Title :
Trellis-coded continuous-phase modulation for satellite-based mobile communications
Author :
Abrishamkar, Farrokh ; Biglieri, Ezio
Author_Institution :
Technol. Group, Los Angeles, CA, USA
fDate :
28 Nov-1 Dec 1988
Abstract :
The authors consider a satellite-based mobile communication scheme based on continuous-phase modulated (CPM) signals used in conjunction with trellis-coded modulation (TCM). This scheme provides a power saving due to the coding gain of TCM, and simultaneously a reduced bandwidth occupancy due to the particular structure of CPM signals. Moreover, CPM provides constant-envelope signals, which is a requirement for satellite transponders operating in a time-division multiple-access mode. To keep the complexity manageable, a detection scheme based on differential detection of CPM is used. They describe the system and its performance, and then they investigate how to estimate the frequency shift induced in the received signal by the Doppler effect
Keywords :
Doppler effect; encoding; error detection codes; mobile communication systems; phase modulation; satellite relay systems; CPM signals; Doppler effect; coding gain; constant-envelope signals; continuous phase modulation; differential detection; frequency shift; received signal; satellite transponders; satellite-based mobile communications; time-division multiple-access; trellis-coded modulation; Bandwidth; Communications technology; Convolutional codes; Demodulation; Mobile communication; Modulation coding; Power system reliability; Satellites; Speech analysis; Transponders;
Conference_Titel :
Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE
Conference_Location :
Hollywood, FL
DOI :
10.1109/GLOCOM.1988.26015
