Accession Number : ADD003200
Title : System for Reducing Radio Communication Frequency Bandwidth and Increasing Number of Channels Available.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Kermode,David W
Report Date : 08 Jun 1976
Pagination or Media Count : 7
Abstract : The patent relates to a modulated communication system having radio frequency bandwidth reduction in which level sensing circuits at the transmitter control the modulations such that information signals up to a predetermined and selected percent of the modulation level commonly used are transmitted as before, and information signals above that percentage are reduced so that they also begin at the zero amplitude level. That is, once the preselected threshold percentage is reached the signal level is reduced by that threshold amount so that, although all the information in the signal is retained, the signal level is prevented from being greater than the predetermined and selected threshold percentage.
Descriptors : *Signal processing, *Patents, Communication and radio systems, Bandwidth, Reduction, Radiofrequency
Subject Categories : Radio Communications
Distribution Statement : APPROVED FOR PUBLIC RELEASE