Evaluating the Performance of Modified DSR in Presence of Noisy Links Using QUALNET Network Simulator in MANET

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Executive Summary

For routing in MANET, finding the shortest path between nodes based on the classical hop-count metric may not always be the best routing criteria to be considered because the shortest path might be congested or error prone due to noisy interference leading to poor network throughput and packet delivery ratio. In the authors' work, they use Signal-to-Noise Ratio (SNR) as the link-quality metric in a modified version of the of DSR protocol coined as MDSR which takes into consideration the SNR value of a wireless link in addition to the hop count metric to discover new routes.

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