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We present an automated placement algorithm for a high-bandwidth, streaming fast Fourier transform (FFT) generated using an open-source core generator. For radio spectral line analysis, we generate a 2048-point FFT for a standard commercial FPGA high-bandwidth spectrometer, which can process 16 digital samples per cycle simultaneously (streaming). Our placement algorithm enables this system to operate...
New telecommunication systems are based more than ever before on digital signal processing. High speed digital telecommunication systems such as OFDM and DSL need real-time high-speed computation of the Fast Fourier Transform. Thus there is a need of innovative algorithms to improve the speed. In this paper, we propose vedic algorithm for the implementation of multipliers to be used in the FFT. Vedic...
When DVB-T (Digital Video Broadcasting - Terrestrial) was introduced in the 1990s, it was impossible to foresee the upcoming demand for HDTV devices. Thus, a revision of this broadcasting standard, namely DVB-T2, was necessary. Recently finalized, this standard is targeting to high-definition television (HDTV). To pave the way to commercialization, an appropriate implementation concept and its corresponding...
This paper relates to the research on a dexterous hand prosthesis conducted at the Wroclaw University of Technology. The possibility of aiding the prosthesis control system by utilization of application specific digital circuits is presented. Several exemplary designs, prepared during some of to-date works conducted by authors, have been presented. Discussed solutions are part of a bigger project...
DVB-T2, the revision of DVB-T (Terrestrial Digital Video Broadcasting), was recently finalized, targeting to high definition television (HDTV). To pave the way to commercialization, an appropriate implementation concept and its corresponding validation are of utmost importance. Without a doubt, the most challenging requirements introduced by the DVB-T2 specification are an FFT (Fast Fourier Transform)...
This paper described a versatile block of signal conditioning options that process raw data samples from the A/D converter and deliver a filtered and resampled version of those data samples to a conventional FFT based spectrum analyzer. The conditioning performs a number of important processing functions. These include spectral translation to baseband, noise bandwidth reduction to signal bandwidth,...
The computation amount of SAR radar image is huge. To reach real-time speed, we need high-function device. The computation task of SAR concentrates on range and azimuth compressions. Usual measure of compression is using high speed DSP, but FPGA technique is improving so fast that it has become a better way to realize compression than DSP. DSP often needs external interface and control chips to work...
The fast Fourier transform (FFT)is a computationally intensive digital signal processing(DSP)function widely used in applications such as imaging ,software-defined radio, wireless communication, instrumentation and machine inspection. Historically, this has been a relatively difficult function to implement optimally in hardware leading many software designers to use digital signal processors in soft...
Using fast Fourier transform (FFT) is indispensable in most signal processing applications. Designing an appropriate algorithm for the implementation of FFT can be efficacious in digital signal processing. Sophisticated techniques such as pipelining and parallel calculations have potential impacts on VLSI implementation of FFT algorithm. Furthermore, a mathematic approach such as floating point calculation...
Discrete Fourier transform is recognized as one of the basic digital signal processing operations. One of the most efficient methods of performing this transformation is fast Fourier transform (FFT). It has been showed that no algorithm for computing the DFT could have a smaller complexity than the FFT. Thus most FPGA implementations are based on this approach. With the introduction of specialized...
A configurable floating-point coprocessor by a FPGA is designed to enhance the computational capability of the digital platform based on the fixed-point DSP, with which the platform will be competent to implement intensively computational tasks. Detailed design procedures of the coprocessor are presented. A new division algorithm is proposed by combining the lookup-table algorithm and multiplicative...
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