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2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)最新文献

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SaFIoV: A Secure and Fast Communication in Fog-based Internet-of-Vehicles using SDN and Blockchain SaFIoV:基于SDN和区块链的基于雾的车联网安全快速通信
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531857
Jamal Alotaibi, Lubna K. Alazzawi
The Internet of Vehicles (IoV) is a decentralized network that enables data sharing between connected vehicles and vehicular ad hoc networks (VANETs). However, since different IoV applications have varied Quality-of-Service (QoS) requirements, creating an effective solution to cope with big data in IoV is challenging. Fog computing addresses the inherent flaw of centralized data processing in cloud computing by offloading computationally-intensive tasks to closely located fog nodes. Also, with an increasing number of vehicles under the IoV architecture, new challenges and requirements are emerging such as scalability, efficient resource usage, and secure communication. In this paper, we address the problems of load-balancing and secure communication in SDN-enabled and fog-based IoV networks. Our methodology (SaFIoV) efficiently distributes tasks in the fog-to-fog and vehicles-to-fog layers using reinforcement learning (RL) methods. Moreover, powered by Blockchain technology, our method provides secure communication. The result of our experimental study shows that SaFIoV can efficiently utilize the available resources while avoiding congestion and minimizing latency in the IoV network.
车联网(IoV)是一个分散的网络,可以实现联网车辆和车辆自组织网络(vanet)之间的数据共享。然而,由于不同的车联网应用具有不同的服务质量(QoS)要求,因此创建一个有效的解决方案来应对车联网中的大数据是具有挑战性的。雾计算通过将计算密集型任务卸载到位置较近的雾节点,解决了云计算集中数据处理的固有缺陷。此外,随着越来越多的车辆采用车联网架构,新的挑战和要求也不断出现,如可扩展性、高效资源利用和安全通信。在本文中,我们解决了在支持sdn和基于雾的IoV网络中的负载平衡和安全通信问题。我们的方法(SaFIoV)使用强化学习(RL)方法有效地将任务分配到雾到雾和车辆到雾层。此外,通过区块链技术,我们的方法提供了安全的通信。我们的实验研究结果表明,SaFIoV可以有效地利用可用资源,同时避免拥塞和最小化延迟。
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引用次数: 5
A Low-Complexity Flexible Logic-Locking Scheme Resisting Removal Attacks 一种抗移除攻击的低复杂度灵活逻辑锁定方案
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531796
Jingbo Zhou, Xinmiao Zhang
Logic locking is necessary for protecting intellectual property. Although logic-locking schemes have been proposed to resist the powerful satisfiability (SAT)-based attack, many of them are subject to removal attacks, which identify the logic- locking block and replace its output by the correct signal, so the circuit would function correctly without the right key. In order to prevent removal attacks, the stripped functional logic locking-Hamming distance (SFLL-HD) scheme and its variations corrupt the original circuit and add a logic-locking block to correct the errors. The high-complexity HD checker can be also replaced by the Cascaded(CAS)-lock block. This paper proposes a new low-complexity logic-locking scheme inspired by the Generalized(G)-Anti-SAT block. By relaxing the constraint of the G-Anti-SAT design in the SFLL setting, our new logic-locking scheme reduces the logic complexity by around 37% compared to the M-CAS block with similar resistance to the SAT and removal attacks. Additionally, unlike the SFLL-HD and Mirrored (M)- CAS schemes, the proposed logic-locking block can use a large variation of functions. This makes existing or potential attacks utilizing properties of the logic function impossible.
逻辑锁定是保护知识产权的必要手段。尽管已经提出了一些逻辑锁定方案来抵御基于满足性(SAT)的强大攻击,但其中许多方案都容易受到移除攻击的影响,移除攻击会识别出逻辑锁定块,并用正确的信号替换其输出,从而使电路在没有正确密钥的情况下也能正常工作。为了防止移除攻击,剥离功能逻辑锁定-汉明距离(SFLL-HD)方案及其变体破坏了原始电路,并增加了逻辑锁定块来纠正错误。高复杂性的HD检查器也可以被级联(CAS)锁块取代。本文从广义(G)-Anti-SAT块的启发出发,提出了一种新的低复杂度逻辑锁定方案。通过放宽G-Anti-SAT设计在SFLL设置中的约束,我们的新逻辑锁定方案与具有类似SAT和移除攻击抵抗力的M-CAS块相比,将逻辑复杂性降低了约37%。此外,与SFLL-HD和镜像(M)- CAS方案不同,所提出的逻辑锁定块可以使用大量不同的函数。这使得利用逻辑函数属性的现有或潜在攻击变得不可能。
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引用次数: 0
A Controllable KVCO Ring VCO Topology 一种可控KVCO环型VCO拓扑
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531824
Rajath Bindiganavile, A. Tajalli
A differential ring Voltage Controlled Oscillator (VCO) with a controllable KVCO is introduced. The capability to control KVCO enables post-fabrication calibration of VCO gain, in order to reduce its vulnerability to Process, Voltage, and Temperature (PVT) variations. Performance of the proposed circuit topology, and its application in design of Phase-Locked Loops (PLLs), are analyzed. The gain of the proposed VCO can be tuned over ±20% of its nominal value. Simulations show that phase noise of the proposed circuit varies by less than 2 dBc/Hz compared to the conventional topology, at an offset frequency of 10 MHz, over its entire KVCO tuning range.
介绍了一种具有可控KVCO的差动环压控振荡器(VCO)。控制KVCO的能力可以实现VCO增益的制造后校准,以减少其对工艺,电压和温度(PVT)变化的脆弱性。分析了所提电路拓扑的性能及其在锁相环设计中的应用。所提出的压控振荡器的增益可调到其标称值的±20%。仿真结果表明,在整个KVCO调谐范围内,在偏移频率为10 MHz的情况下,所提出电路的相位噪声与传统拓扑相比变化小于2 dBc/Hz。
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引用次数: 0
A Proposed Software Protection Mechanism for Autonomous Vehicular Cloud Computing 一种自动驾驶汽车云计算的软件保护机制
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531682
Muhammad Hataba, Ahmed B. T. Sherif, Reem Elkhouly
Cars are becoming smarter every day. They are being equipped with sensors, communications interfaces, and more powerful processing capabilities. The primary purpose was to enable these cars to drive themselves without any human interventions and become so-called Autonomous Vehicles (AVs). But why stop there, why not harness all that computing power for a greater collective purpose. That’s how the idea of Autonomous Vehicular Cloud Computing (AVCC) was born. Nonetheless, this is not a trivial task, the mobile and dynamic nature of vehicles poses a significant challenge in the formation and management of this cloud computing model and yet a more substantial challenge in terms of security and privacy of all the parties involved in this system. In this paper, we focus on protecting software running on AVCC. We use dynamic obfuscated compilation to complicate programs’ execution paths and hinder information leakage via side channels attacks. Relying on compilers offers advantages, such as the independence of architecture and support for a variety high-level programming languages and application simplicity with minimal set-up cost. Here, we introduce our system in the realm of ARM processor, which power AVCC. Then, we present execution statistics for simple standard programs. The results show tangible timing variations in diversified code versions for the same program, which may disrupt side-channel attacks.
汽车每天都在变得更智能。它们配备了传感器、通信接口和更强大的处理能力。其主要目的是让这些汽车在没有任何人为干预的情况下自动驾驶,成为所谓的自动驾驶汽车(AVs)。但为什么就止步于此,为什么不利用所有的计算能力来实现更大的集体目标呢?这就是自动驾驶汽车云计算(AVCC)概念的诞生。尽管如此,这并不是一项微不足道的任务,车辆的移动性和动态性对这种云计算模型的形成和管理提出了重大挑战,但就该系统中涉及的所有各方的安全和隐私而言,这是一个更大的挑战。本文主要研究如何保护运行在AVCC上的软件。我们使用动态模糊编译使程序的执行路径复杂化,并阻止了侧通道攻击导致的信息泄漏。依赖编译器提供了一些优势,例如体系结构的独立性、对各种高级编程语言的支持以及以最小的设置成本实现应用程序的简单性。本文介绍了基于ARM处理器的AVCC系统。然后,给出了简单标准程序的执行统计。结果表明,同一程序在不同的代码版本中存在明显的时序变化,这可能会破坏旁信道攻击。
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引用次数: 1
A low kickback noise and low power dynamic comparator 低反打噪声和低功率动态比较器
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531668
Bibhudutta Satapathy, Amandeep Kaur
A low kickback noise and low power dynamic comparator is proposed in this paper. The designed comparator uses the current recycling approach to save power and proposes two kickback noise reduction techniques using only two additional switches. The technique I reduces the kickback noise from 20 mV to 7 mV and technique II reduces from 20 mV to 3 mV while consuming 11 µW and 21 µW, respectively of power. The proposed comparator is designed and simulated in UMC 180 nm CMOS process and is verified across the process corners. It operates at 100 MHz frequency and has an input range of 1 V. Monte Carlo simulations are also performed for the proposed techniques to test the design robustness.
本文提出了一种低反扰噪声、低功耗的动态比较器。设计的比较器使用当前的回收方法来节省功率,并提出了两种反反馈降噪技术,仅使用两个额外的开关。技术1将反踢噪声从20 mV降至7 mV,技术2从20 mV降至3 mV,功耗分别为11µW和21µW。在UMC 180nm CMOS工艺中设计并仿真了所提出的比较器,并进行了跨工艺角的验证。它的工作频率为100mhz,输入范围为1v。通过蒙特卡罗仿真验证了所提方法的鲁棒性。
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引用次数: 3
20 Gb/s Dual-Mode SST VCSEL Driver 20gb /s双模SST VCSEL驱动程序
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531803
S. Mahran, O. Liboiron-Ladouceur, G. Cowan
This work presents simulation results of a CMOS 1.2-V single-ended source-series-terminated (SST) voltage-mode electrical link driver in a 65 nm technology. The driver operates in two driving modes. The first mode uses symmetric pre-emphasis feedforward equalization to drive a short electrical link which introduces a total loss of 16 dB including electro-static discharge (ESD) and wire bonding losses at 10 GHz. The second mode drives a VCSEL diode through an electrical link exploiting asymmetric equalization. Through simulation, this dual-mode proposed driver operates up to 20 Gb/s and is estimated to dissipate 40 mW of power.
本文介绍了65纳米工艺下CMOS 1.2 v单端源串联端接(SST)电压模式电链路驱动器的仿真结果。驾驶员在两种驾驶模式下操作。第一种模式使用对称的预强调前馈均衡来驱动短电链路,包括静电放电(ESD)和10 GHz的线键合损耗在内的总损耗为16 dB。第二种模式通过利用非对称均衡的电链路驱动VCSEL二极管。通过仿真,该双模驱动器的运行速度高达20gb /s,估计功耗为40mw。
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引用次数: 2
Magnetoelectric Wireless Power Transfer System for Biomedical Implants 生物医学植入物磁电无线传输系统
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531861
Dibyajyoti Mukherjee, D. Mallick
This work presents the design and analysis of magnetoelectric (ME) transducer based wireless power transfer (WPT) system incorporating a suitable interface power management circuit (PMC). ME transducers provide effective means to design high-efficiency power transfer to medical implantable devices at low frequencies addressing the trade-off between size miniaturization, lower skin attenuation and higher power transfer. A tri-layered ME laminated transducer operating at 50kHz is designed and fabricated to study the source characteristics. The proposed ME WPT device produces 2.4V output voltage and 1.75mW output power across a load of 3kΩ when the input magnetic field is 2.5mT. A novel PMC design based on Dickson Charge Pump followed by peak detector, buck regulator, and synchronous electric charge extraction (SECE) switching technique is considered which is implemented using low-cost, off-the-shelf components on PCB. The proposed circuit is characterized by very low current consumption and is specifically designed for operating at an input voltage ranging between 350mV to 15V, which provides a significant flexibility in terms of transducer design specifically towards high efficiency WPT systems.
本文介绍了基于磁电(ME)换能器的无线电力传输(WPT)系统的设计和分析,该系统包含合适的接口电源管理电路(PMC)。ME换能器为设计低频医疗植入式设备的高效功率传输提供了有效手段,解决了尺寸小型化、更低的皮肤衰减和更高的功率传输之间的权衡。设计并制作了一种工作频率为50kHz的三层ME叠层换能器,对其源特性进行了研究。当输入磁场为2.5mT时,所提出的ME WPT器件在3kΩ负载上产生2.4V输出电压和1.75mW输出功率。提出了一种基于Dickson电荷泵、峰值检测器、降压调节器和同步电荷提取(SECE)开关技术的新型PMC设计,该设计采用低成本、现成的PCB元件实现。所提出的电路的特点是电流消耗非常低,并且专门设计用于在350mV至15V的输入电压范围内工作,这为专门针对高效率WPT系统的换能器设计提供了显着的灵活性。
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引用次数: 5
An Ising Machine Solving Max-Cut Problems based on the Circuit Synthesis of the Phase Dynamics of a Modified Kuramoto Model 基于修正Kuramoto模型相动力学电路综合的最大割问题求解机
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531734
K. Ochs, Bakr Al Beattie, S. Jenderny
A promising approach for efficiently solving NP-hard optimization problems is based on mapping the problems onto Ising machines. Oscillator-based Ising machines can be implemented by utilizing sub-harmonic injection locking, which enables binary phase shifts between the oscillators and leads to an improved reliability of Ising machines. Based on a modified Kuramoto model with sub-harmonic injection locking, we synthesize an ideal electrical circuit displaying the phase dynamics of an Ising machine. The ideal circuit can be utilized to specifically take non-ideal effects into account, serving as a starting point for designing Ising machines with increased performance when considering existing electrical components. We furthermore derive a corresponding wave digital model, which is utilized for emulating the synthesized electrical circuit. The emulation results show that the synthesized circuit indeed models the phase dynamics of an Ising machine capable of solving Max-Cut problems with an accuracy of 88% for a 5-node problem and weights between 0 and 31.
一种有效解决NP-hard优化问题的有前途的方法是基于将问题映射到伊辛机上。基于振荡器的Ising机器可以通过利用次谐波注入锁来实现,这使得振荡器之间的二进制相移能够实现,从而提高了Ising机器的可靠性。基于改进的具有次谐波注入锁定的Kuramoto模型,我们合成了一个显示伊辛机相位动力学的理想电路。理想电路可用于专门考虑非理想影响,在考虑现有电气元件时,可作为设计具有更高性能的Ising机器的起点。并推导出相应的波形数字模型,用于仿真合成电路。仿真结果表明,合成电路确实模拟了伊辛机的相位动力学,对于5节点问题,权值在0 ~ 31之间的最大切割问题,伊辛机的求解精度为88%。
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引用次数: 8
A Compact and Power-Efficient Noise Generator for Stochastic Simulations 一种用于随机模拟的紧凑且节能的噪声发生器
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531704
Haixiang Zhao, R. Sarpeshkar, S. Mandal
This paper describes an adaptive noise generator circuit suitable for on-chip simulations of stochastic chemical kinetics. The circuit uses amplified BJT white noise and adaptive low-pass filtering to emulate the power spectrum and auto-correlation of random telegraph signals (RTS) with Poisson-distributed level transitions. A current-mode implementation in the IHP 0.25 µm BiCMOS process shows excellent agreement with theoretical results from the Gillespie stochastic simulation algorithm over a 60 dB range in mean current levels (modeling molecule count numbers). The circuit has an estimated layout area of 0.01 mm2 and typically consumes 100 µA, which are 10× and 8× better, respectively, than prior implementations.
本文介绍了一种适用于随机化学动力学片上模拟的自适应噪声产生电路。该电路采用放大的BJT白噪声和自适应低通滤波来模拟具有泊松分布电平转换的随机电报信号(RTS)的功率谱和自相关。在IHP 0.25µm BiCMOS工艺中的电流模式实现与Gillespie随机模拟算法在平均电流水平(模拟分子计数)60 dB范围内的理论结果非常吻合。该电路的估计布局面积为0.01 mm2,通常功耗为100 μ A,分别比以前的实现高10倍和8倍。
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引用次数: 2
Modification Comparisons of the Particle Swarm and Levy Flight Firefly Adaptive DSP Algorithms 粒子群和Levy飞行萤火虫自适应DSP算法的改进比较
Pub Date : 2021-08-09 DOI: 10.1109/MWSCAS47672.2021.9531701
W. Jenkins, Magni Hussain
Previous research results have demonstrated that the bio-inspired Lévy Flight Firefly Algorithm (LFFA) can be effectively used in IIR adaptive filters, non-linear adaptive filters, IIR coupled form adaptive filters, and IIR lattice-ladder adaptive filters. It has recently been shown that the LFFA can be applied to adaptive 2-D McClellan "unconstrained" Transform filters so the adaptivity can approximate the frequency domain contours. This paper demonstrates how a special block length modification to the LFFA algorithm produces a 2-D Modified LFFA (2-D MLFFA) that enhances the adaptive convergence rate and lowers the MSE as the 2D-MLFFA converges toward the global minimum MSE.
已有的研究结果表明,LFFA算法可以有效地应用于IIR自适应滤波器、非线性自适应滤波器、IIR耦合形式自适应滤波器和IIR格梯自适应滤波器。最近的研究表明,LFFA可以应用于自适应二维麦克莱伦“无约束”变换滤波器,因此自适应性可以近似频域轮廓。本文演示了如何对LFFA算法进行特殊的块长度修改,从而产生2-D Modified LFFA (2-D MLFFA),该算法在2D-MLFFA向全局最小MSE收敛时提高了自适应收敛速率并降低了MSE。
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引用次数: 0
期刊
2021 IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)
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