Title :
Comparative study of the performance of wavelets as shaping pulses for modulation over linear and non-linear channels
Author :
Daneshgaran, Fred ; Mondin, Marina ; Dovis, Fabio
Author_Institution :
ECE Department, California State Univ., Los Angeles, 5151 State University Drive, Los Angeles, CA 90032, USA
Abstract :
The use of orthonormal scaling functions, wavelets and wavelet packets for pulse shaping has been recently proposed in [1]–[9]. Because of their excellent spectral characteristics, such waveforms can be used for Wavelet Orthogonal Frequency Division Multiplexing (WOFDM) [2] and spectral shaping [10], [11]. In this paper we study the performance of the Meyer, Daubechies, biorthogonal Spline, Battle-Lemarie´ and modified Gaussian [12] families of wavelets for modulation over linear and non-linear channels, and we propose the use of wavelets for pulse shaping over FDM non-linear satellite channels and for multicarrier modulation on satellite and multipath channels. Simulation results indicate that in certain cases wavelet based shaping pulses could out-perform traditional techniques in extremely critical transmission conditions, such as interchannel interference impaired satellite transmission or transmission on multipath channels.
Keywords :
Bandwidth; Finite impulse response filters; Modulation; Satellites; Signal to noise ratio; Timing; Wavelet packets; Multichannel modulation; satellite communications; wavelets;
Journal_Title :
Communications and Networks, Journal of
DOI :
10.1109/JCN.2000.6596710