D2D通信的干扰控制和资源分配算法研究

doi:10.11959/j.issn.1000-436x.2018240

Abstract

Abstract:

In order to solve the problem of interference caused by D2D users reuse cellular resources in cellular network,an algorithm of interference control and resource allocation of D2D communication in single cell cellular system was proposed.Firstly,an interference graph was constructed according to the interference between users in the system to find the reusable channel resource for D2D users.Then,the channel resource pre-allocation and the channel switching policy were performed for D2D users in sequence according to the preset D2D user priority.The simulation results show that the proposed algorithm can significantly improve the system throughput and the access rate of D2D users so that the system can achieve better performance in the presence of small or large number of D2D users.

Key words: D2D communication, interference control, resource allocation, channel exchange

CLC Number:

TN92

Kangkang FAN,Ying DONG,Zhihong Qian,Xue WANG. Research on the interference control and resource allocation in D2D communication[J]. Journal on Communications, 2018, 39(11): 198-206.

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References 20

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参数	取值
小区半径/m	1 000
高斯白噪声(N₀)/dBm	?114
路径损耗常数(λ)	0.01
路径损耗指数(χ)	4
蜂窝用户的最大发射功率/dBm	48
D2D用户的最大发射功率/dBm	24
系统带宽/kHz	180
用户最低信干噪比/dB	6
多径衰落	单位均值的指数分布
阴影衰落	均值为0，标准差为8的正态分布
D2D用户之间的最大距离/m	50
用户到基站的最小距离/m	25

Research on the interference control and resource allocation in D2D communication

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