High rate data transmission in the mid-latitude NVIS HF channel

Author

Antoniou, S. ; Christofi, L ; Green, P.R. ; Gott, G.F.

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Manchester, UK

Volume

153

Issue

2

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

272

Lastpage

278

Abstract

The paper investigates the use of differential modulation techniques to achieve high rate data transmission by near vertical incidence sky wave high frequency propagation, using a 2.7 kHz voice channel bandwidth. Channel characteristics have been measured for a range of frequencies between 2.8 and 9.4 MHz, using a transmitter power of 100 W over a distance of 160 km. These measurements are used to characterise simulated channel conditions, and the simulator is then used to determine the performances of differential modulation methods. In particular, time-differential amplitude and phase shift keying and frequency-differential amplitude and phase shift keying modulation methods are investigated. Symbol error rates are presented for data rates ranging from 4.3 to 20.6 kbit/s, where the system performances are limited by time-varying channel dispersion rather than by additive noise.

Keywords

HF radio propagation; data communication; dispersive channels; error statistics; phase shift keying; radio links; time-varying channels; 100 W; 100 km; 2.7 kHz; 2.8 to 9.4 MHz; 4.3 to 20.6 kbit/s; channel characteristics; differential modulation technique; frequency-differential amplitude; high frequency propagation; high rate data transmission; mid-latitude NVIS HF channel; near vertical incidence sky wave; phase shift keying; symbol error rate; time-varying channel dispersion; transmitter power; voice channel bandwidth;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:20050124

Filename

1610502