Chirp based multiple access technique using Fractional Fourier Transform

Abstract

In this paper we consider the use of chirp signals as signatures to identify user in multi-user communication system. We propose the use of Fractional Fourier Transform for extracting the desired signature chirp signal. We describe the complete multiple access system using this method. We show that the proposed system can support more number of users for the given bandwidth as compared to existing multiple access systems like TDMA/FDMA (GSM) and CDMA.