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GPU Approach to FPGA placement based on star+ 基于星形+的GPU FPGA布局方法
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328998
C. Fobel, G. Grewal, Robert Collier, D. Stacey
{"title":"GPU Approach to FPGA placement based on star+","authors":"C. Fobel, G. Grewal, Robert Collier, D. Stacey","doi":"10.1109/NEWCAS.2012.6328998","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328998","url":null,"abstract":"While simulated-annealing is currently the most widely used method for performing FPGA placement, it does not scale to very large designs. Modern many-core architectures (including GPUs) offer a promising alternative to traditional multi-core processors for improving runtime performance. In this work, we propose a GPU-accelerated simulated-annealing variant for FPGA placement. Our approach uses the Star+ wirelength model along with a novel method of efficiently generating large sets of independent swap operations, providing a high level of parallelism. Speedups from 5.4-89.2× (median 20.2×) were achieved over a single-core CPU-only implementation.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116787153","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
SoNET: A delay-tolerant geo-sensor network for environmental monitoring SoNET:一种用于环境监测的容延迟地球传感器网络
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328995
F. Farahmand, Pei-Lun Yu, J. Ou, J. Rodrigues
{"title":"SoNET: A delay-tolerant geo-sensor network for environmental monitoring","authors":"F. Farahmand, Pei-Lun Yu, J. Ou, J. Rodrigues","doi":"10.1109/NEWCAS.2012.6328995","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328995","url":null,"abstract":"This paper proposes a delay-tolerant based mobile sensing network for monitoring microclimates in Sonoma county, called SoNET. The network utilizes distributed nodes with heterogeneous sensing capacity to create a rich collection of ecological data about climatic variations in the country. Using ZigBee-based communication protocols, mobile nodes in SoNET can exchange data and ensure data penetration to the weather server. Through experimental measurements, in this paper we demonstrate that SoNET can be an effective alternative to deploying expensive individual climate stations or challenging dense sensor networks. We also evaluate the performance of our proposed protocols for data exchange between mobile nodes.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121726038","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
A cycle-accurate transaction-level modelled energy simulation approach for heterogeneous Wireless Sensor Networks 一种周期精确的异构无线传感器网络事务级建模能量仿真方法
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328993
M. Galos, D. Navarro, F. Mieyeville, I. O’Connor
{"title":"A cycle-accurate transaction-level modelled energy simulation approach for heterogeneous Wireless Sensor Networks","authors":"M. Galos, D. Navarro, F. Mieyeville, I. O’Connor","doi":"10.1109/NEWCAS.2012.6328993","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328993","url":null,"abstract":"Wireless Sensor Networks are networks made up of tiny sensor nodes, in medium to large quantities, from several tens to hundreds and even thousands. They are used in fields ranging from military, medical, to structural health monitoring for buildings for example. We have introduced an instruction set simulator in our IDEA1 WSN design framework to account for a fine-grained representation of the software running on the node hardware. We modelled the communication between the nodes' microcontrollers and their radio interface and microcontroller and sensor, respectively. This was done at transaction level by use of the SystemC simulation kernel. An application was developed, consisting of eight nodes compressing this abstract and sending it to their coordinator.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125707918","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: 5
Computational SAR ADC for a 3D CMOS image sensor 用于三维CMOS图像传感器的计算式SAR ADC
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6329025
A. Verdant, A. Dupret, M. Tchagaspanian, A. Peizerat
{"title":"Computational SAR ADC for a 3D CMOS image sensor","authors":"A. Verdant, A. Dupret, M. Tchagaspanian, A. Peizerat","doi":"10.1109/NEWCAS.2012.6329025","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6329025","url":null,"abstract":"The architecture and simulation of a Computational SAR ADC (C-SAR) dedicated to the processing of image descriptors for a 3D CMOS image sensor are reported here. The differential charge sharing architecture enables to A/D convert the convolution of multiple binary weighted pixels signals on multi-scale kernels. The CMOS image sensor is constituted of two tiers. An array of C-SAR is implemented on the bottom layer. Each C-SAR is associated to a square of 8×8 pixels on the top layer, with a pitch of 10μm and a fill factor of 80%. With regard to a standard differential SAR ADC, only multiplexing facilities are added in the C-SAR. This area over cost is 10 times lower than the surface induced by the memory required for a counterpart digital architecture. The total noise of 458μVRMS simulated at transistor level on a 65nm technology enables to reach a processing resolution of 9 signed bits on 0.5V pixels dynamic. As the processing is done within the conversion stage, no additional time is needed. With a power consumption of 400μW and a bandwidth of 1 mega-convolution per second, this processing architecture outputs a FOM of 6.25pJ/pixel.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114225660","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 compact wide scanning directional antenna for RFID passive tags 一种用于RFID无源标签的小型宽扫描定向天线
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6329021
A. Sawadi, R. Rashidzadeh, S. Erfani, M. Ahmadi
{"title":"A compact wide scanning directional antenna for RFID passive tags","authors":"A. Sawadi, R. Rashidzadeh, S. Erfani, M. Ahmadi","doi":"10.1109/NEWCAS.2012.6329021","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6329021","url":null,"abstract":"This paper presents a new antenna design for passive RFID tags operating at super high frequency band. The proposed antenna includes a cross-array of five elements supporting beam-scanning range over two perpendicular directions. The beam-scanning capability allows the tag to communicate over longer distances without demanding extra power. A matching network between antenna elements and front-end circuitry has also been designed to eliminate phase shift. 3D full-wave electromagnetic simulation results using HFSS CAD tool indicate that the proposed antenna supports 10 dB gain and beam-scanning of more than 180° over two planes which can be exploited to provide location positioning services.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126691822","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: 2
Prediction of hot-spots in protein sequences using statistically optimal null filters 利用统计最优零滤波器预测蛋白质序列中的热点
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328971
Rajasekhar Kakumani, M. Ahmad, V. Devabhaktuni
{"title":"Prediction of hot-spots in protein sequences using statistically optimal null filters","authors":"Rajasekhar Kakumani, M. Ahmad, V. Devabhaktuni","doi":"10.1109/NEWCAS.2012.6328971","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328971","url":null,"abstract":"The knowledge of hot-spots locations in protein sequences is crucial for understanding protein functionality. It is known that the hot-spots exhibit a characteristic frequency corresponding to their biological function. In this paper, a new technique using a statistically optimal null filter (SONF) is proposed to predict the locations of hot-spots in proteins. The technique involves detecting the characteristic frequency corresponding to hot-spots of interest. This is achieved using an instantaneous matched filter in SONF which increases the signal-to-noise ratio and the estimation is further improved by using a least squared optimization. Through examples it is shown that the proposed technique is more accurate and reliable as compared to the popular modified Morlet wavelet technique.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133324376","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: 2
A miniaturized autonomous microsystem for hydrogen gas sensing applications 用于氢气传感应用的小型化自主微系统
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328991
Naser Khosro Pour, F. Krummenacher, M. Kayal
{"title":"A miniaturized autonomous microsystem for hydrogen gas sensing applications","authors":"Naser Khosro Pour, F. Krummenacher, M. Kayal","doi":"10.1109/NEWCAS.2012.6328991","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328991","url":null,"abstract":"This paper presents a fully integrated, ultra-low power microsystem that is used for hydrogen gas sensing in an autonomous wireless sensor node. The proposed circuit harvests solar energy from a micro-power photovoltaic module to measure temperature and hydrogen concentration and transmits the measured value using wireless data transmission. A rechargeable NiMH microbattery is used to store harvested energy. Photovoltaic module charges this microbattery, using a highly area- and power-efficient power management circuit. In order to measure hydrogen concentration, conductance change of a miniaturized palladium nanowire sensor is measured and converted to a digital signal with 12-bit resolution, using an area-efficient readout circuit. The proposed microsystem has been implemented in a 0.18μm CMOS process and occupies a core area of only 0.47mm2. This circuit features a low current consumption of 200nA for power management circuit and an additional 1.1μA for sensor interface circuit. It operates with low power supply voltage in the 0.8V to 1.6V range.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134073343","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
A review on low-complexity structures and algorithms for the correction of mismatch errors in time-interleaved ADCs 时间交错adc中低复杂度结构和错配误差校正算法的研究进展
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6329028
Christian Vogel, M. Hotz, S. Saleem, Katharina Hausmair, Michael Soudan
{"title":"A review on low-complexity structures and algorithms for the correction of mismatch errors in time-interleaved ADCs","authors":"Christian Vogel, M. Hotz, S. Saleem, Katharina Hausmair, Michael Soudan","doi":"10.1109/NEWCAS.2012.6329028","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6329028","url":null,"abstract":"In this paper we review the progress in the design of low-complexity digital correction structures and algorithms for time-interleaved ADCs over the last five years. We devise a discrete-time model, state the design problem, and finally derive the algorithms and structures. In particular, we discuss efficient algorithms to design time-varying correction filters as well as iterative structures utilizing polynomial based filters. Finally, we give an outlook to future research questions.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132333253","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: 17
A 900MHz RF energy harvesting module 900MHz射频能量采集模块
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6329052
T. Taris, V. Vigneras, L. Fadel
{"title":"A 900MHz RF energy harvesting module","authors":"T. Taris, V. Vigneras, L. Fadel","doi":"10.1109/NEWCAS.2012.6329052","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6329052","url":null,"abstract":"This paper presents a guideline to design and optimize a RF energy harvester operating in ISM Band at 902 MHz. The circuit is implemented on a standard FR4 board with commercially available off-the-shelf devices. The topology of the impedance transformation block is selected to reduce the losses which improves the overall performances of the system. The characterization of the harvesting module shows sensitivity of -22.5 dBm for a dc output voltage of 200 mV up to -11 dBm for 1.08 V. A wireless power transmission in an indoor environment is measured with a radiated source power of 16.8 dBm. The harvester exhibits a DC rectified voltage of 1.25 V at 0.5 meter and still 500 mV at 1.5 meter.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123234342","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: 40
Transistor sizing and gate sizing using geometric programming considering delay minimization 考虑延迟最小化的几何规划晶体管尺寸和栅极尺寸
10th IEEE International NEWCAS Conference Pub Date : 2012-06-17 DOI: 10.1109/NEWCAS.2012.6328962
G. Posser, G. Flach, G. Wilke, R. Reis
{"title":"Transistor sizing and gate sizing using geometric programming considering delay minimization","authors":"G. Posser, G. Flach, G. Wilke, R. Reis","doi":"10.1109/NEWCAS.2012.6328962","DOIUrl":"https://doi.org/10.1109/NEWCAS.2012.6328962","url":null,"abstract":"A comparison between gate sizing and transistor sizing to analyze the trade-off between execution time and minimum delay achieved is presented in this work. The transistor and gate sizing tools are based on Geometric Programming (GP) and delay is calculated using the Elmore delay model. Tests were made mapping ISCAS'85 benchmark circuits for 45nm technology considering delay minimization. First, circuits were mapped to a typical standard cell library. Then, the gate sizing and transistor sizing were performed. Gate sizing reduced the delay by 21%, in average, for a same area and power values of the sizing provided by standard-cells library. After transistor sizing reduced delay by 40.4% and power consumption by 2.9%, in average, compared with gate sizing. However, transistor sizing requires a bigger computing time, using a number of variables twice higher than with gate sizing.","PeriodicalId":122918,"journal":{"name":"10th IEEE International NEWCAS Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121827948","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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