面向物联网无线携能通信系统的机会安全传输方案
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摘要
针对物联网无线携能通信系统中能量输送和信息传输的差异性需求,提出了一种"信息-能量"动态切换的机会安全传输方案。首先,考虑多小区、多用户、多窃听者的时域切换型携能通信网络模型,发送端根据信道状态在能量输送与信息传输之间动态切换,改变了传统能量输送与信息传输的固定分配方案,从而满足能量输送和信息传输的差异性需求。在此基础上,综合分析了能量传输和信息传输的性能,包括能量传输的稳定性和效率以及在窃听者独立窃听、联合窃听场景下信息传输的可靠性和安全性。然后,分析了切换门限对系统性能的影响,并在能量约束条件下,为兼顾系统安全性和可靠性,设计了最大化保密吞吐量的切换门限优化算法。最后,仿真证明了所提方案的有效性。
Aiming at the different requirements of energy transmission and information transmission in simultaneouswireless information and power transfer(SWIPT), an opportunistic transmission scheme was proposed for enhancingphysical layer security. Firstly, a SWIPT network with multi-cells was considered where multi-users, multi-eavesdroppersand the users were assumed to adopt time-switching based receivers and employ non-linear conversion model to harvestenergy. The transmitter could dynamically switch between information transmission and power transfer according to thechannel state, breaking the traditional fixed slot allocation scheme of energy transmission and information transmission.On this basis, the performances of energy transmission and information transmission were analyzed comprehensively, in-cluding the stability and efficiency of energy transmission, and the reliability and security of information transmission inthe scenario of independent eavesdropping and joint eavesdropping. Next, a switching threshold optimization model wasgiven to maximize its secrecy throughput under the constraint of the energy transmission, the reliability and secrecy per-formance requirements of information transmission. Finally, simulation results verify the validity of the proposed scheme.
Aiming at the different requirements of energy transmission and information transmission in simultaneouswireless information and power transfer(SWIPT), an opportunistic transmission scheme was proposed for enhancingphysical layer security. Firstly, a SWIPT network with multi-cells was considered where multi-users, multi-eavesdroppersand the users were assumed to adopt time-switching based receivers and employ non-linear conversion model to harvestenergy. The transmitter could dynamically switch between information transmission and power transfer according to thechannel state, breaking the traditional fixed slot allocation scheme of energy transmission and information transmission.On this basis, the performances of energy transmission and information transmission were analyzed comprehensively, in-cluding the stability and efficiency of energy transmission, and the reliability and security of information transmission inthe scenario of independent eavesdropping and joint eavesdropping. Next, a switching threshold optimization model wasgiven to maximize its secrecy throughput under the constraint of the energy transmission, the reliability and secrecy per-formance requirements of information transmission. Finally, simulation results verify the validity of the proposed scheme.
引文
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[2]ZHANG R,HO C K.MIMO broadcasting for simultaneous wireless information and power transfer[J].IEEE Transactions on Wireless Communications,2013,12(5):1989-2001.
[3]ZHOU X,ZHANG R,HO C K.Wireless information and power transfer:architecture design and rate-energy tradeoff[J].IEEE Transactions on Communications,2013,61(11):4754-4767.
[4]CHEN Y,JI X,HUANG K,et al.Artificial noise-assisted physical layer security in D2D-enabled cellular networks[J].Eurasip Journal on Wireless Communications and Networking,2017(178):1-15.
[5]LI X,JIANG T,CUI S,et al.Cooperative communications based on rateless network coding in distributed MIMO systems[coordinated and distributed MIMO][J].IEEE Wireless Communications,2010,17(3):60-67.
[6]ZOU Y L.Physical-layer security for spectrum sharing systems[J].IEEETransactions on Wireless Communications,2017,16(2):1319-1329.
[7]DENG Y,WANG L,WONG K K,et al.Safeguarding massive MIMOaided HetNets using physical layer security[C]//International Conference on Wireless Communications&Signal Processing.2015:1-5.
[8]LIU L,ZHANG R,CHUA K C.Secrecy wireless information and power transfer with MISO beamforming[J].IEEE Transactions on Signal Processing,2014,62(7):1850-1863.
[9]CHU Z,ZHU Z,JOHNSTON M,et al.Simultaneous wireless information power transfer for MISO secrecy channel[J].IEEE Transactions on Vehicular Technology,2015,65(9):6913-6925.
[10]WU W,WANG B.Robust downlink beamforming design for multiuser miso communication system with SWIPT[C]//IEEE International Conference on Communications.2015:4751-4756.
[11]SHI Q,XU W,WU J,et al.Secure beamforming for MIMO broadcasting with wireless information and power transfer[J].IEEE Transactions on Wireless Communications,2015,14(5):2841-2853.
[12]PAN G,LEI H,DENG Y,et al.On secrecy outage of MISO SWIPTsystems in the presence of imperfect CSI[C]//European Signal Processing Conference.2016:818-822.
[13]LI B,FEI Z.Probabilistic-constrained robust secure transmission for energy harvesting over MISO channels[J].Science China Information Sciences,2018,61(2):022303.
[14]LI Q,MA W K,SO M C.Robust artificial noise-aided transmit optimization for achieving secrecy and energy harvesting[C]//IEEE International Conference on Acoustics,Speech and Signal Processing.2014:1596-1600.
[15]TIAN M,HUANG X,ZHANG Q,et al.Robust AN-aided secure transmission scheme in MISO channels with simultaneous wireless information and power transfer[J].IEEE Signal Processing Letters,2015,22(6):723-727.
[16]ZHU Z,CHU Z,WANG Z,et al.Joint optimization of AN-aided beamforming and power splitting designs for MISO secrecy channel with SWIPT[C]//IEEE International Conference on Communications.2016:1-6.
[17]XIONG K,FAN P,LETAIEF K B.Time-switching based SWIPT for network-coded two-way relay transmission with data rate fairness[C]//IEEE International Conference on Acoustics,Speech and Signal Processing.2015:5535-5539.
[18]BOSHKOVSKA E,NG D W K,ZLATANOV N,et al.Practical non-linear energy harvesting model and resource allocation for SWIPTsystems[J].IEEE Communications Letters,2015,19(12):2082-2085.
[19]BOSHKOVSKA E,MORSI R,NG D W K,et al.Power allocation and scheduling for SWIPT systems with non-linear energy harvesting model[C]//IEEE International Conference on Communications.2016:1-6.
[20]DHILLON H S,KOUNTOURIS M,ANDREWS J G.Downlink MIMOHet Nets:modeling,ordering results and performance analysis[J].IEEETransactions on Wireless Communications,2013,12(10):5208-5222.
[21]QI X,HUANG K,ZHONG Z.MU-MIMO aided secure transmission in cognitive downlink heterogeneous cellular networks[C]//International Symposium on Wireless Personal Multimedia Communications.2016:1-6.
[22]GUPTA A K,DHILLON H S,VISHWANATH S,et al.Downlink coverage probability in MIMO HetNets with flexible cell selection[C]//Global Communications Conference.2015:683-687.
[23]CHEN Y,JI X,HUANG K,et al.Opportunistic access control for enhancing security in D2D-enabled cellular networks[J].Science China Information Sciences,2018,61(4):1-12.
[24]XU X,HE B,YANG W,et al.Secure transmission design for cognitive radio networks with poisson distributed eavesdroppers[J].IEEE Transactions on Information Forensics&Security,2015,11(2):373-387.
[25]KUO C C,TSAI S H,TADJPOUR L,et al.Precoding techniques for digital communication systems[M].Springer Publishing Company,2008.
[26]ZHANG J,LIU G.Channel estimation error on performance of zero force beamforming based multiuser SDMA in downlink[C]//International Conference on Wireless Communications,Networking and Mobile Computing.2006:1-4.
[27]GERACI G,SINGH S,ANDREWS J G,et al.Secrecy rates in broadcast channels with confidential messages and external eavesdroppers[J].IEEE Transactions on Wireless Communications,2015,13(5):2931-2943.