Chirp multiplexing and filtering in the offset linear canonical transform domain

Abstract

This paper shows how offset linear canonical transform (OLCT) can be handled for multiplexing chirp signals in time–frequency domain in the presence of additive white Gaussian noise (AWGN). A set of original test signals have been processed in this framework for OLCT and offset fractional Fourier transform (OFRFT) modalities. After recovering, the resulting signals obtained from these two modalities have been evaluated by measuring the mean square error (MSE) to input signals for different signal to noise ratio (SNR) values and found MSE is minimum in case of LCT multiplexing and filtering domain as compared to the corresponding fractional domain.