The Multiple Access Channel with Feedback and Correlated Sources

Author

Ong, Lawrence ; Motani, Mehul

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore

fYear

2006

fDate

9-14 July 2006

Firstpage

2129

Lastpage

2133

Abstract

In this paper, we investigate communication strategies for the multiple access channel with feedback and correlated sources (MACFCS). The MACFCS models a wireless sensor network scenario in which sensors distributed throughout an arbitrary random field collect correlated measurements and transmit them to a common sink. We derive achievable rate regions for the three-node MACFCS. First, we study the strategy when source coding and channel coding are combined, which we term full decoding at sources. Second, we look at several strategies when source coding and channel coding are separated, which we term full decoding at destination. From numerical computations on Gaussian channels, we see that different strategies perform better under certain source correlations and channel setups

Keywords

Gaussian channels; combined source-channel coding; correlation methods; decoding; multi-access systems; wireless sensor networks; Gaussian channels; arbitrary random field; channel coding; decoding; multiple access channel with feedback and correlated sources; sensors distributed throughout; source coding; wireless sensor network scenario; Channel coding; Decoding; Echo cancellers; Feedback; Gaussian channels; Random variables; Source coding; Time division multiple access; Wireless sensor networks; Yttrium;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2006 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

1-4244-0505-X

Electronic_ISBN

1-4244-0504-1

Type

conf

DOI

10.1109/ISIT.2006.261927

Filename

4036345