A satellite communications system, which is inherently power limited, employing spread spectrum techniques in order to trade-off bandwidth for small ground station antennas. In a one-way system embodiment a central station transmits data to a satellite for relay to a large number of small antenna receiving...http://www.google.fr/patents/US4455651?utm_source=gb-gplus-shareBrevet US4455651 - Satellite communications system and apparatus
