DESIGN AND SIMULATION OF THE DIGITAL UP CONVERTER (DUC) FOR GSM SYSTEM USING MATLAB AND SYSTEM GENERATOR

Abstract

This paper presents the design and simulation of the Digital Up Converter (DUC) in system generator. DUC is a digital circuit which generating digital Intermediate Frequency (IF) signal from low complex digital baseband signal. The DUC provides pulse shaping, interpolation and frequency translation where the up-sampled signal is shifted from centered frequency (2.166 MHz) to intermediate frequency. Due to Wideband Global System Mobile (GSM) specifications, the DUC is to pulse shaped and up sampled the baseband signal by a factor of 16. The DUC up sampled the signal up to 69.333MHz.