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检索条件"任意字段=Proceedings of the 2016 ACM/SIGDA International Symposium on Field-Programmable Gate Arrays"

共 642 条记录，以下是161-170 订阅

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The BOX-LASSO with Application to GSSK Modulation in Massive MIMO Systems

The BOX-LASSO with Application to GSSK Modulation in Massive...

引用

IEEE international symposium on Information Theory (ISIT)

作者： Ben Atitallah, Ismail Thrampoulidis, Christos Kammoun, Abla Al-Natiouri, Tareq Y. Alouini, Mohamed -Slim Hassibi, Babak KAUST Thuwal Saudi Arabia MIT Cambridge MA 02139 USA CALTECH Pasadena CA 91125 USA

ISBN: (纸本)9781509040964

The BOX-LASSO is a variant of the popular LASSO that includes an additional box-constraint. We propose its use as a decoder in modern Multiple Input Multiple Output (MIMO) communication systems with modulation methods such as the Generalized Space Shift Keying (GSSK) modulation, which produces constellation vectors that are inherently sparse and with bounded elements. In that direction, we prove novel explicit asymptotic characterizations of the squared-error and of the per-element error rate of the BOX-LASSO, under iid Gaussian measurements. In particular. the theoretical predictions can be used to quantity the improved performance of the BOX-LASSO, when compared to the previously used standard LASSO. We include simulation results that validate both these premises and our theoretical predictions.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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Hierarchical identification with pre-processing

Hierarchical identification with pre-processing

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2017 IEEE international symposium on Information Theory, ISIT 2017

作者： Vu, Minh Thanh Oechtering, Tobias J. Skoglund, Mikael Department of Information Science and Engineering KTH-Royal Institute of Technology Sweden

ISBN: (纸本)9781509040964

We study a two-stage identification problem with pre-processing to enable efficient data retrieval and reconstruction. The first stage outputs a list of compatible users to the second stage which uses it to return the exact user identity with a corresponding reconstruction sequence. The ratedistortion region is characterized. A connection to a two observer identification problem is also studied. © 2017 IEEE.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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Towards PVT-Tolerant Glitch-Free Operation in FPGAs 16

Towards PVT-Tolerant Glitch-Free Operation in FPGAs

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acm/sigda international symposium on field-programmable gate arrays (FPGA)

作者： Huda, Safeen Anderson, Jason Univ Toronto Dept Elect & Comp Engn Toronto ON Canada

ISBN: (纸本)9781450338561

Glitches are unnecessary transitions on logic signals that needlessly consume dynamic power. Glitches arise from imbalances in the combinational path delays to a signal, which may cause the signal to toggle multiple times in a given clock cycle before settling to its final value. In this paper, we propose a low-cost circuit structure that is able to eliminate a majority of glitches. The structure, which is incorporated into the output buffers of FPGA logic elements, suppresses pulses on buffer outputs whose duration is shorter than a configurable time window (set at the time of FPGA configuration). Glitches are thereby eliminated "at the source" ensuring they do not propagate into the high-capacitance FPGA interconnect, saving power. An experimental study, using Altera commercial tools for power analysis, demonstrates that the proposed technique reduces 70% of glitches, at a cost of 1% reduction in speed performance.

关键词： field programmable gate arrays (FPGA)

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Reconfigurable Thermoelectric Generators for Vehicle Radiators Energy Harvesting 22

Reconfigurable Thermoelectric Generators for Vehicle Radiato...

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22nd IEEE/acm international symposium on Low Power Electronics and Design (ISLPED)

作者： Baek, Donkyu Ding, Caiwen Lin, Sheng Shin, Donghwa Kim, Jaemin Lin, Xue Wang, Yanzhi Chang, Naehyuck Korea Adv Inst Sci & Technol Daejeon South Korea Syracuse Univ Syracuse NY USA Yeungnam Univ Gyongsan South Korea Seoul Natl Univ Seoul South Korea Northeastern Univ Boston MA 02115 USA

ISBN: (纸本)9781509060238

Conventional internal combustion engine vehicles (ICEV) generally have less than a 30% of fuel efficiency, and the most wasted energy is dissipated in the form of heat energy. The heat energy maintains the engine temperature for efficient combustion as a good aspect, but the amount of heat generation is excessive and eventually breaks the engine components unless advanced cooling system technologies are supported such as high- capacity radiators, elaborated water jackets, high- flow rate coolant pumps, etc. The excessive heat dissipation plays a key role on a poor fuel economy, but reclamation of the heat energy has not been a main focus of vehicle design. This work is first to propose a cross-layer, system-level solution to enhance thermoelectric generator (TEG) array efficiency introducing online reconfiguration of TEG modules. The proposed method is useful to any sort of TEG array to reclaim wasted heat energy because cooling and exhaust systems generally have different inlet and outlet temperatures. In this paper, we deploy the proposed method to vehicle radiator heat energy harvesting, which does not affect the vehicle performance while exhaust heat energy harvesting may disturb the combustion and emission control integrity. We introduce a novel TEG reconfiguration and maximize the TEG array output in spite of dynamic change of the coolant flow rate and temperature, which results in a huge variation in the coolant temperature distribution of inside the radiator. The proposed method enables all the TEG modules to run at or close to their maximum power points (MPP) under dynamically changing vehicle operating conditions. Experimental results show up to a 34% enhancement compared with a fixed array structure, which is a common practice.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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TanDEM-X Mission Status and Final DEM Performance 18

TanDEM-X Mission Status and Final DEM Performance

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18th international Radar symposium (IRS)

作者： Bueso-Bello, Jose-Luis Wecklich, Christopher Borla-Tridon, Daniela Gonzalez, Carolina Martone, Michele Kraus, Thomas Bachmann, Markus Rizzoli, Paola Zink, Manfred German Aerosp Ctr DLR Microwaves & Radar Inst Munchener Str 20 D-82234 Wessling Germany

ISBN: (纸本)9783736993433

The TanDEM-X mission has opened a new era in spaceborne radar remote sensing. Its primary objective, the acquisition and generation of a global Digital Elevation Model (DEM) with 12 m horizontal resolution and 2 m relative height accuracy, has been completed in autumn 2016. Since the end of 2010 the two twin synthetic aperture radar (SAR) satellites TerraSAR-X and TanDEM-X have been flying in a controlled close orbit formation. The resulting large single-pass SAR interferometer allowed to map the complete Earth's land surface at least twice. Moreover, the flexibility offered by both SAR instruments in terms of imaging, interferometric, and polarization modes, has been further exploited to serve several secondary mission objectives, e.g. acquisitions based on along-track interferometry as well as new bistatic SAR techniques. In this paper, we present the current status and activities within the mission and the quality assessment of the final TanDEM-X global DEM.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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A Minimal Set of Shannon-type Inequalities for Functional Dependence Structures

A Minimal Set of Shannon-type Inequalities for Functional De...

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IEEE international symposium on Information Theory (ISIT)

作者： Thakor, Satyajit Chan, Terence Grant, Alex Indian Inst Technol Sch Comp & Elect Engn Mandi India Univ South Australia Inst Telecommun Res Adelaide SA Australia Myriota Pty Ltd Cambridge ON Canada

ISBN: (纸本)9781509040964

The minimal set of Shannon-type inequalities (referred to as elemental inequalities), plays a central role in determining whether a given inequality is Shannon-type. Often, there arises a situation where one needs to check whether a given inequality is a constrained Shannon-type inequality. Another important application of elemental inequalities is to formulate and compute the Shannon outer bound for multi-source multi-sink network coding capacity. Under this formulation, it is the region of feasible source rates subject to the elemental inequalities and network coding constraints that is of interest. Hence it is of fundamental interest to identify the redundancies induced amongst elemental inequalities when given a set of functional dependence constraints. In this paper, we characterize a minimal set of Shannon-type inequalities when functional dependence constraints are present.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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A Highly Scalable and Efficient Parallel Design of N-Body Simulation on FPGA 31

A Highly Scalable and Efficient Parallel Design of N-Body Si...

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31st IEEE international Parallel and Distributed Processing symposium Workshops (IPDPS)

作者： Del Sozzo, Emanuele Di Tucci, Lorenzo Santambrogio, Marco D. Politecn Milan Dipartimento Elettron Informaz & Bioingn Milan Italy

ISBN: (纸本)9780769561493

N-Body simulation simulates the evolution of a system that is composed of N particles, where each element receives a force that is due to the interaction with all the other elements within the system. Usually, the influence of external physical forces, such as gravity, is involved too. This methodology is widely used in different fields that range from astrophysics, where it is used to study the interaction of celestial objects, to molecular dynamics, where the bodies are represented by molecules. Although its wide range of applicability, the algorithm presents a high computational complexity that requires the usage of powerful and high power consuming computers. An acceleration on a reconfigurable device, such as an FPGA, would benefit both in term of performance and power consumption. In this work we presents a scalable, high performance and highly efficient implementation of an N-Body simulation algorithm on FPGA. The final design is able to outperform both CPU and FPGA works in the state of the art in terms of pure performance of a factor up to 10x, and high-end GPUs in terms of performance per watt by a factor of 1.84x.

关键词： field programmable gate arrays N-Body Simulation Scalable Architecture Efficient Hardware Architecture Semi-Dataflow Architecture

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A High-SNR Normal Approximation for Single-Antenna Rayleigh Block-Fading Channels

A High-SNR Normal Approximation for Single-Antenna Rayleigh ...

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IEEE international symposium on Information Theory (ISIT)

作者： Lancho, Alejandro Koch, Tobias Durisi, Giuseppe Univ Carlos III Madrid Leganes Spain Gregorio Maranon Hlth Res Inst Madrid Spain Chalmers Univ Technol Gothenburg Sweden

ISBN: (纸本)9781509040964

This paper concerns the maximal achievable rate at which data can be transmitted over a non-coherent, single antenna, Rayleigh block-fading channel using an error-correcting code of a given blocklength with a block-error probability not exceeding a given value. In particular, a high-SNR normal approximation of the maximal achievable rate is presented that becomes accurate as the signal-to-noise ratio (SNR) and the number of coherence intervals L over which we code tend to infinity. Numerical analyses suggest that the approximation is accurate already at SNR values of 15 dB.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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On the Degrees of Freedom of Wide-Band Multi-Cell Multiple Access Channels With No CSIT

On the Degrees of Freedom of Wide-Band Multi-Cell Multiple A...

引用

IEEE international symposium on Information Theory (ISIT)

作者： Jeon, Yo-Seb Lee, Namyoon Tandon, Ravi POSTECH Future IT Innovat Lab Pohang 37673 Gyeongbuk South Korea POSTECH Dept Elect Engn Pohang 37673 Gyeongbuk South Korea Univ Arizona Dept Elect & Comp Engn Tucson AZ 85721 USA

ISBN: (纸本)9781509040964

This paper considers a K-cell multiple access channel with inter-symbol interference (ISI). The primary finding of this paper is that, without instantaneous channel state information at a transmitter, the interference-free sum degrees of freedom of K is asymptotically achievable when the number of users per cell is sufficiently large, and also when the number of channel-impulse-response taps of desired links is greater than that of interfering links. This achievability is shown by a blind interference management method that exploits the relativity in delay spreads between desired and interfering links.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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Multi-Channel Partial Power DC-DC Converter for Current Balancing of LED strings 26

Multi-Channel Partial Power DC-DC Converter for Current Bala...

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26th IEEE international symposium on Industrial Electronics (ISIE)

作者： Zapata, Jaime W. Meynard, Thierry A. Kouro, Samir Univ Tecn Federico Santa Maria Elect Engn Dept Valparaiso Chile Univ Toulouse Inst Natl Polytech Toulouse Toulouse France

ISBN: (纸本)9781509014125

The light-emitting diode (LED) technology is reaching a high penetration in commercial applications oriented to illumination. However, there are some problems associated when the application requires a high output power. The problems are related to the connection of several LED units to reach the voltage and current levels. The voltage-current characteristic of the LEDs is not always the same, specially when a failure occurs. Therefore, when some strings are connected in parallel, the illumination is not uniform if the same voltage is applied to all strings. For that reason, in this paper a multi-channel current balancing driver is proposed. The driver is based on a partial power DC-DC converter architecture. It performs current balancing handling only a portion of the total power delivered by the source, reaching an increased efficiency. Besides, due to the modularity of the architecture, it allows the parallel connection of as many strings as required to use for high power application. Simulations are performed in order to evaluate the converter performance.

关键词： Estimation field programmable gate arrays OFDM Modulation Filtration Clocks Signal processing algorithms

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