013Sep 13 2013

Publication series

Name2013 IEEE Information Theory Workshop, ITW 2013

Other

Other2013 IEEE Information Theory Workshop, ITW 2013
CountrySpain
CitySeville
Period9/9/139/13/13

ASJC Scopus subject areas

  • Information Systems

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  • Cite this

    Chen, X., & Guo, D. (2013). Gaussian many-access channels: Definition and symmetric capacity. In 2013 IEEE Information Theory Workshop, ITW 2013 [6691257] (2013 IEEE Information Theory Workshop, ITW 2013). https://doi.org/10.1109/ITW.2013.6691257