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Optimizing Throughput and Reliability by Piggybacking Retransmissions in Network Coding
In wireless networks due to the presence of unreliable links, efficiency and overall network performance degrades. To ensure the reliable end to end transmission, lost packets are retransmitted. Network coding improves the efficiency of network but susceptible to pollution attack in the presence of malicious nodes and links. The main concern of this paper is to limit the pollution attack by identifying malicious nodes and isolating it from the network so that the system can quickly recover from attackers Simulation shows that the proposed protocol OTRPR-NC routes the coded packets through the best possible path of the malicious network and minimizes the average no. of transmissions. It also optimizes the packet buffering, Network reliability and Retransmission time as compared to IPDR and ONCBT algorithms.
Keywords
Wireless Networks, Optimization, Multicasting, Network Coding, Encoding, Coding Gain.
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