Wireless Network Coding via Modified 802.11 MAC/PHY: Design and Implementation on SDR
Mohammad H. Firooz, Zhiyong Chen, Sumit Roy, and Hui Liu

TL;DR
This paper proposes practical modifications to the 802.11 MAC and PHY layers on SDR platforms to enable wireless network coding, demonstrating a throughput increase of 20-30% through lab experiments.
Contribution
It introduces novel, pragmatic modifications to 802.11 MAC/PHY layers on SDR to support wireless network coding and evaluates their effectiveness experimentally.
Findings
Network coding increases throughput by 20-30%.
Modifications enable practical implementation of WNC on SDR.
Lab experiments validate the throughput gains.
Abstract
Network coding (NC), in principle, is a Layer-3 innovation that improves network throughput in wired networks for multicast/broadcast scenarios. Due to the fundamental differences between wired and wireless networks, extending NC to wireless networks generates several new and significant practical challenges. Two-way information exchange (both symmetric and asymmetric). Network coding (NC), in principle, is a Layer-3 innovation that improves network throughput in wired networks for multicast/broadcast scenarios. Due to the fundamental differences between wired and wireless networks, extending NC to wireless networks generates several new and significant practical challenges. Two-way information exchange (both symmetric and asymmetric) between a pair of 802.11 sources/sinks using an intermediate relay node is a canonical scenario for evaluating the effectiveness of Wireless Network…
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