Title :
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
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;
Conference_Titel :
Computer Science and Electronic Engineering Conference (CEEC), 2012 4th
Conference_Location :
Colchester
Print_ISBN :
978-1-4673-2665-0
DOI :
10.1109/CEEC.2012.6375398
