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Dual-Threshold Based Secure On-Off Transmission Scheme for Dense HCNs with Imperfect CSI

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China Communications 2019年第3期16卷 132-142页

作者： Yunjia Xu Kaizhi Huang Yi Zou Xin Hu National Digital Switching System Engineering & Technological Research Center

In this paper, we propose a dual-threshold based secure On-Off transmission scheme, where signals are transmitted only if the channel condition can guarantee secure and reliable communication. First, we present a dynamic access strategy to increase access efficiency, which provides an access region for the intended user. Then, we propose an emission control policy to transmit signals according to the current channel condition, which declines the influence of channel estimation errors and guarantees qualities of communication links. Furthermore, we give a comprehensive performance analysis for the proposed scheme in terms of connection outage probability(COP) and secrecy outage probability(SOP), and present a dual-threshold optimization model to further support the performance. Numerical results verify that the secure On-Off transmission scheme can increase the system secure energy efficiency and guarantee reliable and secure communication.

关键词： physical layer security imperfect CSI dense heterogeneous cellular networks On-Off transmission secure energy efficiency

Secret Key Generation Based on Two-Way Randomness for TDD-SISO System

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China Communications 2018年第7期15卷 202-216页

作者： Shengjun Zhang Liang Jin Yangming Lou Zhou Zhong National Digital Switching System Engineering&Technological Research Center Zhengzhou 450002China

A novel secret key generation(SKG)method based on two-way randomness is proposed for TDD-SISO *** legitimate transceivers mutually transmit their own random signal via reciprocal wireless channel,then the multiplication of transmitted and received signal is used as common randomness to generate secret *** quasi-static channel,the theoretical SKG rates(SKGRs)of the three SKG methods,namely wireless channel based,one-way randomness and two-way randomness,are derived and ***,two practical SKG schemes based on twoway randomness,Scheme-1bit and Scheme-3bit,are completely designed and ***,Scheme-1bit applies to low signal to noise ratio(SNR)scenarios and achieves 0.13~0.86bit/T_s SKGR and 10^(-2)~10^(-5) level secret key outage probability(SKOP),while Scheme-3bit fits high SNR situation and obtains 0.93~1.35bit/T_s SKGR and 10^(-3)~10^(-4) level *** last,the national institute of standards and technology(NIST)test is conducted to evaluate the secret key randomness(SKRD)and the test results show that both of the proposed schemes have passed the test.

关键词： secret key generation physical layer security information reconciliation information theory

Secure Transmission Scheme Based on Dual-Thresholds for Simultaneous Wireless Information and Power Transfer

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China Communications 2017年第12期14卷 25-44页

作者： Xin Hu Kaizhi Huang Yajun Chen Liang Jin Yunjia Xu National Digital Switching System Engineering & Technological Research Center Zhengzhou 450002 China

This paper studies a simultaneous wireless information and power transfer system with multiple external eavesdroppers and internal curious *** model the random network by Poisson cluster process in consideration of the case where eavesdroppers hide around certain *** on the users that work in harvesting-transmitting mode with time switching receivers,we establish communication model via time division multiple *** this basis,we propose a lightweight secure transmission scheme based on dual-thresholds for physical-layer security enhancement,which consists of two protocols applied to the downlink(DL) and uplink(UL) transmission *** the DL,we design a dynamic information-power switching transmission protocol based on signal-to-noise ratio threshold,which provides an opportunistic approach to reform the fixed period allocation of information and power transfer;in the UL,an energy threshold is proposed for users to control the transmission,which is called a user-led on-off transmission ***,we give a comprehensive performance analysis for the proposed scheme in terms of delay,reliability,security and secrecy *** on the analysis results,we optimize the two thresholds and the DL-UL allocationcoefficient to maximize the secrecy *** results show the proposed scheme can bring about a substantial secrecy gain.

关键词： physical layer security simultane-ous wireless information and power transfer opportunistic approach on-offtransmission

Artificial Noise Aided Polar Codes for Physical LayerSecurity

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China Communications 2017年第12期14卷 15-24页

作者： Huiqing Bai Liang Jin Ming Yi China National Digital Switching System Engineering and Technological R&D Center Zhengzhou 450002 China

The secrecy rates of the existing practical secrecy coding methods are relative low to satisfy the security requirement of 5 G *** propose an artificial noise(AN) aided polar coding algorithm to improve the secrecy ***,a secrecy coding model based on AN is presented,where the confidential bits of last transmission code block are adopted as AN to inject into the current *** this way,the AN can only be eliminated from the jammed codeword by the legitimate *** the AN is shorter than the codeword,we then develop a suboptimal jamming positions selecting algorithm with the goal of maximizing the bit error rate of the *** and simulation results demonstrate that the proposed algorithm outperforms the random selection method and the method without AN.

关键词： physical layer security polarcodes artificial noise jamming positions se-lection

Secret key generation based on private pilot under man-in-the-middle attack

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Science China(Information Sciences) 2017年第10期60卷 93-106页

作者： Yu HUANG Liang JIN Na LI Zhou ZHONG Xiaoming XU National Digital Switching System Engineering and Technological R&D Center National Engineering Laboratory for Mobile Network Technologies Beijing University of Posts and Telecommunications

Given the openness and invariance of public pilot, secret key generation(SKG) based on wireless channels is vulnerable to active attacks. In this paper, we explore man-in-the-middle(MITM) attacks, where the attacker acts as a transparent relay to intercept channel state information and deduce the generated *** prevent this type of attacks, a dynamic private pilot is generated, where legitimate nodes first consider the information authenticated between them as seed information for the private pilot, and then generate the private pilot based on this seed information according to the pilot requirements. Then, both the new seed information and secret keys are dynamicaally derived from wireless channels that are estimated with the private pilot instead of a public pilot. The proposed private pilot encrypts and authenticates wireless channels, allowing an SKG rate close to that without attackers. Analysis and simulation results show that the proposed SKG approach can effectively withstand an MITM attack.

关键词： private pilot man-in-the-middle attack secret key generation physical layer security

物联网中一种抗大规模天线阵列窃听者的噪声注入方案

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电子与信息学报 2019年第1期41卷 67-73页

作者：彭建华张帅许晓明黄开枝金梁国家数字交换系统工程技术研究中心郑州450002

物联网中无线传输的安全难题是制约其发展的重要瓶颈,物联网终端受限的计算能力与硬件配置以及配备大规模天线阵列的窃听者给物理层安全技术带来了新的挑战。针对该问题,该文提出一种可对抗大规模天线阵列窃听者的轻量级噪声注入策略。... 详细信息

物联网中无线传输的安全难题是制约其发展的重要瓶颈,物联网终端受限的计算能力与硬件配置以及配备大规模天线阵列的窃听者给物理层安全技术带来了新的挑战。针对该问题,该文提出一种可对抗大规模天线阵列窃听者的轻量级噪声注入策略。首先,对所提出的噪声注入策略进行介绍,并分析了该策略的安全性;然后,基于该策略得到了系统吞吐量的闭式表达式,并对时隙分配系数和功率分配系数进行优化设计。理论和仿真结果表明,通过对物联网系统参数进行设计,所提出的噪声注入策略能够实现私密信息的安全传输。

关键词：物联网物理层安全噪声注入

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破损压缩文件的修复还原

电子与信息学报 2019年第8期41卷 1831-1837页

作者：王刚彭华唐永旺解放军信息工程大学

数据压缩和解压缩已广泛应用于现代通信和数据传输领域。但是如何解压缩损坏的无损压缩文件仍然是一个挑战。针对在通用编码领域广泛使用的无损数据压缩算法,该文提出一种能够修复误码并解压还原损坏的LZSS文件的有效方法,并给出了理论... 详细信息

数据压缩和解压缩已广泛应用于现代通信和数据传输领域。但是如何解压缩损坏的无损压缩文件仍然是一个挑战。针对在通用编码领域广泛使用的无损数据压缩算法,该文提出一种能够修复误码并解压还原损坏的LZSS文件的有效方法,并给出了理论依据。该方法通过利用编码器留下的残留冗余携带校验信息,在不损失任何压缩性能的情况下,能够修复LZSS压缩数据中的错误。所提方法不需要增加额外比特,也不改变编码规则和数据格式,所以与标准算法完全兼容。即采用具有错误修复能力的LZSS方案压缩的数据,仍然可以通过标准LZSS解码器进行解压。实验结果验证了所提算法的有效性和实用性。

关键词：压缩文件残留冗余多重匹配错误修复

异构携能通信网络中基于人工噪声辅助的鲁棒安全传输方案

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电子与信息学报 2019年第1期41卷 1-8页

作者：张波黄开枝国家数字交换系统工程技术研究中心郑州450002

异构携能通信网络中信道状态信息不准确时,为保证信息、能量传输的安全性与可靠性,该文提出一种基于人工噪声辅助的鲁棒安全传输方案。通过联合设计宏基站、微基站的下行信息波束及人工噪声矩阵,干扰窃听者,同时提升系统能量接收性能。... 详细信息

异构携能通信网络中信道状态信息不准确时,为保证信息、能量传输的安全性与可靠性,该文提出一种基于人工噪声辅助的鲁棒安全传输方案。通过联合设计宏基站、微基站的下行信息波束及人工噪声矩阵,干扰窃听者,同时提升系统能量接收性能。在基站的发送功率约束、合法用户的信息接收及能量接收中断约束和窃听者的窃听信息中断约束下,以最大化系统能量接收性能为目标进行建模。针对该问题的非凸性,首先将其等效转化为一种易于处理的形式;而后进一步利用Berstein-type不等式处理其中的中断概率约束,将其转化为凸的问题进行求解。仿真结果验证了该方案的安全性和鲁棒性。

关键词：异构网络无线携能通信物理层安全非理想信道状态信息凸优化

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毫米波下行多用户系统安全混合波束成形算法

电子与信息学报 2019年第4期41卷 952-958页

作者：黄开枝王少禹许晓明陈亚军国家数字交换系统工程技术研究中心郑州450002

毫米波混合波束成形结构受到日益广泛的认可,但缺乏以安全性为着眼点的混合波束成形算法研究,特别是当窃听者具有多用户译码能力时,系统安全性能无法得到保障。针对上述问题,该文基于人工噪声辅助的思想提出一种毫米波下行多用户系统安... 详细信息

毫米波混合波束成形结构受到日益广泛的认可,但缺乏以安全性为着眼点的混合波束成形算法研究,特别是当窃听者具有多用户译码能力时,系统安全性能无法得到保障。针对上述问题,该文基于人工噪声辅助的思想提出一种毫米波下行多用户系统安全混合波束成形算法。首先,将混合波束成形矩阵的模拟部分和数字部分解耦合独立求解,在充分考虑信道特性的基础上,通过最大化用户接收信号能量和迫零思想分别设计有用信号的模拟和数字波束成形矩阵;然后,通过SVD分解设计人工噪声的基带数字预编码矩阵,将人工噪声置于合法用户零空间。仿真结果表明,人工噪声辅助的安全混合波束成形算法有效解决了存在具有多用户译码能力窃听者时系统的安全问题。

关键词：毫米波多用户系统混合波束成形物理层安全人工噪声