Title :
Data Transmission Tests on Tropospheric Beyond-the-Horizon Radio System
Author :
Willson, F.E. ; Runge, W.A.
Author_Institution :
Military Communication Systems Engineering Dept., Bell Telephone Labs., Inc., Whippany, NJ, USA
fDate :
3/1/1960 12:00:00 AM
Abstract :
This paper presents the results of data transmission tests made on both single-link and multi-link tropospheric beyondthe-horizon radio systems. Tests were made at 750 or 1300 bits per second employing both double sideband AM and FM methods of data modulation. In the single-link tests the data performance was determined for various transmission parameters such as median channel noise, peak channel noise, radio received carrier level, and order of diversity. Data were satisfactorily transmitted on a 2400mile circuit consisting of nine different beyond-the-horizon paths and six line-of-sight paths. The FM-type data modulation was notably superior to the AM type.
Keywords :
Circuit noise; Circuit testing; Computer vision; Data communication; Frequency modulation; Noise level; System testing; Systems engineering and theory; Telephony; Teleprinting;
Journal_Title :
Communications Systems, IRE Transactions on
DOI :
10.1109/TCOM.1960.1097602
