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2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS)最新文献

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Early detection of lung cancer based on sputum color image analysis 基于痰液彩色图像分析的肺癌早期检测
F. Taher, H. Al-Ahmad, N. Werghi
Lung cancer has been the largest cause of cancer deaths worldwide with an overall 5-year survival rate of only 15%. Its symptoms can be detected only in advanced stages where the patient's chance of survival is very low, thus causing the mortality rate to be the highest among all other types of cancer.
肺癌一直是全球癌症死亡的最大原因,总体5年生存率仅为15%。它的症状只能在患者生存机会非常低的晚期才能发现,因此在所有其他类型的癌症中死亡率最高。
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引用次数: 1
Connecting spiking neurons to a spiking memristor network changes the memristor dynamics 将尖峰神经元连接到尖峰忆阻器网络会改变忆阻器的动态
Deborah L. Gater, Attya Iqbal, Jeffrey Davey, E. Gale
Memristors have been suggested as neuromorphic computing elements. Spike-time dependent plasticity and the Hodgkin-Huxley model of the neuron have both been modelled effectively by memristor theory. The d.c. response of the memris-tor is a current spike. Based on these three facts we suggest that memristors are well-placed to interface directly with neurons. In this paper we show that connecting a spiking memristor network to spiking neuronal cells causes a change in the memristor network dynamics by: causing a change in current decay rate consistent with a change in memristor state; presenting more-linear I-t dynamics; and increasing the memristor spiking rate, as a consequence of interaction with the spiking neurons. This demonstrates that neurons are capable of communicating directly with memristors, without the need for computer translation.
忆阻器被认为是神经形态的计算元件。神经元的峰值时间依赖性可塑性和霍奇金-赫胥黎模型都已被记忆电阻理论有效地建模。记忆电阻器的直流响应是电流尖峰。基于这三个事实,我们认为忆阻器可以很好地直接与神经元连接。在本文中,我们证明了将尖峰记忆电阻网络连接到尖峰神经元细胞会引起记忆电阻网络动力学的变化:引起与记忆电阻状态变化一致的电流衰减率的变化;呈现更线性的I-t动力学;增加记忆电阻的尖峰率,这是与尖峰神经元相互作用的结果。这表明神经元能够直接与忆阻器交流,而不需要计算机翻译。
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引用次数: 16
FPGA implementation of a parameterized Fourier synthesizer 参数化傅立叶合成器的FPGA实现
Rui Yang, Jianguo Wang, B. Clement, A. Mansour
Field-Programmable Gate Array (FPGA) offers advantages for many applications, particularly where missions are complex and time performance is critical. For small-production digital acoustic synthesizers, FPGA can achieve the above-mentioned tighter system requirements with low total system costs on single chip. In this manuscript, a real-time acoustic synthesizer is implemented using Fourier series algorithm on Altera's Cyclone II FPGA chip. This work emphasizes systematic designs and parallel computations. The proposed system includes a flexible processor and a parallel parameterized acoustic module. On one hand, the Nios II embedded processor, which is relatively low-speed component, is used to generate commands and configure high-speed acoustic module parameters. On the other hand, acoustic module which should require high-speed components contains 4 parallel architectures to gain high-speed simultaneous calculus of 4 independent digital timbres. Every timbre is equivalent to 16 parallel high-precision harmonic channels with 0.3 % frequency error. Experimental results corroborate the fact that a single FPGA chip can achieve complex missions and attain real-time performances.
现场可编程门阵列(FPGA)为许多应用提供了优势,特别是在任务复杂和时间性能至关重要的情况下。对于小批量生产的数字声学合成器,FPGA可以在单片上以较低的系统总成本实现上述更严格的系统要求。在这篇论文中,使用傅立叶级数算法在Altera的Cyclone II FPGA芯片上实现了实时声学合成器。这项工作强调系统设计和并行计算。该系统包括一个柔性处理器和一个并行参数化声学模块。一方面,使用Nios II嵌入式处理器这一相对低速的部件,生成命令并配置高速声学模块参数。另一方面,声学模块需要高速组件,包含4个并行架构,以获得4个独立数字音色的高速同时演算。每个音色相当于16个平行的高精度谐波通道,频率误差为0.3%。实验结果证实了单个FPGA芯片可以实现复杂的任务和实时性。
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引用次数: 1
Instruction-driven timing CPU model for efficient embedded software development using OVP 基于OVP的高效嵌入式软件开发的指令驱动定时CPU模型
Felipe Rosa, Luciano Ost, R. Reis, G. Sassatelli
The software complexity of MPSoCs is increasing dramatically, resulting in new design challenges, such as improving the system's performance and programmability by porting parallel programming APIs. Such challenges impose more time and cost on the system's software development. This leads to the adopting of virtual platform frameworks aimed at functional verification like OVP, capable of simulating embedded systems running real application code at the speed of hundreds of MIPS. This work focuses on enhancing OVP capability by including a quasi-cycle accurate timing CPU model, making it suitable for performance analysis. This paper also evaluates the accuracy of the proposed timing CPU model when compared to a real system. Results show that the accuracy of our model varies from 0.06% to 10.56% depending on the benchmark profile.
mpsoc的软件复杂性急剧增加,带来了新的设计挑战,例如通过移植并行编程api来提高系统的性能和可编程性。这样的挑战增加了系统软件开发的时间和成本。这导致了针对功能验证的虚拟平台框架的采用,如OVP,能够以数百MIPS的速度模拟运行真实应用程序代码的嵌入式系统。这项工作的重点是通过包括准周期精确定时CPU模型来增强OVP能力,使其适合于性能分析。本文还与实际系统进行了比较,评估了所提出的定时CPU模型的准确性。结果表明,模型的准确率在0.06%到10.56%之间,这取决于基准配置文件。
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引用次数: 16
Low-noise CMOS analog-to-digital interface for MEMS resistive microphone 用于MEMS电阻式麦克风的低噪声CMOS模数接口
J. Nebhen, E. Savary, W. Rahajandraibe, C. Dufaza, S. Meillére, F. Haddad, E. Kussener, H. Barthélemy, J. Czarny, A. Walther
The design and implementation of a CMOS integrated analog to digital interface dedicated to hybrid integration of MEMS resistive microphone is presented. Audio sensing is achieved with an innovative low-cost technology that uses single crystal piezoresistive silicon nanowires as transducer in a MEMS. The circuit composed of a low-noise instrumentation preamplifier followed by a single bit fourth order continuous-time sigma-delta modulator (CT-ΣΔM) includes bias circuit for sensor. To join low power applications where extensive digital processing is employed, 0.28 μm CMOS process with a 2.5 V supply has been adopted. The test chip occupies an area of 1 mm2. Post-layout simulation exhibits promising performances where noise density is below 8 nV/VHz within the frequency range from 10 Hz to 10 kHz. Complete interface circuit features a current consumption of 2.4 mA.
介绍了一种用于MEMS电阻式传声器混合集成的CMOS模数集成接口的设计与实现。音频传感是通过一种创新的低成本技术实现的,该技术使用单晶压阻硅纳米线作为MEMS中的传感器。该电路由一个低噪声仪表前置放大器和一个单比特四阶连续时间σ - δ调制器(CT-ΣΔM)组成,其中包括传感器偏置电路。为了加入广泛采用数字处理的低功耗应用,采用了带有2.5 V电源的0.28 μm CMOS工艺。测试芯片的面积为1mm2。在10 Hz至10 kHz的频率范围内,噪声密度低于8 nV/VHz时,布局后仿真显示出良好的性能。完整的接口电路具有2.4 mA的电流消耗。
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引用次数: 3
Design and implementation of a 6-GHz array of two differential oscillators coupled through a MOS transistor network 通过MOS晶体管网络耦合的两个差分振荡器的6 ghz阵列的设计与实现
D. Mellouli, H. Mnif, D. Cordeau, M. Loulou, J. Paillot
During the past decade, coupled oscillators have shown their efficiency as simple methods for phase control in microwave antenna arrays, and hence as alternatives to conventional electronic beam steering methods. This paper describes the design and the implementation of a fully monolithic coupled-oscillator array, operating at 6 GHz in 0.25 μm BICMOS SiGe process. A novel and original method, based on the use of a MOS transistor, for coupling the differential oscillators is developed and presented. At 2.5 V power supply voltage, and a power dissipation of only 62.5 mW, the coupled oscillators array features a simulated phase noise of -124.8 dBc/Hz at 1 MHz frequency offset from a 6.01 GHz carrier, giving a simulated phase progression that was continuously variable over the range -84 ° <; Δ□ <; 84 ° and -96° <; Δ□ <; 96°.
在过去的十年中,耦合振荡器作为微波天线阵列中相位控制的简单方法已经显示出它们的效率,因此可以替代传统的电子束转向方法。本文描述了一种全单片耦合振荡器阵列的设计和实现,工作频率为6 GHz,采用0.25 μm BICMOS SiGe工艺。提出了一种新颖的基于MOS晶体管的差分振荡器耦合方法。在2.5 V电源电压下,耦合振荡器阵列的功耗仅为62.5 mW,在6.01 GHz载波的1 MHz频偏下,模拟相位噪声为-124.8 dBc/Hz,在-84°<范围内连续变化;Δ□<;84°和-96°<;Δ□<;96°。
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引用次数: 1
FPGA implementation of AES-based crypto processor 基于aes的加密处理器的FPGA实现
Hassan Anwar, M. Daneshtalab, M. Ebrahimi, J. Plosila, H. Tenhunen
Increased demand for data security is an undeniable fact. Towards achieving higher security, cryptographic algorithms play an important role in the protection of data from unapproved usage. In this paper, we present a crypto processor using Advanced Encryption Standard (AES). The AES is integrated with a 32-bit general purpose 5-stage pipelined MIPS processor. The integrated AES module is a fully pipelined module which follows inner round and outer round pipeline design. The results show that the presented pipeline version of the AES algorithm along with MIPS processor outperforms traditional methods. At the operating frequency of 553 MHz, the proposed design can achieve the throughput of 58 Gbps, the latency of 240 ns, and the minimum power consumption of 76 mw.
对数据安全日益增长的需求是一个不可否认的事实。为了实现更高的安全性,加密算法在保护数据不被非法使用方面发挥着重要作用。本文提出了一种采用高级加密标准(AES)的加密处理器。AES集成了一个32位通用5级流水线MIPS处理器。集成AES模块是一个全流水线模块,遵循内圆和外圆管道设计。结果表明,采用MIPS处理器的管道版本AES算法优于传统方法。在553mhz的工作频率下,该设计可实现58 Gbps的吞吐量、240 ns的时延和76 mw的最小功耗。
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引用次数: 21
Multi-level MPSoC modeling for reducing software development cycle 多级MPSoC建模,缩短软件开发周期
Marcelo G. Mandelli, Felipe Rosa, Luciano Ost, G. Sassatelli, F. Moraes
Multiprocessor SoCs (MPSoCs) have rapidly evolved towards high-performance heterogeneous computing systems designed under performance, power efficiency and scalability concerns. Such systems accomplish billions of operations per second moving towards hundreds of processing elements that communicate through a network-on-chip. The hardware and software complexity of such systems is increasing dramatically, resulting in new design challenges, such as providing scalable modeling facilities and verification for both hardware and software. This work proposes a multi-level design approach for MPSoCs, targeting the reduction of software development cycle. The paper also presents different scenarios for exploration purposes, showing the benefits in term of design space exploration for to the proposed environment.
多处理器soc (mpsoc)已经迅速向高性能异构计算系统发展,其设计考虑了性能、功率效率和可扩展性。这样的系统每秒完成数十亿次操作,向数百个通过片上网络通信的处理元素移动。此类系统的硬件和软件复杂性正在急剧增加,导致新的设计挑战,例如为硬件和软件提供可伸缩的建模设施和验证。本文提出了一种多级mpsoc设计方法,旨在缩短软件开发周期。本文还提出了不同的探索场景,展示了设计空间探索对拟议环境的好处。
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引用次数: 2
Low-cost auto-calibration of passive polyphase filter in image reject receiver 图像抑制接收机中无源多相滤波器的低成本自动校准
F. Haddad, W. Rahajandraibe, H. Aziza, K. Castellani-Coulié, J. Portal, J. Nebhen, H. Barthélemy
A low-cost auto-calibration technique of Radio-Frequency (RF) Passive Polyphase Filter (PPF) for high image rejection in low Intermediate Frequency receiver is presented. The resistance values of the filter are process and temperature dependent with great mismatch constraints especially in the RF domain. That can severely impact the circuit performances if not controlled. In order to overcome this limitation, an in-line auto-calibration of the PPF resistance values, based on Design Of Experiment (DOE) methodology, is presented. Using DOE, a model is derived from thermal and process deviations of the chip responses. This approach results in a robust and low-cost solution.
提出了一种低成本的高频无源多相滤波器(PPF)自校正技术,用于低中频接收机的高图像抑制。滤波器的电阻值与工艺和温度有关,特别是在射频域具有很大的失配约束。如果不加以控制,这将严重影响电路的性能。为了克服这一限制,提出了一种基于实验设计(DOE)方法的PPF电阻值在线自动校准方法。利用DOE,推导了芯片响应的热偏差和工艺偏差模型。这种方法产生了健壮且低成本的解决方案。
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引用次数: 0
Shock rejection & ambient temperature compensation mechanism for uncooled micocantilever thermal detector 非冷却微反杠杆热探测器的抗冲击和环境温度补偿机制
H. Tawfik, M. El-Gamal, F. Nabki
This paper presents a mechanism that involves the integration of a pixel blind to infrared (IR) radiation into a focal plane array (FPA) for thermal detection. The blind pixel serves as a reference capacitor while scanning the FPA active pixels. In harsh environment conditions (e.g. shocks and wide changes in ambient temperature), this mechanism yields down to a 0.83% percent error in the measured signal which is demonstrated here by simulations. The active and blind pixels design, fabrication process, and materials selection are discussed with the aid of finite element analysis.
本文提出了一种将对红外(IR)辐射视而不见的像素集成到焦平面阵列(FPA)中用于热探测的机制。在扫描FPA有源像素时,盲像素充当参考电容。在恶劣的环境条件下(例如冲击和环境温度的广泛变化),该机制在测量信号中产生0.83%的误差,这里通过模拟证明了这一点。通过有限元分析,讨论了有源和盲像元的设计、制造工艺和材料选择。
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引用次数: 1
期刊
2013 IEEE 20th International Conference on Electronics, Circuits, and Systems (ICECS)
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