Adaptive HF for voice and data

Author

Schilling, D.L. ; Apelewicz, T. ; Lomp, G. ; Pavelchek, A.

Author_Institution

Dept. of Electr. Eng., City Coll., City Univ. of New York, NY, USA

fYear

1989

fDate

15-18 Oct 1989

Abstract

Summary form only given. The authors describe an adaptive HF system for voice and video. The system uses information obtained from a link quality analysis and/or ionospheric soundings to determine the appropriate link and frequency over which to communicate. In addition, the system can be frequency hopped, thereby reducing the probability of being jammed. The improved performance obtained using frequency-agile modulation techniques was measured, and it is shown that the FH (frequency hopping) modem described is capable of achieving low error rates at low signal-to-noise ratio and with narrow bandwidth

Keywords

data communication systems; frequency agility; radiocommunication; visual communication; voice communication; adaptive HF system; frequency hopping modem; frequency-agile modulation techniques; ionospheric soundings; link quality analysis; low error rates; low signal-to-noise ratio; narrow bandwidth; voice/data; voice/video; Adaptive systems; Error analysis; Frequency measurement; Frequency modulation; Hafnium; Information analysis; Jamming; Modems; Signal to noise ratio; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1989. MILCOM '89. Conference Record. Bridging the Gap. Interoperability, Survivability, Security., 1989 IEEE

Conference_Location

Boston, MA

Type

conf

DOI

10.1109/MILCOM.1989.104041

Filename

104041