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Wireless network coding via modified 802.11 mac/phy: design and implementation on sdr.
| Content Provider | CiteSeerX |
|---|---|
| Author | Firooz, Mohammad H. Chen, Zhiyong Roy, Sumit Liu, Hui |
| Abstract | 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) between a pair of 802.11 sources/sinks using an intermediate relay node is a canonical scenario for evaluating the effectiveness of Wireless Network Coding (WNC) in a practical setting. Our primary objective in this work is to suggest pragmatic and novel modifications at the MAC and PHY layers of the 802.11 protocol stack on a Software Radio (SORA) platform to support WNC and obtain achievable throughput estimates via lab-scale experiments. Our results show that network coding (at the MAC or PHY layer) increases system throughput-typically by 20−30%. Index Terms—Wireless network coding, joint modulation, decode-and-forward, PHY network coding, MAC-layer network coding, OFDM systems. I. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Wireless Network Coding Mac Phy Phy Layer Protocol Stack Network Coding Ofdm System Wired Network Canonical Scenario Two-way Information Exchange Intermediate Relay Node Fundamental Difference Layer-3 Innovation Practical Setting Wireless Network Significant Practical Challenge Novel Modification Multicast Broadcast Scenario Mac-layer Network Coding Lab-scale Experiment Index Term Wireless Network Coding Achievable Throughput Estimate Abstract Network Phy Network Joint Modulation Software Radio Network Throughput Primary Objective |
| Content Type | Text |
