Research Of Network Coding Technology In Cooperation Communication

Because both cooperation communication technology and network coding technology are all toemphasize the coordination between nodes, so combining the two techniques has become a kind ofnew research tendency. At the same time, because the channel coding and decoding technology isrelatively mature, so combine different channel knitting decoding theory with collaborativecommunication technology also caused a wide public concern.First of all, this paper expounds the basic concept of cooperative diversity and its keytechnologies, including diversity technology which the sending end uses, and merge technologythat the receiving end uses. Then it presentations the basic principle of cooperative communication,also analyses and compares three kinds of collaborative communication strategy, includingamplification forwarding strategy, decoding forwarding strategy and coding cooperation strategy.Secondly, it introduces the basic concept and operating principle of the network coding, andanalyzes its the advantages. Then it presentations the polynomial time algorithm aiming at networkcoding algorithm, and proposes a new polynomial time algorithm, which use Floyd algorithm tocalculate the shortest path matrix from the source to the destination, in order to reduce bandwidthconsumption and increase the balanced load. Later on, it draws network coding into the one-waycollaboration communication and two-way cooperation communication. In the meantime, this paperanalyzes and compares the interrupt probability of the two kinds of model.Finally, this paper discusses the cooperation communication system based on theconvolution-network coding. It introduces the basic concept of convolution code and its threemethods of description in advance. Then depending on the grid foundation, we studies the Viterbidecoding algorithm. After that, this paper combine the convolution code, network coding andcooperative communication, to design a kind of single relay unidirectional collaborativecommunication system based on convolution-network coding, and single relay two-waycooperation communication system based on convolution-network coding. Later we make differentsimulation analysis on the two kind of new system. Experimental results show that under thecondition of the same SNR, the bit error rate of the two new system declines more quickly, so thesystem performance is improved.