Filtrado de kallman para la recuperacion de portadora a partir de estimaciones previas

Abstract

Two approaches to carrier recovery in a digital communications system under non-stationary conditions are presented for low and high signaling rates with respect to the maximum allowable Doppler frequency. A Kalman-based scheme is proposed for small frequency deviations, while for Doppler uncertainties, equal to the signaling rate or higher, an adaptive scheme based on a zero error detector is shown to perform satisfactorily.