Research Of The Application Of Coded Modulation Scheme In Physical Network Coding

In recent years,The progress of communication has brought lots of joys to the people.However, people put forward higher requirements to the wireless network, no matter where,people want to enjoy the convenience and fun brought by the Internet every moment of theday. In order to meet the desire of the people and solve the problems for people, improvingthe data transfer rate and spectrum utilization of the network has become the current urgentproblem. In2006, the idea of PNC was raised, It has provides a easy condition for theimproving of the maximum data transfer rate of network.The PNC was applied in thewireless communication network at first. In order to improve the noise resistant of thewireless channel, the combination of the PNC、 channel coding technology and modulationtechnology as the main research direction.In this paper, according to the present situation of PNC and coding modulationtechnology, I mainly studied the following contents:Firstly, In this paper, the principle and implementation technology of the PNC areintroduced detailedly; and give a summarize for the problem existing in the implementationprocess of the PNC; at last, I look forward the trend of the development of the physicallayer network coding.Secondly, in this paper, I study the joint design of the T-TCM and PNC, the codeprinciple and algorithms of Turbo code are introduced; on the basis of joint design of aTCM code and PNC,I put forward a new scheme--the joint design of T-TCM andPNC,Which is the focus in this paper, and the diagram of this solution is studied, finally,the simulation proves that this scheme can obtain better performance in wireless two-wayrelay channel.Thirdly, in this paper, the joint design of another good channel error correctioncode-LDPC code and PNC are studied. In this chapter, firstly the structure of the coder andthe decoding algorithm of LDPC code are introduced, and give a detailed study to theapplication of LDPC-CM in PNC, at last,through the simulation analysis the performanceof the mechanism.Finally I summarize the work of this paper, and I also analysis the question existing inthe writing of this paper, at last, I put forward the research direction of PNC.