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The Influence of Fast Fourier Transform on the Signal-Spectrum Estimation

The Influence of Fast Fourier Transform on the Signal-Spectrum Estimation,10.1023/A:1015932011243,Radiophysics and Quantum Electronics,S. Yu. Medvedev

The Influence of Fast Fourier Transform on the Signal-Spectrum Estimation  
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We analyze the accuracy of digital estimation of the signal spectrum. Quantization noise introduced by the analog-to-digital converter (ADC) and fast Fourier transform (FFT) is allowed for. The basic analysis is carried out using the example of a test harmonic signal. The characteristic of the signal-to-noise ratio, called the effective binary word size of a harmonic signal is introduced. Optimal combinations between the ADC word size and the FFT type used are discussed.
Journal: Radiophysics and Quantum Electronics - RADIOPHYS QUANTUM ELECTRON , vol. 45, no. 3, pp. 239-245, 2002
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