ESTGV - DMAT - Documentos de congressos (comunicações, posters, actas)

Permanent URI for this collection

Now showing 1 - 1 of 1

High Resolution Spectral Estimation using BP via Compressive Sensing
Publication . Duarte, Isabel; Vieira, José M. N.; Ferreira, Paulo J S G; Albuquerque, Daniel
In this paper we propose a method based on compressed sensing (CS) for estimating the spectrum of a signal written as a linear combination of a small number of sinusoids. In the case of finite-length signals, the Fourier coefficients are not exactly sparse due to the leakage effect if the frequency is not a multiple of the fundamental frequency; To overcome this problem our algorithm transform the DFT basis into a frame with a larger number of vectors, by inserting columns between some of the initial ones. The algorithm applies Basis Pursuit (BP) to estimate the sinusoids amplitude, phase and frequency.
2012-10Journal article Restricted access Show more