Title :
Effects of channel compression on SAW based quadrature binary modulation systems
Author :
Tang, P.W. ; Belkerdid, M.A. ; Malocha, Donald C.
Author_Institution :
Dept. of Electr. and Comput. Eng., Central Florida Univ., Orlando, FL
fDate :
31 Oct-3 Nov 1993
Abstract :
Optimum pulse shapes used in quadrature binary modulation (QBM) systems to achieve spectral confinement and low sidelobe levels have been successfully implemented using SAW FIR filters. Performance criteria such as spectral confinement, sidelobe level, and envelope uniformity have been theoretically predicted and experimentally verified in an additive white Gaussian noise (AWGN) channel environment for SAW based quadrature binary modulators such as QPSK, and MSK. This paper presents the effects of channel compression on spectral efficiency, sidelobe level, envelope uniformity and probability of error for four SAW based quadrature binary modulators that use cosine series for optimum pulse shapes. Theoretical as well as experimental results for the four SAW based modulators are presented
Keywords :
data compression; digital communication systems; digital filters; minimum shift keying; phase shift keying; random noise; surface acoustic wave filters; telecommunication channels; white noise; AWGN; MSK; QPSK; SAW FIR filters; SAW based quadrature binary modulation systems; additive white Gaussian noise; channel compression; cosine series; envelope uniformity; low sidelobe levels; optimum pulse shape; sidelobe level; spectral confinement; AWGN; Additive white noise; Power amplifiers; Pulse modulation; Pulse shaping methods; RF signals; Radiofrequency amplifiers; Shape; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Ultrasonics Symposium, 1993. Proceedings., IEEE 1993
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2012-3
DOI :
10.1109/ULTSYM.1993.339701
