The Implement And Improvement Of Muti-Generation Mixing Network Coding

Network coding was proposed in2000, and regarded as a main breakthrough in the field of telecommunication. Unlike the conventional communication network, the relay nodes are permitted to encode the received data before sending them out instead of forwarding them only. So that under bandwidth limited communication network, the system can achieve a greater transmission rate or a greater network throughput.While improving the throughput of a network system, it also suffers from some deficiencies. The most significant among them is that due to the packet loss problem in the network, a small amount of packet loss will cause the decoding failure of associated large amount of encoded packets. Therefore, to reduce the impact of packet loss is a hot issue in network coding field.P2P network means peer-to-peer nodes communicate with each other through a cloud of intermediate nodes without the control of a central server. Since each node in a P2P network has the same status and communicate with each other through forwarding facility of intermediate nodes, it is a suitable scene to implement network coding.In this paper, to improve the performance of traditional network coding, we move the idea of Muti-Generation Mixing Network Coding to implement under a P2P network system model. And in the same time, we proposed an improved method to further improve the system performance in three respects:decoding time delay, calculation complexity, and transmission scale. Through the simulation under a P2P network system model, we proved the improvement of the proposed method.