Energy efficient transmission power estimation for WLAN VoIP

Author

Mobin, Iftekharul ; Mondragon, Raul J. ; Khan, Mohammad Monirujjaman

Author_Institution

Sch. of Electron. Eng. & Comput. Sci., Queen Mary Univ. of London, London, UK

fYear

2012

fDate

12-13 Sept. 2012

Firstpage

164

Lastpage

168

Abstract

In this paper transmission signal power is optimized to increase the energy efficiency of Wireless Local Area Network (WLAN) Voice over IP (VoIP) application. We investigate how to optimize the transmission power without degrading the VoIP Quality of Service (QoS). A Transmission Power Optimization (TPO) algorithm is presented to adopt lowest possible transmission power that does not interrupt the VoIP service quality and increases energy efficiency as well. Extensive analysis is done in Network Simulator-2 (NS-2) [1] to estimate the optimal transmission power for various channel condition. According to our simulation results and analysis it is observed that the optimal transmission power increases the energy efficiency and improves the VoIP performance significantly.

Keywords

Internet telephony; quality of service; wireless LAN; NS-2; Network Simulator-2; QoS; WLAN VoIP; energy efficient transmission power estimation; optimal transmission power estimation; quality of service; transmission power optimisation; transmission power optimization algorithm; transmission signal power optimisation; voice over IP; wireless local area network; Bit error rate; Equations; Signal to noise ratio; Wireless LAN; NS-2; QoS; VoIP; WLAN; energy efficiency; power control; wireless networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Electronic Engineering Conference (CEEC), 2012 4th

Conference_Location

Colchester

Print_ISBN

978-1-4673-2665-0

Type

conf

DOI

10.1109/CEEC.2012.6375398

Filename

6375398