Author_Institution :
International Telephone and Telegraph Corp., New York, N.Y.
fDate :
6/1/1949 12:00:00 AM
Abstract :
The broad significance of pulse modulation is dealt with from its original concept through the various methods of attaining it. Its application to time-division multichannel systems is considered. More recent developments in pulse-count-modulation systems, and also potential applications to switching problems, are described.
Keywords :
Bandwidth; Frequency conversion; Helium; Information filtering; Information filters; Pulse modulation; Speech; Telegraphy; Telephony; Transmitters;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1949.233950
