Reliable uncoded communication in the SIMO MAC via low-complexity decoding

Author

Chowdhury, Mashrur ; Goldsmith, Andrea ; Weissman, Tsachy

Author_Institution

Dept. of Electr. Eng., Stanford Univ., Stanford, CA, USA

fYear

2013

fDate

7-12 July 2013

Firstpage

1645

Lastpage

1649

Abstract

We consider a multiple access channel with a large number of transmitters sending symbols from a constellation to the receiver of a multi-antenna base station. We investigate the joint decoding of the signals from all the users using a low complexity convex relaxation of the maximum likelihood decoder (constellation search). We show that, in a rich scattering environment, and in the asymptotic limit of a large number of transmitters, reliable communication is possible even without employing coding at the transmitters.

Keywords

channel coding; maximum likelihood decoding; multi-access systems; telecommunication network reliability; SIMO MAC; asymptotic limit; constellation search; joint decoding; low complexity convex relaxation; low-complexity decoding; maximum likelihood decoder; multiantenna base station; multiple access channel; reliable communication; scattering environment; transmitter; Encoding; Error probability; Maximum likelihood decoding; Receivers; Reliability; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on

Conference_Location

Istanbul

ISSN

2157-8095

Type

conf

DOI

10.1109/ISIT.2013.6620506

Filename

6620506