Network Coding in Wireless Networks: A Survey
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The Network Coding evolved recently is an important breakthrough in field of communications. The basic concept of Network Coding is that intermediate nodes in the network not only forward but also process the incoming information flows, which results in significant benefits. In fact, wireless networks are a most natural setting for Network Coding because the very characteristics of wireless links that complicate routing, namely, their unreliability and broadcast nature, are the very characteristics for which coding is a natural solution. This paper firstly overviews the development of Network Coding, and then summarizes its latest research in wireless ad hoc networks, wireless sensor networks and wireless mesh networks. In conclusion, we point out its future direction based on the analysis and remark of problems remaining unsolved in wireless networks.