Optimum utilization of domestic communication satellites for data and television transmission

Domestic satellites are increasingly being used for business communications which include those of distributed computer networks, automated offices, and automated houses. These functions will require an optimization of the use of satellite transponders for a large number of users transmitting in either SCPC or TDMA modes, representing a mostly low bit data rate for present and prospective modems. Attention is presently given to the potential users who will seek satellite paths for video or digital data, together with such related topics as satellite and earth terminal design practices and the utilization of the geostationary arc. Baseband apportionment of transponder bandwidths, modulation techniques, and multiple access techniques will be used to offer an optimum utilization of the radio spectrum.