基于C-RAN前向压缩的物联网安全通信方法

doi:10.11959/j.issn.2096-3750.2018.00064

Abstract

Abstract:

A resource allocation algorithm was proposed for downlink C-RAN secure communication system.This algorithm jointly optimized the parameters of base station (BS) mode,quantized noise and beamforming under the constraints of SINR requirements of Internet of things information receiver,eavesdropped receiver and fronthaul link capacity.Such a design was a non-convex optimization problem,and a step-by step optimization algorithm was proposed to decompose the original optimization problem efficiently.Semi-definite technique and function smoothing approach were adopted,and the local optimization solution of the original problem was obtained by the iterative different of convex method.Bi-section approach was further proposed to determine BS mode,and the transmitting power of the BSs were finally optimized.Simulation results indicate that the proposed joint optimization algorithm achieves better performance than group sparse optimization algorithm and baseline algorithm,and it has approximate optimal performance as the exhaustive search algorithm.

Key words: C-RAN, fronthaul compression, physical layer security, Internet of things communication

CLC Number:

TP391

Yong WANG,Mu ZHOU,Zengshan TIAN,Jinjun WU. Secure communication approach for Internet of things based on C-RAN fronthaul compression[J]. Chinese Journal on Internet of Things, 2018, 2(3): 51-60.

Figures/Tables 9

References 29

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参数	取值	参数	取值
路径损耗	148.1+37.6log₂d_kl	η	1/4
信道带宽	10 MHz	P^max	1W
天线增益	9 dBi	P^c	5W
阴影衰落	8 dB	ε²	0.02
收敛误差	10^-5	I_max	50
C	3 bit/(s·Hz)	σ	?104 dBm
γ	10 dB	Γ	?10 dB

	Ch 1	Ch 2	Ch 3	Ch 4
BS 1	28.00	5.35	3.95	18.00
BS 2	2.89	9.89	1.46	20.00
BS 3	12.00	2.88	3.22	2.36
BS 4	6.39	23.00	2.01	19.00
BS 5	7.79	2.64	5.59	27.00
BS 6	13.00	5.88	1.56	7.24
BS 7	15.00	1.48	7.34	3.54

Secure communication approach for Internet of things based on C-RAN fronthaul compression

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