Title :
Multi-Hop Transmission Performance of Cognitive Temporary Bypassing for Wireless Ad Hoc Networks
Author :
Nagao, Kenichi ; Kadowaki, Yusuke ; Yamao, Yasushi
Author_Institution :
Adv. Wireless Commun. Res. Center, Univ. of Electro-Commun., Chofu
Abstract :
In wireless ad hoc networks, the link SNR varies due to fading and this causes a temporary link error and blocks the multi-hop packet transmission. The cognitive temporary bypassing method was proposed to improve the transmission quality. In this paper, the proposed protocol is improved by adding acknowledgement and anti-collision functions necessary to achieve reliable multi-hop transmission. Packet success probability with the improved method has been analyzed for Rayleigh faded wireless links as functions of hop count. Simulation results using a modified QualNet simulator validate that packet success probability is remarkably improved with the method for maximum Doppler frequencies up to 30 Hz.
Keywords :
ad hoc networks; probability; radio links; telecommunication network reliability; QualNet simulator; Rayleigh faded wireless links; anticollision functions; cognitive temporary bypassing; link error; maximum Doppler frequencies; multihop transmission performance; multihop transmission reliability; packet success probability; protocol; transmission quality improvement; wireless ad hoc networks; Analytical models; Error probability; Fading; Mobile ad hoc networks; Monitoring; Protocols; Routing; Signal to noise ratio; Spread spectrum communication; Time domain analysis;
Conference_Titel :
Consumer Communications and Networking Conference, 2009. CCNC 2009. 6th IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-2308-8
Electronic_ISBN :
978-1-4244-2309-5
DOI :
10.1109/CCNC.2009.4784701
