D2D通信中最优功率分配和最佳中继选择

doi:10.3969/j.issn.1001-2400.2017.04.002

Abstract

Abstract:

Cellular users can be regarded as relay nodes in cooperation with the Device-to-Device (D2D)communication so as to lower the cost, improve spectrum efficiency and solve the problems of network coverage, as well as improving service quality. In this paper an optimal power allocation and optimal relay selection algorithm based on network coding is proposed for using cellular users in the bidirectional relay nodes system. By fixing the total power of the D2D link to be transmitted, this algorithm optimizes the transmission power of each node, and selects the relay node which can maximize the channel capacity of the D2D link as the best relay node. Simulation results show that compared with other protocols, the proposed protocol can significantly improve the channel capacity of the D2D link.

Key words: device-to-device, power, relay, channel capacity

GUO Yi;LV Yuxuan;LIU Gang;YANG Shiyong. Optimal power allocation and optimal relay selection for D2D communication[J].Journal of Xidian University, 2017, 44(4): 7-11+180.

References

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Optimal power allocation and optimal relay selection for D2D communication

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