Title :
A voice/data modem for mobile satellite communications
Author :
Bateman, A. ; McGeehan, J.P.
Author_Institution :
Bristol Univ., UK
Abstract :
The authors describe the design and performance of a novel voice and data modem developed for mobile satellite communications, offering high speech quality and good intelligibility even for marginal link budgets, together with a coherent data transmission capability resilient to multipath fading and Doppler shift. The modem is implemented using the latest digital signal processing techniques and generates the necessary I/Q signal formats for interfacing to a direct conversion 70MHz transceiver unit
Keywords :
Doppler effect; fading; mobile communication systems; modems; satellite relay systems; transceivers; 70 MHz; Doppler shift; I/Q signal formats; coherent data transmission; digital signal processing techniques; intelligibility; mobile satellite communications; multipath fading; speech quality; transceiver unit; voice/data modem;
Conference_Titel :
Satellite Systems for Mobile Communications and Navigation, 1988., Fourth International Conference on
Conference_Location :
London
Print_ISBN :
0-85296-367-X
