Accession Number : AD0697579

Title :   REQUIRED SIGNAL-TO-NOISE RATIOS FOR HF COMMUNICATION SYSTEMS.

Descriptive Note : Technical rept.,

Corporate Author : INSTITUTE FOR TELECOMMUNICATION SCIENCES BOULDER COLO

Personal Author(s) : Akima,Hiroshi ; Ax,Gene G. ; Beery,Wesley M.

Report Date : AUG 1969

Pagination or Media Count : 66

Abstract : Values of required signal-to-noise ratios are estimated for the following HF communication systems: amplitude-modulation (AM) voice communication systems, noncoherent frequency-shift-keying (NCFSK) radioteletypewriter systems, composite voice and teletypewriter systems, aural-reception radiotelegraphy, and phototelegraphy (facsimile). Except for NCFSK systems, for which certain aspects of the basic performance had to be evaluated in the course of this study, values of required signal-to-noise ratios are estimated from published data in the open literature. (Author)

Descriptors :   (*COMMUNICATION AND RADIO SYSTEMS, SIGNAL-TO-NOISE RATIO), HIGH FREQUENCY, AMPLITUDE MODULATION, VOICE COMMUNICATIONS, FREQUENCY SHIFT KEYERS, TELETYPE SYSTEMS, FACSIMILE TRANSMISSION, DIVERSITY RECEPTION

Subject Categories : Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE