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Multi-Hop Transmission Performance of Cognitive Temporary Bypassing for Wireless Ad Hoc Networks

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3 Author(s)
Kenichi Nagao ; Adv. Wireless Commun. Res. Center, Univ. of Electro-Commun., Chofu ; Yusuke Kadowaki ; Yasushi Yamao

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.

Published in:

2009 6th IEEE Consumer Communications and Networking Conference

Date of Conference:

10-13 Jan. 2009