2014 IEEE Dallas Circuits and Systems Conference (DCAS)最新文献

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Study on the effectiveness of a Weighted Pseudo Linear approach to emitter localization 加权伪线性方法对发射极定位的有效性研究
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965340
Joshua Stone, Willis Troy, M. Thompson
{"title":"Study on the effectiveness of a Weighted Pseudo Linear approach to emitter localization","authors":"Joshua Stone, Willis Troy, M. Thompson","doi":"10.1109/DCAS.2014.6965340","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965340","url":null,"abstract":"The problem of emitter localization is studied using a Weighted Pseudo-Linear Estimation (WPLE) approach. In certain localization applications, each angle-of-arrival (AOA) measurement also contains side information indicative of the quality of each measurement. Furthermore, a two-stage location approach allows the weighting scheme to also incorporate the emitter range. In this paper we apply and simulate the performance of a two-step approach for applying a Weighted Pseudo-Linear Estimation (WPLE) method toward the location of a fixed emitter for a specific geometric case. The weighting scheme allows the inclusion of both measurement quality and emitter range. A simulation study shows the unweighted estimates to be 4.8 to 6 times larger than the estimates produced by this two-stage WPLE process. Furthermore, the need for outlier mitigation is illustrated by simulation results where the presence of outliers significantly reduces the emitter location accuracy.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"337 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132435143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Resonant coupling analysis for a two-coil wireless power transfer system 双线圈无线电力传输系统的谐振耦合分析
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965345
R. Jay, S. Palermo
{"title":"Resonant coupling analysis for a two-coil wireless power transfer system","authors":"R. Jay, S. Palermo","doi":"10.1109/DCAS.2014.6965345","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965345","url":null,"abstract":"Inductive or non-radiative wireless power transfer (WPT) is a popular short range power delivery mechanism for transcutaneous biomedical implants. In this work, the relative performance of a two-coil WPT system is analyzed with each of the coils in series or parallel resonance. This analysis helps in choosing the optimum resonance configuration for a given pair of coils that can maximize the efficiency of the WPT system. The analysis described in this work shows that for a given pair of coils at a fixed distance apart and with the transmitter coil driven by a source with significant impedance, choosing parallel resonance configuration at the transmitter and receiver coils can offer up to 20dB and 25dB higher efficiencies respectively when compared to the series configurations. Thus, there is scope for improving the WPT efficiency with a simple rearrangement of the circuit components.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125009931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Radix-2h online floating point multipliers 基数-2h在线浮点乘法器
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965332
G. Joseph, R. Devanathan
{"title":"Radix-2h online floating point multipliers","authors":"G. Joseph, R. Devanathan","doi":"10.1109/DCAS.2014.6965332","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965332","url":null,"abstract":"Digital signal processing hardware uses digit serial arithmetic when latency can be traded off for higher clock speeds, resource and input-output utilization. Floating-point representations are important when dealing with very large data sets or sets where data range may be unpredictable as these representations may have a larger dynamic range. Field Programmable Gate Array architectures make them suitable as hardware accelerators for implementing high performance floating-point computations. In this paper, a number of improved designs for Radix-2h online floating-point multiplication are presented, analysed and compared on the basis of latency, throughput, cycle time and resource utilization. The architecture of a novel online floating-point multiplier using an interleaved number representation that results in an increased throughput and has the advantage of carrying out normalization for overflow with reduction in cycle time, resource utilization and latency is also presented.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Energy-efficient imprecise reconfigurable computing through probabilistic domain transformation 基于概率域变换的节能非精确可重构计算
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965329
Mohammed Alawad, Mingjie Lin
{"title":"Energy-efficient imprecise reconfigurable computing through probabilistic domain transformation","authors":"Mohammed Alawad, Mingjie Lin","doi":"10.1109/DCAS.2014.6965329","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965329","url":null,"abstract":"Many DSP applications naturally possess so-called “inherent error resilience”, meaning certain degrees of computational errors would not noticeably impair their eventual quality of results. Such a phenomenon offers an interesting opportunity to significantly improve the overall energy efficiency of these DSP applications at the cost of minute degradations in computing accuracy. This work presents a probabilistic-based methodology to perform high-performance DSP applications while achieving low power consumption. Deviating from all published approximate computing methods, our solution leverages a fundamental probability principle to implement a reconfigurable finite impulse response FIR digital filter specifically designed for FPGA-based image and video processors. Our method is trading off performance efficiency and power consumption against accuracy of the output results. To validate this proposed probabilistic architecture for discrete FIR filter, We have developed a 16-tap FIR filter with Virtex 5 FPGA devices (XC5VSX95T-1FF1136). Our prototype of probabilistic-based reconfigurable FIR filter consumes 9 times less power than multiplier-based FIR filter and dissipates 43.13 μJ in dynamic energy consumption to perform filtering on a (256×256) pixel image. We believe that this new architecture can be exploited in all the real-time applications in which energy-efficient FIR filters are required and it can be realized with many other FPGA device families.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128272508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Predicting ADC: A new approach for low power ADC design 预测ADC:低功耗ADC设计的新方法
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965323
Nicholas Wood, Nan Sun
{"title":"Predicting ADC: A new approach for low power ADC design","authors":"Nicholas Wood, Nan Sun","doi":"10.1109/DCAS.2014.6965323","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965323","url":null,"abstract":"In this paper we present a scaling friendly supplement to ADC designs which can produce increases in conversion speed and power efficiency by attempting to predict the value of the next sample. To accomplish this we use a first order difference equation to predict the values of several of the bits in the next sample. In doing so, we can save power by reducing the number of comparisons and by reducing the capacitor array switching power.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131467175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 14
28 nm Charge sensitive preamplifier using 1 GΩ dual PMOS feedback resistor operating in the weak inversion region 28纳米电荷敏感前置放大器,采用1个GΩ双PMOS反馈电阻,工作在弱反转区
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965318
Mahmoud Hassan, Hazem W. Marar
{"title":"28 nm Charge sensitive preamplifier using 1 GΩ dual PMOS feedback resistor operating in the weak inversion region","authors":"Mahmoud Hassan, Hazem W. Marar","doi":"10.1109/DCAS.2014.6965318","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965318","url":null,"abstract":"We are reporting for the first time a novel design methodology for a small size, low power, charge sensitive preamplifier operating in the weak inversion region using 28 nm CMOS technology. This preamplifier will be suitable for room temperature semiconductor nuclear radiation detectors needed for portable applications, medical imaging and future nano-scale medical instruments. The weak inversion MOSFET region allows to design a GΩ feedback resistor using one or two PMOS transistors with almost negligible size and power consumption. This GΩ resistor will enhance the operation of the preamplifier and maximize charge collection. The total size of the reported preamplifier is 55.25 μm2 and its power consumption is 13nW (including current source).","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114691437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Variation resilient high performance and low voltage single ended sense amplifier 可变弹性高性能低电压单端感测放大器
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965324
R. S. Rao, Shahid Ali
{"title":"Variation resilient high performance and low voltage single ended sense amplifier","authors":"R. S. Rao, Shahid Ali","doi":"10.1109/DCAS.2014.6965324","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965324","url":null,"abstract":"Sense Amplifier is an essential component in an embedded memory. Multiple voltage mode sensing techniques have been developed for embedded SRAMs where differential on bitlines is sensed and amplified to read the data from SRAM bitcell. Unlike SRAMs, embedded CMOS Read Only Memories (ROMs) have unique challenges. ROM cell is typically a single NMOS transistor and hence differential voltage is not available for ROM bit sensing. For area efficiency, a large number of bitcells is stitched on the bitline. This creates an additional bottleneck for ROM sensing where sense amplifier has to sense the data correctly for the least Ion (`ON' current of a transistor) and for the maximum Ioff (`OFF' current of transistors on a bitline). Process variation, device mismatch and temperature adversely affect Ion to Ioff ratio imposing further constraint to ROM sensing. Additionally, large bitline capacitance limits the ROM performance. As ROM bitline pitch is extremely limited, sense amplifier has to fit into the restricted layout area. Low Voltage operation adds to the list of challenges. Novel Sense Amplifier techniques need to address these challenges. This paper describes sensing techniques to overcome ROM specific problems; Supplemented Inverter based Sense Amplifier (SISA) has been introduced and compared against Diode Mirrored Resistive Sense Amplifier (DMRS). SISA is implemented in 28nm Low Power process node. This sense amplifier is proven in Silicon and works across splits down up to 0.7v. 2ns access time is achieved for 1Mb instance. SISA is also proven in multiple other ultra-low power technology nodes.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129678452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A loop-breaking method for simulation of feedback circuits using a VCVS-terminated subnetwork model 一种用vcvs终止子网络模型模拟反馈电路的破环方法
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965317
H. T. Russell, R. Carter, W. Davis
{"title":"A loop-breaking method for simulation of feedback circuits using a VCVS-terminated subnetwork model","authors":"H. T. Russell, R. Carter, W. Davis","doi":"10.1109/DCAS.2014.6965317","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965317","url":null,"abstract":"A model for a multi-terminal subnetwork is applied in a loop-breaking method for open and closed-loop analysis of feedback circuits. The model contains two physically disconnected subnetworks having specific terminals connected to grounded voltage-controlled voltage sources (VCVS). Gain pa-rameters of the VCVSs control signal transfer through the model allowing a feedback loop to be opened or closed in a switch-like manner. The method is applied in circuit analysis and simulation where closed-loop dc bias conditions are imposed on the open-loop circuit. Small-signal analysis of the equivalent circuit produces Bode's return-ratio and return difference corresponding to the modeled component.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131226448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement in IEEE 1500 standard for at-speed test and debug IEEE 1500标准中高速测试和调试的改进
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965327
Ghazanfar Ali, F. Hussin, N. B. Z. Zain Ali, N. H. Hamid, R. Adnan
{"title":"Enhancement in IEEE 1500 standard for at-speed test and debug","authors":"Ghazanfar Ali, F. Hussin, N. B. Z. Zain Ali, N. H. Hamid, R. Adnan","doi":"10.1109/DCAS.2014.6965327","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965327","url":null,"abstract":"IEEE 1500 standard provides the facility to test and debug embedded cores with the use of an on-board or off-board tester. So far all the developments in IEEE 1500 standard are for testing application in the test mode. No development in IEEE 1500 standard is proposed where IEEE 1500-compliant cores can be tested in functional mode of operation. In this paper, an enhancement of the IEEE 1500 standard for functional test and debug is proposed. As a case study, the proposed enhanced IEEE 1500 standard is implemented and validated on a SAYEH processor using embedded Software Based Self-Testing (SBST) technique. The case study demonstrated that the enhancement in IEEE 1500 standard enables it to be used for at-speed test and debug with increased observability.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123747017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Real-time active noise control of multi-tones and MRI acoustic noise in fMRI bore with signal decomposition and parallel hybrid RLS-NLMS adaptive algorithms 基于信号分解和并行混合RLS-NLMS自适应算法的fMRI多音和MRI噪声实时主动控制
2014 IEEE Dallas Circuits and Systems Conference (DCAS) Pub Date : 2014-11-24 DOI: 10.1109/DCAS.2014.6965339
Sri Hari Krishna Vemuri, Anshuman Ganguly, I. Panahi
{"title":"Real-time active noise control of multi-tones and MRI acoustic noise in fMRI bore with signal decomposition and parallel hybrid RLS-NLMS adaptive algorithms","authors":"Sri Hari Krishna Vemuri, Anshuman Ganguly, I. Panahi","doi":"10.1109/DCAS.2014.6965339","DOIUrl":"https://doi.org/10.1109/DCAS.2014.6965339","url":null,"abstract":"This paper presents a real-time implementation of a cost-effective adaptive feedback Active Noise Control (FANC) method for attenuating acoustic multi-tone noise and functional Magnetic Resonance Imaging (fMRI) acoustic noise in a fMRI bore test-bed. Periodic property of the signal is used to decompose it into dominant periodic components and residual random components using linear prediction (LP) filtering. After decomposition, a hybrid combination of Recursive Least Squares (RLS) and Normalized Least Mean Squares (NLMS) filters is used to effectively attenuate each of the periodic and random components of noise separately. Real time implementation of proposed FANC method on fMRI test bed is discussed and Noise attenuation levels (NAL) obtained are presented which support the effectiveness of the FANC method in practice.","PeriodicalId":138665,"journal":{"name":"2014 IEEE Dallas Circuits and Systems Conference (DCAS)","volume":"419 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115242616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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