Cooperative Transmission in a Wireless Relay Network Based on Flow Management

Author

Chatterjee, Debdeep ; Wong, Tan F. ; Lok, Tat M.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA

Volume

58

Issue

10

fYear

2010

fDate

10/1/2010 12:00:00 AM

Firstpage

2816

Lastpage

2822

Abstract

Cooperative transmission protocols using a flow optimization approach for a general multi-node half-duplex wireless relay network are presented. The proposed design involves solving a convex flow optimization problem on a graph that models the relay network. Two protocols are developed using the techniques of broadcasting (BC), multiple-access (MA), and time sharing (TS), and both are shown to achieve the optimal diversity-multiplexing tradeoff (DMT). Simulation results are used to quantify the performances of the proposed protocols in terms of outage probabilities, and to compare them against the max-flow-min-cut bound.

Keywords

access protocols; diversity reception; graph theory; optimisation; radio networks; radio spectrum management; cooperative transmission protocols; flow optimization problem; graph models; max-flow-min-cut bound; multinode half-duplex wireless relay network; multiple access protocols; network flow management; optimal diversity multiplexing tradeoff; outage probabilities; time sharing; Gain; Optimization; Protocols; Relays; Signal to noise ratio; Upper bound; Wireless communication; Cooperative communication; convex optimization; diversity-multiplexing tradeoff; wireless relay network;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2010.083110.080395

Filename

5567181