Performance Analysis of Network Coding with IEEE 802.11 DCF in Multi-Hop Wireless Networks
Somayeh Kafaie, Mohamed Hossam Ahmed, Yuanzhu Chen, Octavia A. Dobre

TL;DR
This paper develops an analytical model using queuing theory to evaluate throughput and delay of network coding in multi-hop wireless networks based on IEEE 802.11 DCF, validated by simulations.
Contribution
It introduces a novel queuing theory framework for analyzing network coding performance in IEEE 802.11 multi-hop wireless networks.
Findings
Model accurately predicts throughput and delay metrics.
Network coding improves network capacity and reduces delays.
Validation confirms the model's effectiveness across various scenarios.
Abstract
Network coding is an effective idea to boost the capacity of wireless networks, and a variety of studies have explored its advantages in different scenarios. However, there is not much analytical study on throughput and end-to-end delay of network coding in multi-hop wireless networks considering the specifications of IEEE 802.11 Distributed Coordination Function. In this paper, we utilize queuing theory to propose an analytical framework for bidirectional unicast flows in multi-hop wireless mesh networks. We study the throughput and end-to-end delay of inter-flow network coding under the IEEE 802.11 standard with CSMA/CA random access and exponential back-off time considering clock freezing and virtual carrier sensing, and formulate several parameters such as the probability of successful transmission in terms of bit error rate and collision probability, waiting time of packets at…
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