Title :
Spectra of combined digital amplitude and frequency modulation
Author :
Chan, Calvin K. ; Tjhung, T.T.
Author_Institution :
University of Singapore, Department of Electrical Engineering, Singapore
Abstract :
Spectra of digital signals transmitted by combined amplitude and frequency modulation are derived. Cumulative spectral-distribution curves are presented for certain values of f.m. deviation and a.m. index, and the results are compared with biternary f.m. transmission.
Keywords :
amplitude modulation; digital signals; frequency modulation; digital signals; frequency modulation; spectral distribution;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19720240
