| Some researchers had confirmed that the NC (network coding) can enhance the information transfer rate, have the advantages of improving network reliability and preventing attacks, etc. In recent years, the application of network coding in a variety of network scenarios has become a hot research topic. In order to use the advantages of the network coding and channel coding simultaneously, this paper proposed a Joint Scheme of channel coding and network coding in a wireless network.In two-way relay networks (TWRNs), the relay node has to determine a particular broadcast rate for coded packets transmission as the selected rate should be supported on the worst quality links to the intended receivers. Thus, the throughput gain brought by network coding is limited by capacity of the worst link in TWRNs. This paper use a rate diverse network coding (RDNC) scheme, the relay node can selected the higher rate and demodulate the received information correctly. This paper also carried out deep-research in the Joint Scheme of channel coding and network coding in a wireless network.The content of this thesis is as follows:Firstly, study the principles and applications of channel coding, network coding and physical-layer network coding. Analyze the coding and decoding theory of convolutional codes and Turbo code. Then analyze the broadcast bottleneck problem in TWRNs, to provide a theoretical basis for the design of the follow-up program. Second, research the channel coding and PNC joint technology in symmetric rate channels and asymmetric rate channel. Propose a t network coding scheme in the asymmetric rate channel.Third, propose a joint design of convolutional codes and network coding. Than proposed a further design of Tubro codes and network coding. What’s more, give a detailed analysis of this scheme.Fourth, give the corresponding simulation results to verify the practicability of the scheme.Finally, give future research directions and the follow-up plan. |
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