Dissertation > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Mobile Communications

Cooperative Communication Based on Coding

Author MengHaiFang
Tutor MeiZhongHui
School Nanjing University of Posts and Telecommunications
Course Signal and Information Processing
Keywords Collaborative communication Amplify and forward Decode and Forward Coded Cooperation Network coding Repeat accumulate code
CLC TN929.5
Type Master's thesis
Year 2012
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The cooperative communication technology is a new type of space diversity technique , the user node in the process of transmission of information , using collaborative partners channel, shared antenna with each other , to form a virtual MIMO array , so as to obtain diversity gain , and improve system performance . The network coding technique through the communications and network coding in a relay node of the signal processing to improve the link reliability and network throughput of the wireless link , and provides an effective way to solve the multi-hop wireless network , the relay transmission bottlenecks will collaborate both considering it is a very natural thing . At the same time , now there are a large number of more mature channel codec technology can be applied directly , in turn, can improve the reliability of the wireless link link , thus different channel codec theory and collaborative communication technologies caused widespread concern . The first collaborative communication technology and the basic model , introduced the concept of cooperative communications technology , three classic collaborative communication model : zoom forwarding ( AF ) , decode forward (DF) and coding Collaboration ( CC ) and outage probability analysis , another three common improvements to enhance the relay model , one of the hot issues and collaborative communication relay selection strategy . Secondly, the basic principle of network coding technology , a detailed analysis of several different collaborative network coding model , relaying way collaborative model to analyze the performance of the different models . In the Bidirectional Forwarding collaboration network coding model , proposed a new relay distribution program , this program is to minimize the bit error rate performance for the target , can well improve system performance , in the case of direct transmission link between users consider , and this program is randomly assigned and existing relay allocation scheme comparative analysis , simulation confirmed that this scheme can effectively improve the system performance , and the program has a lower computational complexity . Finally , collaborative communications research based on repeat accumulate codes (RA) . RA codes have been proposed as one kind of \network coding techniques used in joint collaboration communication system model and simulation analysis .

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