Title :
Effect of modulation index on design of asymmetric coded FPM
Author :
Zhang, Q. ; Dubey, V.K. ; Gunawan, E.
Author_Institution :
Sch. of EEE, Nanyang Technol. Univ., Singapore
fDate :
4/29/1999 12:00:00 AM
Abstract :
The design of asymmetric coded frequency/phase modulation (FPM) is discussed. Designs for optimum asymmetric 2FSK/4PSK, 2FSK/8PSK and 2FSK/16PSK modulation schemes are derived and the effect of modulation index is studied. It is shown that an additional gain of 1.2-2.6 dB can be achieved by using optimised asymmetric modulation over that of a symmetric scheme
Keywords :
frequency shift keying; phase shift keying; trellis coded modulation; 2FSK/16PSK; 2FSK/4PSK; 2FSK/8PSK; TCM; asymmetric coded FPM design; frequency/phase modulation; modulation index effect; modulation schemes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990485
