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Transmission Mode Switching for Device-to-Device Communication Aided by Relay Node
NI Yi-Yang 1, QIAO Dan 2, LI Xiao 2, JIN Shi 2, ZHU Hong-Bo 1
1. Jiangsu Key Laboratory of Wireless Communications
2. National Mobile Communications Research Laboratory, Southeast University
*Correspondence author
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Funding: Specialized Research Fund for the Doctoral Program of Higher Education (No.20110092120014)
Opened online:12 June 2014
Accepted by: none
Citation: NI Yi-Yang, QIAO Dan, LI Xiao.Transmission Mode Switching for Device-to-Device Communication Aided by Relay Node[OL]. [12 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4599733
 
 
In this paper, we investigate the strategy of transmission mode switching for device-to-device (D2D) communication in both single-cell scenario and multi-cell scenario, which selects the transmission mode to guarantee the maximum ergodic achievable sum-rate among three transmission modes. We first introduce the basic operation principles of three communication transmission modes which are named as traditional cellular communication mode, direct D2D communication mode and two-way DF relayed D2D communication mode. Then we derive the corresponding expressions for the ergodic achievable sum-rates of each transmission mode, and get the crossing points of different transmission modes to attain maximum ergodic achievable sum-rate of the system. From the analytical results, we can see that the proper operating region of each transmission mode is related to different interference level and distance of the D2D users. Based on the analytical results, we obtain a reliable communication transmission mode switching strategy which guarantees the system to choose the mode with the maximum ergodic achievable sum-rate so as to improve the performance of D2D communication. Numerical results demonstrate that by applying mode switching, the ergodic achievable sum-rate of the system achieves a remarkable enhancement.
Keywords:Communication technology; D2D communication; two-way relay; transmission mode switching; ergodic achievable sum-rate.
 
 
 

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