- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Experimental Device-Independent Certification of a SIC-POVM
摘要： In this paper, we consider an orthogonal frequency division multiplexing communication system that adopts frame-by-frame transmission in high-speed railway (HSR) scenario. Due to the increase in demand for the QoS sensitive services, an efficient QoS-aware transmission strategy that improves the system performance is required urgently. Many efforts have been devoted to addressing this problem with the assumption of block fading channel in a frame duration. However, due to the frequent channel quality variation in a frame duration and serious inter channel interference in HSR scenario, the throughput of the QoS sensitive services degrades severely. Hence, a robust cross-layer transmission strategy that combines adaptive modulation (AM) scheme with truncated automatic repeat request protocol is proposed. In this cross-layer formulation, the normalized average throughput is optimized subject to the average power and the packet loss rate (PLR) requirements. First, we derive the closed form average bit error rate that represents the PLR requirement at the physical layer. Second, we obtain the solution of robust AM scheme and power allocation policy in the case of continuous rate. Third, we present the adaptive bits and power allocation scheme in the case of discrete rate, which can be implemented in practice. Finally, the performance of the proposed transmission strategy is evaluated by extensive simulations. Comparing with the constant transmit power AM scheme, the throughput increases by 20%, which demonstrates that the proposed robust cross-layer design is suitable for the HSR communication systems.
关键词： OFDM systems,Adaptive modulation,robust cross-layer design,QoS,fast time-varying fading channel,high-speed railway,packet loss rate
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Wing Integrated Solar Array Performance Study Using Photoluminescence
摘要： Recent investigations have revealed the susceptibility of phasor measurement units (PMUs) to the time synchronization attack by spoofing its global positioning system (GPS). This paper proposes a cross-layer detection mechanism to fight against simultaneous attacks toward multiple PMUs. In the physical layer, we propose a GPS carrier-to-noise ratio (C/No) based spoofing detection technique. We apply the patch-monopole hybrid antenna to two GPS receivers and compute the difference between the standard deviation of each receiver’s C/No. The priori probability of spoofing is calculated from the distributions of the difference. A counter is embedded in the physical layer to identify the most suspicious PMU. In the upper layer, the spoofing attack is considered similarly to the bad data injection toward the power system. A trustworthiness evaluation, which is based on both the physical layer information and power grid measurements, is applied to identify the PMU being attacked. An experiment has been carried to validate the proposed algorithm.
关键词： multiple attacks detection,Cross-layer mechanism,global positioning system (GPS) spoofing,phasor measurement units (PMU)
更新于2025-09-19 17:13:59
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[IEEE 2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) - Xiamen, China (2019.11.26-2019.11.29)] 2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) - Incorporated Design of Low Side-lobe Antenna with Inclined Slots in the Narrow Wall of Rectangular Waveguide Mounted With Radome
摘要： Tremendous traf?c demands for ubiquitous access and emerging multimedia applications signi?cantly increase the energy consumption of battery-powered mobile devices. This trend leads to that energy ef?ciency (EE) becomes an essential aspect of mobile ad hoc networks (MANETs). In this paper, we explore EE optimization as measured in bits per Joule for MANETs based on the cross-layer design paradigm. We model this problem as a nonconvex mixed integer nonlinear programming (MINLP) formulation by jointly considering routing, traf?c scheduling, and power control. Because the nonconvex MINLP problem is NP-hard in general, it is exceedingly dif?cult to globally optimize this problem. We, therefore, devise a customized branch and bound (BB) algorithm to ef?ciently solve this globally optimal problem. The novelties of our proposed BB algorithm include upper and lower bounding schemes and branching rule that are designed using the characteristics of the nonconvex MINLP problem. We demonstrate the ef?ciency of our proposed BB algorithm by offering numerical comparisons with a reference algorithm that uses the relaxation manners proposed in [1]–[3]. Numerical results show that our proposed BB algorithm scheme, respectively, decreases the optimality gap 81.98% and increases the best feasible solution 32.79% compared with the reference algorithm. Furthermore, our results not only provide insights into the design of EE maximization algorithms for MANETs by employing cooperations between different layers but also serve as performance benchmarks for distributed protocols developed for real-world applications.
关键词： Energy ef?ciency,branch and bound,MANET,optimization,cross layer
更新于2025-09-19 17:13:59
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[IEEE 2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS) - Genoa, Italy (2019.11.27-2019.11.29)] 2019 26th IEEE International Conference on Electronics, Circuits and Systems (ICECS) - Polymer Microwave Fiber: a New Communication Concept That Blends Wireless, Wireline and Optical Communication
摘要： In this paper, we consider an orthogonal frequency division multiplexing communication system that adopts frame-by-frame transmission in high-speed railway (HSR) scenario. Due to the increase in demand for the QoS sensitive services, an efficient QoS-aware transmission strategy that improves the system performance is required urgently. Many efforts have been devoted to addressing this problem with the assumption of block fading channel in a frame duration. However, due to the frequent channel quality variation in a frame duration and serious inter channel interference in HSR scenario, the throughput of the QoS sensitive services degrades severely. Hence, a robust cross-layer transmission strategy that combines adaptive modulation (AM) scheme with truncated automatic repeat request protocol is proposed. In this cross-layer formulation, the normalized average throughput is optimized subject to the average power and the packet loss rate (PLR) requirements. First, we derive the closed form average bit error rate that represents the PLR requirement at the physical layer. Second, we obtain the solution of robust AM scheme and power allocation policy in the case of continuous rate. Third, we present the adaptive bits and power allocation scheme in the case of discrete rate, which can be implemented in practice. Finally, the performance of the proposed transmission strategy is evaluated by extensive simulations. Comparing with the constant transmit power AM scheme, the throughput increases by 20%, which demonstrates that the proposed robust cross-layer design is suitable for the HSR communication systems.
关键词： OFDM systems,Adaptive modulation,robust cross-layer design,QoS,fast time-varying fading channel,high-speed railway,packet loss rate
更新于2025-09-19 17:13:59
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[IEEE 2019 Big Data, Knowledge and Control Systems Engineering (BdKCSE) - Sofia, Bulgaria (2019.11.21-2019.11.22)] 2019 Big Data, Knowledge and Control Systems Engineering (BdKCSE) - Thermoelectric Cooling Driver for Laser Projection Systems
摘要： Recent investigations have revealed the susceptibility of phasor measurement units (PMUs) to the time synchronization attack by spoofing its global positioning system (GPS). This paper proposes a cross-layer detection mechanism to fight against simultaneous attacks toward multiple PMUs. In the physical layer, we propose a GPS carrier-to-noise ratio (C/No) based spoofing detection technique. We apply the patch-monopole hybrid antenna to two GPS receivers and compute the difference between the standard deviation of each receiver’s C/No. The priori probability of spoofing is calculated from the distributions of the difference. A counter is embedded in the physical layer to identify the most suspicious PMU. In the upper layer, the spoofing attack is considered similarly to the bad data injection toward the power system. A trustworthiness evaluation, which is based on both the physical layer information and power grid measurements, is applied to identify the PMU being attacked. An experiment has been carried to validate the proposed algorithm.
关键词： Cross-layer mechanism,multiple attacks detection,phasor measurement units (PMU),global positioning system (GPS) spoofing
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - The New European Renewable Energy Directive - Opportunities and Challenges for Photovoltaics
摘要： Tremendous traffic demands for ubiquitous access and emerging multimedia applications significantly increase the energy consumption of battery-powered mobile devices. This trend leads to that energy efficiency (EE) becomes an essential aspect of mobile ad hoc networks (MANETs). In this paper, we explore EE optimization as measured in bits per Joule for MANETs based on the cross-layer design paradigm. We model this problem as a nonconvex mixed integer nonlinear programming (MINLP) formulation by jointly considering routing, traffic scheduling, and power control. Because the nonconvex MINLP problem is NP-hard in general, it is exceedingly difficult to globally optimize this problem. We, therefore, devise a customized branch and bound (BB) algorithm to efficiently solve this globally optimal problem. The novelties of our proposed BB algorithm include upper and lower bounding schemes and branching rule that are designed using the characteristics of the nonconvex MINLP problem. We demonstrate the efficiency of our proposed BB algorithm by offering numerical comparisons with a reference algorithm that uses the relaxation manners proposed in [1]–[3]. Numerical results show that our proposed BB algorithm scheme, respectively, decreases the optimality gap 81.98% and increases the best feasible solution 32.79% compared with the reference algorithm. Furthermore, our results not only provide insights into the design of EE maximization algorithms for MANETs by employing cooperations between different layers but also serve as performance benchmarks for distributed protocols developed for real-world applications.
关键词： cross layer,branch and bound,Energy efficiency,optimization,MANET
更新于2025-09-16 10:30:52
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Marginless Operation of Optical Networks
摘要： Considering flexible technologies available nowadays, operating optical networks much closer to their physical capacities is very tempting but necessarily requires efficient network automation. To achieve this, the two main challenges are handling failures, and accurately predicting performance in dynamic environments. We experimentally demonstrate the ability of the ORCHESTRA solution for early detection and localization of failures, to preventively mitigate their impact and thus guarantee smooth network operation. Then, leveraging machine learning for live performance estimation and closed-loop software-defined network (SDN) control, we demonstrate a fully automated reconfiguration of marginless connections undergoing critical performance variations over 228km of field-deployed fiber.
关键词： Optical networks,cross-layer optimization,failure localization,marginless operations,soft-failures
更新于2025-09-09 09:28:46