Energy Efficiency and Goodput Analysis in Two-Way Wireless Relay Networks

Author

Chen, Qing ; Gursoy, Mustafa Cenk

Author_Institution

Dept. of Electr. Eng., Univ. of Nebraska-Lincoln, Lincoln, NE, USA

fYear

2011

fDate

July 31 2011-Aug. 4 2011

Firstpage

1

Lastpage

6

Abstract

In this paper, we study two-way relay networks (TWRNs) in which two source nodes exchange their information via a relay node indirectly in Rayleigh fading channels. Both Amplify-and-Forward (AF) and Decode-and-Forward (DF) techniques have been analyzed in the TWRN employing a Markov chain model through which the network operation is described and investigated in depth. Automatic Repeat-reQuest (ARQ) retransmission has been applied to guarantee the successful packet delivery. The bit energy consumption and goodput expressions have been derived as functions of transmission rate in a given AF or DF TWRN. Numerical results are used to identify the optimal transmission rates of which the bit energy consumption is minimized or the goodput is maximized. The network performances are compared in terms of energy and transmission efficiency in AF and DF modes.

Keywords

Markov processes; Rayleigh channels; amplify and forward communication; automatic repeat request; decode and forward communication; energy conservation; radio networks; Markov chain model; Rayleigh fading channels; amplify-and-forward; automatic repeat-request; bit energy consumption; decode-and-forward; energy efficiency; goodput analysis; goodput expressions; two-way relay networks; two-way wireless relay networks; Automatic repeat request; Broadcasting; Decoding; Energy consumption; Markov processes; Relays; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Communications and Networks (ICCCN), 2011 Proceedings of 20th International Conference on

Conference_Location

Maui, HI

ISSN

1095-2055

Print_ISBN

978-1-4577-0637-0

Type

conf

DOI

10.1109/ICCCN.2011.6006276

Filename

6006276