The novel digital-to-analog conversion technique studied in this paper, is founded on the digital duty-cycle modulation principle. It consists of a simple digital duty-cycle modulation program loaded in the flash memory of a microcontroller and an external analog low pass filter. Both pulse width and modulation period, simultaneously evolve according to the variation of the modulating input. Th...

Modern AC drives require a fast digital realization of many mathematical operations concerning control and estimator’s algorithms, which are time consuming. Therefore developing of custom built digital interfaces as well as digital data processing blocks and sometimes even integration of ADC converters into single integrated circuit is necessary. Due to the fact that developing an ASIC chip is ...

|We have built a fast signal-processing and readout ASIC (PPrAsic) for the Pre-Processor system of the ATLAS Level-1 Calorimeter Trigger. Our novel ASIC design environment incorporates algorithm development with digital hardware synthesis and veri cation. The purely digital ASIC was designed in Verilog HDL (hardware description language) and embedded in a system wide analog and digital simulati...

The paper summarizes the authors' experience of the working with Motorola and Texas Instruments digital signal processors, and introduces the fundamentals of effective generation of algorithms. The basic algorithm of digital filters and FFT are analysed with respect to the optimal implementation on digital signal processors of the DSP56824 and DSP56307 families by Motorola and 5000 family by TI...

the article introduces cyclic dilation groups and finite affine groups for prime integers, and  as an application of this theory it presents a unified group theoretical approach for the  cyclic wavelet transform (cwt) of prime dimensional periodic signals.

Title of Dissertation: ULTRA-FAST OPTICAL SIGNAL PROCESSING FOR DIGITAL COMMUNICATIONS USING ALL-OPTICAL NONLINEAR INTERACTIONS IN SEMICONDUCTOR OPTICAL WAVEGUIDES Ehab S. Awad, Doctor of Philosophy, 2003 Dissertation directed by: Professor Julius Goldhar Department of Electrical and Computer Engineering In optical communications, clock recovery, optical time demultiplexing, and 3R regeneration...

FFT/IFFT has been one of the most important algorithms in digital signal processing. In the recent years, the FFT/IFFT has frequently been applied in the modern communication systems due to its efficiency for OFDM (Orthogonal Frequency Division Multiplex) implementation. Many applications, like xDSL modems, HDTV, mobile radio terminals, use FFT/IFFT processor as a key component. The butterfly e...

Abstract: The digital signal processing revolution began around 1980 as the first dedicated digital signal processors began to appear. Since that time DSP has been incorporated into just about every aspect of modern electronics. Oscilloscopes are no exception. Digital storage oscilloscopes have almost totally replaced analog oscilloscopes. They use DSP in acquisition modes, averaging, interpola...

FFT (fast Fourier transform) plays a very important role in many fields, such as digital signal processing, digital image processing and so on. However, in application, FFT becomes a factor of affecting the processing efficiency, especially in remote sensing, which large amounts of data need to be processed with FFT. So shortening the FFT computation time is particularly important. GPU (Graphic...