SPADE is the first practical DAMA satellite communications system on single voice channel per carrier scheme. In order to realize this system, many new devices have been developed. This paper describes a few examples of such new devices, a PCM CODEC, PSK MODEM and Frequency Synthesizer, used in a channel unit of the voice transmission subsystem, after a brief explanation about the system and terminal equipment. Design and performance of these devices are described.
Transmission subsystem for SPADE terminal
Uebertragungshilfssystem fuer die Spade-Datenendstelle
NEC Research and Development ; 31 ; 10-23
1973
14 Seiten, 23 Bilder, 2 Tabellen, 8 Quellen
Article (Journal)
English