Network Coding Scheme With Restricted Number Of Coding Nodes

Network Coding is a novel network technology introduced in recent years. With network coding, the intermediate nodes are allowed to encode the received messages rather than only storing and forwarding messages. As an important research area in communication and network, network coding can improve transmission rate and transmission performance in bandwidth constrained channels. Furthermore, by using network coding, network resources are fully utilized, and the transmission rate is even reach to the upper limit of the multicast capacity of the network.However, using network coding requires that intermediate nodes equipped the hardware with network coding capability. Hence, the usage of network coding is restrained to the device of the network hardware. How to apply network coding with low cost is one of critical problems in the application of network coding.This thesis first introduces the basic theory of network coding and algebraic network coding. Then, the model of a single source node multicast is given, and the extended model is also introduced. The transmission performance with restricted number of coding nodes is investigated. Finally, an universal multicast transmission network generation method is proposed. The simulation results validate the proposed method.