We designed a VLSI chip of FFT multiplier based on simple Cooly Tukey FFT using a floating-point representation with optimal data length based on an experimental error analysis. The VLSI implementation using HITACHI CMOS 0.18μm technology can perform multiplication of 2 to 2 digit hexadecimal numbers 19.7 to 34.3 times (25.7 times in average) faster than software FFT multiplier at an area cost ...

This paper introduces a kind of FFT algorithm design and realization based on the Xilinx IP core . On the analysis of FFT algorithm, Rely on Xilinx Spartan -3A DSP FPGA series as platform, by calling FFT IP core, validating the feasibility and reliability in FFT algorithm medium or lower end FPGA. Keywords-FFT algorithm module, Xilinx IP core, Spartan 3A DSP, Fixed-point compression

‎There are different feature extraction methods in brain-computer interfaces (BCI) based on Steady-State Visually Evoked Potentials (SSVEP) systems‎. ‎This paper presents a comparison of five methods for stimulation frequency detection in SSVEP-based BCI systems‎. ‎The techniques are based on Power Spectrum Density Analysis (PSDA)‎, ‎Fast Fourier Transform (FFT)‎, ‎Hilbert‎- ‎Huang Transform (H...

This paper describes in detail the design of a CMOS custom fast Fourier transform (FFT) processor for computing a 256-point complex FFT. The FFT is well-suited for realtime spectrum analysis in instrumentation and measurement applications. The FFT butterfly processor reported here consists of one parallel–parallel multiplier and two adders. It is capable of computing one butterfly computation e...

Pipeline FFT processors are used in mobile communication systems and in particular in OFDM-based systems. This paper presents a method for power analysis and clock optimization of pipeline FFT processors for particular OFDM baseband system. This method is applied to various architectures with different radices. The analysis can be used in the design of high speed pipeline FFT processors.

Purpose: Heart rate variability (HRV) is acknowledged as a useful tool to estimate autonomic function. Fast Fourier transform (FFT) and autoregressive model (AR) are used for power spectral analysis of HRV. However, there is little evidence of agreement between FFT and AR in relation to HRV following food intake in females. In the present study, we applied both FFT and AR after food intake duri...

This paper describes in detail the design of a custom CMOS Fast Fourier Transform(FFT) processor for computing 256-point complex FFT. The FFT is well suited for real-time spectrum analysis in instrumentation and measurement applications. The FFT butterfly processor consists of one parallel-parallel multiplier and two adders. It is capable of computing one butterfly computation every 100ns thus ...