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International Conference on Design and Test of Integrated Systems in Nanoscale Technology, 2006. DTIS 2006.最新文献

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Dual band CMOS LNA design with current reuse topology 基于当前复用拓扑的双频CMOS LNA设计
M. Ben Amor, A. Fakhfakh, H. Mnif, M. Loulou
A new architecture of dual band receiver was introduced; it is able to make simultaneous operations at two different frequency bands. This architecture uses a new dual band low noise amplifier (LNA). A novel high gain and low noise amplifier topology is proposed. This paper presents a general methodology to design a LNA with current reuse topology for the two standards GSM and UMTS at 947.5MHz and 2.14GHz frequencies respectively, A fully integrated dual band LNA was designed using 0.35mum CMOS process. At 947.5MHz, the LNA exhibits a noise figure of 2.3dB, a voltage gain of 28dB, a CP1 of -12dBm. However, the LNA at 2.14GHz features a noise figure of 2.71dB, a voltage gain of 17dB and a CP1 of -4.5dBm. The power consumption is 37.5mW under a power supply voltage of 2.5V
介绍了一种新的双频接收机结构;它能够在两个不同的频段同时进行操作。该架构采用了一种新型双频低噪声放大器(LNA)。提出了一种新的高增益低噪声放大器拓扑结构。本文提出了一种针对GSM和UMTS两种标准(分别为947.5MHz和2.14GHz)的当前复用拓扑设计LNA的一般方法,采用0.35 μ m CMOS工艺设计了一种完全集成的双频LNA。在947.5MHz时,LNA的噪声系数为2.3dB,电压增益为28dB, CP1为-12dBm。然而,2.14GHz的LNA噪声系数为2.71dB,电压增益为17dB, CP1为-4.5dBm。电源电压为2.5V时,功耗为37.5mW
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引用次数: 36
A SystemC AMS model of an 12C bus controller 一个SystemC AMS模型的12C总线控制器
M. Alassir, J. Denoulet, O. Romain, P. Garda
The authors present the design of an intellectual property (IP) modeling the interface controller for an inter-integrated controller channel (I2C) bus. AMS IPs such as bus interfaces, whose behaviour follows the bus protocols in terms of packet structure, timing constraints or control modes can offer solutions for the issue of communications between a system on a chip and its external environment. The model of our controller is written in SystemC in association with a SystemC-AMS description of the analog block. Simulation results are presented
提出了一种基于知识产权(IP)的集成控制器通道(I2C)总线接口控制器建模设计。AMS ip如总线接口,其行为在分组结构、时间限制或控制模式方面遵循总线协议,可以为芯片上系统与其外部环境之间的通信问题提供解决方案。我们的控制器模型是用SystemC编写的,并与模拟块的SystemC- ams描述相关联。给出了仿真结果。
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引用次数: 8
EDP optimized synthesis scheme for Boolean read-once functions EDP优化的布尔一次读函数合成方案
P. Balasubramanian, T. S.
This paper presents a synthesis framework for the important class of non-regenerative Boolean read-once functions (BROF). A two-pronged approach is adopted, where the satisfiability of the circuit functionality with minimum no. of active gates is first given priority. The gate level realizations are then translated into circuit level implementations viz., static CMOS LECTOR and stacked CMOS LECTOR styles, to evaluate the efficacy of our proposition on the basis of energy delay product (EDP) metric. Furthermore, the effect of transistor reordering on the delay of CMOS digital circuits is investigated. The SPICE based simulation results obtained for a modest 0.35mum TSMC process are promising, as it reports 41.5% savings in EDP, 10.5% reduction in power and 17.7% decrease in delay, over the best of conventional methods
本文给出了一类重要的非再生布尔读一次函数的综合框架。采用双管齐下的方法,其中电路功能的满意度与最小的no。活动门的优先级。然后将门级实现转换为电路级实现,即静态CMOS LECTOR和堆叠CMOS LECTOR样式,以基于能量延迟积(EDP)度量来评估我们的命题的有效性。此外,还研究了晶体管重排序对CMOS数字电路延时的影响。基于SPICE的模拟结果显示,与传统方法相比,0.35 μ m TSMC工艺的EDP降低了41.5%,功率降低了10.5%,延迟降低了17.7%
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引用次数: 0
Power aware minimization of complementary logic functions based on maximal HD 基于最大HD的互补逻辑函数的功耗感知最小化
P. Balasubramanian, Y. Sirisha
In this work, the authors consider the problem of logic minimization for a special class of Boolean networks, targeting low power implementation, using static CMOS logic. The authors start by framing a new binary minterm-value (BmV) matrix/binary max term-value (BMV) matrix for a binary 2-tuple, [mi (Mi), mj (Mj)], where HD (mi (Mi), mj (Mj)) is O(n), where n represents the support of a Boolean function. The quality of the resulting circuits, evaluated on the basis of established cost metrics for a modest 0.35mu TSMC CMOS process, demonstrate average savings in power by 14.39% for the samples mentioned in this paper, besides reduction in gate and literal count by 36.59% and 11.35% respectively, over the best of existing methods
在这项工作中,作者考虑了一类特殊的布尔网络的逻辑最小化问题,目标是低功耗实现,使用静态CMOS逻辑。作者首先为二元二元组[mi (mi), mj (mj)]构造了一个新的二进制最小值(BmV)矩阵/二进制最大值(BmV)矩阵,其中HD (mi (mi), mj (mj))为O(n),其中n表示布尔函数的支持度。基于0.35亩TSMC CMOS工艺的既定成本指标对所得电路的质量进行了评估,结果表明,与现有的最佳方法相比,本文中提到的样品平均节省了14.39%的功率,栅极和文字计数分别减少了36.59%和11.35%
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引用次数: 0
Modulation/demodulation techniques with FPGA's architecture to improve OFDM wireless underwater communication transceiver 基于FPGA架构的调制/解调技术改进OFDM无线水下通信收发
N. Nasri, H. Ben Hnia, A. Kachouri, M. Abdellaoui, M. Samet
In order to improve the efficiency multi band OFDM wireless underwater communication, the software technology offers the ability to develop OFDM transceiver architecture and his performance by using an optimal modulation and coding schema. The field programmable gate array (FPGA) represents a solution to have flexible mapping that adjusts several types of modulation. This paper aims to specify a new generic model that supports all modulations required by underwater communication. In order of achieving high-speed data transmission, high data throughputs, and low ratio of errors over many of the underwater channels
为了提高多频带OFDM无线水下通信的效率,该软件技术采用最优的调制和编码方案,提供了开发OFDM收发器体系结构及其性能的能力。现场可编程门阵列(FPGA)代表了一种具有灵活映射的解决方案,可以调整几种调制类型。本文旨在提出一种新的通用模型,支持水下通信所需的所有调制。为了在许多水下信道上实现高速数据传输、高数据吞吐量和低误码率
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引用次数: 7
Verification flow optimization using an automatic coverage driven testing policy 使用自动覆盖驱动的测试策略进行验证流优化
Younes Lahbib, Oualid Missaoui, Maher Hechkel, Dhafer Lahbib, Badreddine Mohamed-Yosri, R. Tourki
SystemC language as well as the verification library going with (SCV), provides a rich set of features for dynamic control and parameterization of the constraints applied to a constrained-random stimulus generator. Besides, the property specification language (PSL) offers facilities for gathering and inspecting functional coverage information. This paper examines how SCV stimulus constraints can be modified dynamically using functional PSL coverage data, with the aim of avoiding the redundancy of stimulus within the regression test suite. In so doing we allow reducing simulation runtime needed to meet planned functional coverage
SystemC语言以及伴随的验证库(SCV)提供了一组丰富的特性,用于动态控制和参数化应用于约束随机刺激生成器的约束。此外,属性规范语言(PSL)提供了收集和检查功能覆盖信息的工具。本文研究了如何使用功能PSL覆盖数据动态修改SCV刺激约束,以避免回归测试套件中刺激的冗余。通过这样做,我们允许减少满足计划功能覆盖所需的模拟运行时
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引用次数: 5
Analyzing the memory effect of resistive open in CMOS random logic 分析CMOS随机逻辑中电阻式开路的记忆效应
M. Renovell, M. Comte, I. Polian, P. Engelke, B. Becker
This paper analyzes the electrical behaviour of resistive opens as a function of its unpredictable resistance. It is demonstrated that the electrical behaviour depends on the value of the open resistance. It is also shown that, due to the memory effect detection of the open by a given vector Ti depends on all the vectors that have been applied to the circuit before Ti. An electrical analysis of this memory effect is presented
本文分析了电阻开路器的电学特性与不可预测电阻的关系。结果表明,电性能取决于开路电阻的值。还表明,由于记忆效应,通过给定矢量Ti检测开路取决于在Ti之前应用于电路的所有矢量。对这种记忆效应进行了电学分析
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引用次数: 7
A non-volatile flip-flop in magnetic FPGA chip 磁性FPGA芯片中的非易失性触发器
W. Zhao, E. Belhaire, V. Javerliac, C. Chappert, B. Dieny
In this paper, the authors propose a non-volatile flip-flop, which presents simultaneously low power dissipation and high speed. This flip-flop is based on MRAM (magnetic RAM) technology on standard CMOS. In this non-volatile flip-flop design, the authors use magnetic tunnel junctions (MTJ) as storage element. Contrary to the complex sense amplifier circuit in standard MRAM circuits, a simple one based on SRAM cell is used to couple with two MTJs per bit in magnetic logic circuit. The flip-flop works exactly as a classical flip-flop hut the information is stored simultaneously in the two MTJs, which makes this flip-flop non-volatile. As the writing frequency has a strong impact on the power consumption, the MTJ writing frequency is designed to be defined by the users depending on different usage. During the startup or reset phase, the flip-flop master stage is used as the MTJ sense amplifier and the flip-flop is initialized to the previously stored state in about 200 ps. This figure has been demonstrated by electrical simulation on a 90 nm CMOS technology and with a complete and precise MTJ model
本文提出了一种低功耗、高速度的非易失性触发器。该触发器基于标准CMOS上的MRAM(磁性RAM)技术。在这种非易失性触发器设计中,作者使用磁隧道结(MTJ)作为存储元件。与标准MRAM电路中的复杂感测放大电路不同,在磁逻辑电路中采用基于SRAM单元的简单感测放大电路,每比特与两个mtj耦合。该触发器的工作原理与经典触发器完全相同,但信息同时存储在两个mtj中,这使得该触发器具有非易失性。由于写入频率对功耗影响较大,因此MTJ写入频率设计为用户根据不同的使用情况自行定义。在启动或复位阶段,触发器主级用作MTJ感测放大器,触发器在大约200 ps的时间内初始化到先前存储的状态。这一数字已通过90 nm CMOS技术和完整精确的MTJ模型的电气仿真证明
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引用次数: 48
Performances evaluation and enhancement of MPEG4 transmission over IEEE 802.11 WLAN MPEG4在IEEE 802.11 WLAN上传输的性能评估与增强
N. Moussa, A. Soudani, R. Tourki
With the increased use and advances in the field of wireless networking, many issues are being confronted. One major issue is the transmission of video and audio over wireless networks. In wireless mobile networks, the range of possible scenarios, and the traffic load generated by their typical applications give principal key aspects that make challenges to select a given routing protocol. In this paper, the authors evaluate the practicality of realizing a wireless network and investigate on performance issues. The authors have tried to simulate different scenarios for wireless networks and compare their performance based on a number of factors. The authors used ns-2 for all our simulations. They tried to quantify the effects of factors like cluster size, routing protocols, packet size and type of traffic, that affect the performance of wireless networks. The impact of these factors will be evaluated on the following perfomance metrics: throughput, end-to-end delay, fitter, loss across different scenarios. This study centres on investigating the results of simulations to propose a new approach relating to the management of a MPEG flow for a wireless link
随着无线网络应用的不断增加和发展,也面临着许多问题。一个主要问题是通过无线网络传输视频和音频。在无线移动网络中,可能场景的范围和典型应用产生的流量负载提供了对选择给定路由协议提出挑战的主要关键方面。在本文中,作者评估了实现无线网络的可行性,并研究了性能问题。作者试图模拟无线网络的不同场景,并根据许多因素比较它们的性能。作者在我们所有的模拟中都使用了ns-2。他们试图量化影响无线网络性能的因素,如集群大小、路由协议、数据包大小和流量类型。这些因素的影响将根据以下性能指标进行评估:吞吐量、端到端延迟、过滤器、跨不同场景的损失。本研究以调查模拟结果为中心,提出一种与无线链路的MPEG流管理有关的新方法
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引用次数: 3
Automated BIST-based diagnostic solution for SOPC 基于bist的SOPC自动诊断解决方案
A. Sarvi, J. Fan
This paper presents a diagnostic methodology to detect and locate faulty embedded cores IP cores in modern FPGAs. Parameterized Verilog models have been developed to apply the algorithm. Built-in sell-test (BIST) generation and synthesis performed in an automated flow for any given device. The approach is applicable to different cores including, block RAM, multiplier, DSP, etc. and is it scalable to different devices. The technique utilizes existing hardware redundancy and reconfigurability of an FPGA to achieve testability and diagnosis resolution without imposing any cost, area overhead or performance degradation. Experimental results show its efficiency in facilitating failure analysis process and expediting debugging procedure. It can also be applied to offline system testing and diagnosis for fault-tolerant applications
本文提出了一种检测和定位现代fpga中出现故障的嵌入式核IP核的诊断方法。已经开发了参数化Verilog模型来应用该算法。内置的销售测试(BIST)生成和合成在一个自动流程中执行任何给定的设备。该方法适用于不同的核心,包括块RAM,乘法器,DSP等,并且可扩展到不同的设备。该技术利用现有的硬件冗余和FPGA的可重构性来实现可测试性和诊断分辨率,而不会带来任何成本、面积开销或性能下降。实验结果表明,该方法可以简化故障分析过程,加快调试过程。它还可以应用于容错应用程序的离线系统测试和诊断
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引用次数: 15
期刊
International Conference on Design and Test of Integrated Systems in Nanoscale Technology, 2006. DTIS 2006.
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