Title :
Low data rate on-board demultiplexing and demodulation for business services communication satellites
Author :
Ananasso, Fulvio
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
Abstract :
Certain design and implementation problems related to space-borne multicarrier (or group) demodulation (MCD) of a large number of low-to-moderate data rate signals (137 kb/s to 4.369 Mb/s), relevant to business services exchanged via (regenerative) FDMA (uplink)/TDM (downlink) communication satellites, are discussed. Emphasis is given to MCDs utilizing chirp Fourier transform (CFT) processors, displaying an interesting mix of analog and digital signal processing. Mass/DC power budgets for some representative data rates are indicated, and a comparison is made with some alternative MCD technologies
Keywords :
demodulation; digital communication systems; frequency division multiple access; satellite relay systems; signal processing; time division multiplexing; 137 kbit/s to 4.369 Mbit/s; CFT processors; FDMA; TDM; analog signal processing; business services communication satellites; chirp Fourier transform; downlink; low data rate; multicarrier demodulation; onboard demultiplexing; uplink; Artificial satellites; Business communication; Chirp; Demodulation; Demultiplexing; Downlink; Fourier transforms; Frequency division multiaccess; Signal design; Time division multiplexing;
Conference_Titel :
Communications, 1989. ICC '89, BOSTONICC/89. Conference record. 'World Prosperity Through Communications', IEEE International Conference on
Conference_Location :
Boston, MA
DOI :
10.1109/ICC.1989.49844
