Qiong Huang, Ming-jing Ni, Lun Tang, Rong Chai, Qianbin Chen
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Relay protocol improvement and frame structure design base on overhearing mechanism and physical network coding
Under the background of TDD mode and LTE-Advanced scene, in this paper, we combine physical network coding with relay technology in order to make physical network coding-decode and forward(PNC-DF)together with physical network coding-amplify and forward(PNC-AF)transfer mode can be used to improve network throughput by using interference. Because of the ability to listen to the multi-user relay service, we need to optimize and select user group of physical network coding. In this paper, we use over-hearing mechanism in order to optimize user group, even more we also need to improve the department of transport protocol on delay. At last, depending on improved transport protocol, we design two kinds of frame structure which could adapt to improved transfer model. The simulation result shows that PNC-DF and PNC-AF with over-hearing mechanism could reduce the bit error rate.