field Programmable Analogue Array (FPAA) technologies can offer an analogue platform for a vast number of applications, including communication circuits requiring adaptive processing. The subject of this paper deals w...
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ISBN:
(纸本)9781424442607
field Programmable Analogue Array (FPAA) technologies can offer an analogue platform for a vast number of applications, including communication circuits requiring adaptive processing. The subject of this paper deals with the problem of generating and processing of base-band communication signals using a reconfigurable platform based on FPAA technology. In the experiments it was used AN221E04 circuit included in Anadigmvortex - AN221K04 development board and connected to PC through a serial interface. Also it was used the software tools from AnadigmDesigner2 that allows complex circuits to be designed with a simple drag-and-drop graphical interface. Especially analog modulators and demodulator were implemented, but the capabilities ofthe circuits offer great possibilities for more elaborated modulation schemes.
In this paper, authors conducted a successful differential power analysis DPA attack on an Advanced Encryption Standard AES hardware implementation on Flash-based FPGA technology. Correlation analysis method is used t...
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In this paper, authors conducted a successful differential power analysis DPA attack on an Advanced Encryption Standard AES hardware implementation on Flash-based FPGA technology. Correlation analysis method is used to reduce DPA attack data processing time. It is chosen between three methods analysing power consumption on DPA attacks. An experimental set-up is defined to implement on an FPGA board critical AES modules and DPA attack. As main contribution, this work proved the success of DPA attack on Flash-based FPGA. Experimental results showed that for different secret key values a maximum of correlation with the correct key is obtained during 20 mn of data processing time.
Coherent optical receivers have the following features: shot-noise-limited receiver sensitivity with sufficient local oscillator (LO) power;high frequency resolution at the intermediate frequency or baseband stage in ...
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We have designed and constructed an 8 channel system for the analog processing, the digitization, the digital processing and acquisition of signals from CdTe / CdZnTe discrete detectors. The system consists of: Discre...
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We have designed and constructed an 8 channel system for the analog processing, the digitization, the digital processing and acquisition of signals from CdTe / CdZnTe discrete detectors. The system consists of: Discrete charge preamplifiers, discrete semi-Gaussian shapers, 8 A/D converters working in parallel, FPGA for the pre-processing of the digital signals, high voltage module, USB link for the PC and software. The detectors can be packaged together with a JFET front end transistor and plugged in the mother board which contains the rest of the charge amplifiers, the shapers and single to differential signal converters. The system can be used for the characterization of the detectors or as a portable instrument for spectroscopy.
Nondestructive evaluation of the gas pipeline system is most commonly performed using magnetic flux leakage (MF L) techniques. A major segment of this network employs seamless pipes. The data obtained from MFL inspect...
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ISBN:
(纸本)0780370414
Nondestructive evaluation of the gas pipeline system is most commonly performed using magnetic flux leakage (MF L) techniques. A major segment of this network employs seamless pipes. The data obtained from MFL inspection of seamless pipes is contaminated by various sources of noise;including seamless pipe noise due to material properties of the pipe, lift -off variation of MFL sensor due to motion of the pipe and system noise due to on board electronics. The noise can considerably reduce the detectability of defect signals in MFL data. This paper presents a new technique for improving the signal-to-noise-ratio in MFL data obtained from seamless pipes. The approach utilizes normalized least mean squares adaptive noise filtering coupled with wavelet shrinkage denoising to minimize the effects of various sources of noise. Results from application of the approach to data from field tests are presented. It is shown that the proposed algorithm is computationally efficient and data independent.
The use of video camera surveillance systems has dramatically increased over recent years. This is due in no small part to the reduction in costs and increased reliability afforded by CCD camera technology. However th...
The use of video camera surveillance systems has dramatically increased over recent years. This is due in no small part to the reduction in costs and increased reliability afforded by CCD camera technology. However the capability of designers and installers has not kept pace with the hardware development. With end users demanding ever reducing costs many systems are designed and installed by electrical engineers who have no training in broadband signal communications. This has led to systems being installed with less than adequate performance or where performance has degraded a year or so down the line. The objective of VIDEQUAL is to provide a fully quantitative measurement of system performance. This is achieved by placing or defining targets in the camera field of view and/or injecting test signals at the camera. Measurements are then made either after the viewing monitor or directly from the output of the video switcher. It is intended that the measuring equipment employs standard PC architecture using a commercial video signal capture board to acquire an image for processing. Dependant on the application this image could be stored for future reference or audit purposes. The measurements are chosen to best reflect the system performance and should be simple to make and be easy to understand. The output from the equipment is in the form of either a screen display or a printed report. Where the equipment is undertaking an automatic comparison an audible/digital alarm would be provided
A Digital Audio Broadcasting (DAB) Satellite System provides optimized service and guarantees a high-grade quality service for hundreds of channels. With minimum cost of the radio set and the broadcasting station, thi...
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A Digital Audio Broadcasting (DAB) Satellite System provides optimized service and guarantees a high-grade quality service for hundreds of channels. With minimum cost of the radio set and the broadcasting station, this greatly improves radio broadcasting services worldwide, especially in areas involving difficult deployment of conventional relay infrastructures. This paper illustrates the advantages and the feasibility of a DAB system based on geostationary satellites with on-boardprocessinggeneratingsignals of multiple channel per carrier (MCPC) type.
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