An efficient transform decomposition method for sparse input points DFT in multiple-carriers cognitive radio system

Abstract

Fast Fourier transform (FFT) is widely used in signal processing and communications such as digital filtering, spectral analysis, and multicarrier cognitive radio systems based on OFDM (orthogonal frequency-division multiplexing) and FBMC (filter-bank multi-carriers). There are several methods that have been developed to eliminate or reduce the computation… (More)

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