A MANET multipath routing algorithm based on network coding

Most of current studies on Ad Hoc network use redundant transmission to ensure reliability of data transmission, such as multi-path or retransmission. The size of redundant transmission decides whether multipath transmission is efficient or not. Network coding technology provides a method which can effectively reduce the size of redundant transmission on multi-path traffic. Given Ad Hoc networks' features, we establish a multi-path data transmission model and apply the linear random network coding method to it. Then, we propose a practical network coding scheme, complete code design of the network coding part, and successful implement the network coding/decoding process on qualnet5.0. Several comparative experiments are completed. The simulation results show that the improved protocol has significantly reduced the amount of 40% standard redundancy so as to improve network communication capacity.