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| 1 | 异构携能通信网络中人工噪声辅助的顽健能量与信息安全传输方案显示文摘异构携能通信网络中CSI存在随机误差时,为保证信息与能量传输的安全性及可靠性,提出一种人工噪声辅助的顽健能量与信息安全传输方案。通过联合设计宏基站、微基站的下行信息波束矩阵及人工噪声矩阵,使网络中其他用户信号及人工噪声能够干扰窃听者。同时提升系统能量的接收性能。考虑CSI随机误差,在基站的发送功率约束、合法用户的信息接收中断约束及窃听者的信息窃听中断约束下,以最大化系统能量接收性能为目标进行数学建模。建模后的问题是非凸的,首先将其等效转化为一种易于处理的形式;然后,分别利用Berstein-type不等式和Large-deviation不等式这2种方式将其中的中断概率约束转化为凸的线性矩阵不等式;最后结合二次等式引理及递归估计算法处理秩为1波束成形约束的非凸性。仿真结果表明,与对比方案相比,所提方案具有更高的系统能量接收性能和可行解性能,验证了其有效性和顽健性。 | 张波 黄开枝 钟州 陈亚军 | 2019 | 通信学报2019，40，3： | 8 |
| 2 | Probabilistic-constrained robust secure transmission for energy harvesting over MISO channels显示文摘In this paper, we consider a system supporting simultaneous wireless information and power transfer(SWIPT), where the transmitter delivers private message to a destination receiver(DR) and powers to multiple energy receivers(ERs) with multiple single-antenna external eavesdroppers(Eves). We study secure robust beamformer and power splitting(PS) design under imperfect channel state information(CSI).The artificial noise(AN) scheme is further utilized at the transmitter to provide strong wireless security. We aim at maximizing the energy harvested by ERs subject to the transmission power constraint, a range of outage constraints concerning the signal-to-interference-plus-noise ratio(SINR) recorded at the DR and the Eves, as well as concerning the energy harvested at the DR. The energy harvesting maximization(EHM)problem is challenging to directly solve, we resort to Bernstein-type inequality restriction technique to reformulate the original problem as a tractable approximated version. Numerical results show that our robust beamforming scheme outperforms the beamforming scheme relying on the worst-case design philosophy. | Bin LI Zesong FEI | 2018 | Science China(Information Sciences)2018，61，2： | 7 |
| 3 | Information Security Protocol Based System Identification with Binary-Valued Observations显示文摘 | XU Changbao ZHAO Yanlong ZHANG Ji-Feng | 2018 | Journal of Systems Science & Complexity2018，31，4： | 2 |
| 4 | Opportunistic access control for enhancing security in D2D-enabled cellular networks显示文摘In this paper, we investigate secure communication over cellular uplinks in device-to-device(D2 D)-enabled cellular networks. We consider a more general scenario, in which multiple D2 D pairs could simultaneously share the same resource block with a specific cellular user. First, an opportunistic access control scheme based on wireless channel gains is proposed, by which the candidate selected set of D2 D pairs sharing the same resource block is determined. The proposed scheme could guarantee reliable communications for both cellular users and D2 D pairs, and further could combat eavesdroppers while keeping the legitimate cellular user as non-intrusive as possible, regarding D2 D pairs as friendly jammers in a non-collaborative way. Then, we derive theoretical results to characterize the security and reliability of the typical cellular and D2 D links, respectively. To further support the performance of this hybrid network, we next present an interference threshold optimization model. Our aim is to minimize the connection outage probability(COP)of D2 D pairs subject to the secrecy requirement of the cellular user. Finally, simulation results are presented to validate the effectiveness of our proposed scheme. | Yajun CHEN Xinsheng JI Kaizhi HUANG Bin LI Xiaolei KANG | 2018 | Science China(Information Sciences)2018，61，4： | 2 |
| 5 | Secret key generation based on private pilot under man-in-the-middle attack显示文摘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 keys.To 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. | Yu HUANG Liang JIN Na LI Zhou ZHONG Xiaoming XU | 2017 | Science China(Information Sciences)2017，60，10： | 1 |
| 6 | 多天线中继系统中的鲁棒安全波束成形显示文摘针对放大转发(amplify-and-forward, AF)多天线中继系统中存在多个单天线窃听者的情况,提出具有鲁棒性的人工噪声辅助波束成形传输方案。中继节点可获得合法用户的理想信道状态信息和窃听者的非理想信道状态信息。在总发送功率和单个天线功率受限的情况下,通过联合优化波束成形和人工噪声协方差矩阵,最大化系统的最差情况(worst-case)安全速率。针对优化问题的非凸性,提出基于半定松弛(semidefinite relaxation,SDR)和S-过程(S-procedure)的双层优化算法,证明半定松弛问题存在秩-1波束成形解。仿真结果表明,所提方案具有鲁棒性且性能优于其它方案。 | 张立健 金梁 | 2018 | 信息工程大学学报2018，19，4： | 0 |
| 7 | 双向多天线中继系统中的安全波束成形显示文摘针对双向多天线中继系统中信息易被窃听的问题,提出了两种安全波束成形方案:安全和速率最大化波束成形(secrecy sum rate maximization beamforming,SSRMB)与零空间波束成形(null space beamforming,NSB).SSRMB方案中,采用具有收敛特性的连续凸估计策略,对非凸的安全和速率最大化问题进行求解,得到局部最优波束成形解.针对中继节点的天线个数大于窃听节点个数这一特殊场景,设计了低复杂度NSB方案,将中继转发的信息投影到等效窃听信道矩阵的零空间中,通过求解一个广义Rayleigh熵问题获得波束成形解.仿真结果表明,所提方案可以有效地提高系统的安全性能,SSRMB方案具有快速收敛特性. | 黄宇 张立健 金梁 刘璐 楼洋明 | 2018 | 中国科学:信息科学2018，48，2： | 0 |
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