Title :
Single-tone HF data transmission with 2.4 kbps and 4.8 kbps
Author :
Brakemeier, A. ; Lindner, J.
Abstract :
In the past few years powerful single-tone modems for data transmission via HF radio links became realizable. These single-tone modems overcome many of the shortcomings of conventional parallel tone-type modems, but it is very important to apply proper designed signal processing algorithms and coding schemes to cope with the disturbing effects on HF radio channels, i.e. with time-varying multipath propagation and strong additive interference. A modem for 2.4 kbps using 4 PSK, adaptive decision feedback equalization (DFE) and Reed-Solomon (RS) coding is dealt with. Some features of 4.8 kbps algorithms using 16 PSK trellis coding and Viterbi algorithm (VA) equalization/decoding are also described.<>
Keywords :
modems; phase shift keying; radio equipment; 16 PSK trellis coding; 2.4 kbit/s; 4.8 kbit/s; HF radio channels; HF radio links; PSK; Reed-Solomon coding; Viterbi algorithm; adaptive decision feedback equalization; additive interference; coding; signal processing algorithms; single tone HF data transmission; single-tone modems; time-varying multipath propagation; Modems; Phase shift keying; Radio communication equipment;
Conference_Titel :
HF Radio Systems and Techniques, 1988., Fourth International Conference on
Print_ISBN :
0-85296-358-0
