Title :
What use is delta modulation to the transmission engineer?
Author_Institution :
Bell Telephone Laboratories, Inc., Murray Hill, N. J.
fDate :
5/1/1957 12:00:00 AM
Abstract :
MOST of the transmission methods used today are rather elementary. The signal to be transmitted is made to vary the amplitude or phase of a sine wave, or perhaps the height, width, or position of a pulse. The variation is continuous, and at each repeater some noise, cross-talk or distortion is added to the signal, causing some deterioration in quality. By the time the signal has gone through hundreds of repeaters, it is a miracle that there is any quality left.
Keywords :
Decoding; Delta modulation; Encoding; Frequency modulation; Noise; Phase change materials; Repeaters;
Journal_Title :
American Institute of Electrical Engineers, Part I: Communication and Electronics, Transactions of the
DOI :
10.1109/TCE.1957.6372644
