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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
Downloads: 60
Quote: 0
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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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