Performance of some Rake modems over the non-disturbed wide band HF channel

Author

Bello, Phillip A.

Author_Institution

Mitre Corp., Bedford, MA, USA

fYear

1988

fDate

23-26 Oct 1988

Firstpage

89

Abstract

The author presents performance evaluations for four Rake modems used to communicate over the wideband (e.g. 1 MHz) HF channel. Attention is confined to performance for the nondisturbed HF channel. Consideration is given to the impact of mode Doppler shift and multipath spread due to dispersion. The effects of additive noise, self-noise, and imperfect channel measurements are included. Results are presented for decision-directed, parallel probe, serial probe, and DPSK Rake modems. Performance to within 1-3 dB of the additive white Gaussian noise channel is predicted, depending upon the modem and the channel dispersion, if the Doppler shift of the modem can be tracked to within 0.1 Hz

Keywords

Doppler effect; fading; modems; telecommunication channels; white noise; Rake modems; additive noise; additive white Gaussian noise channel; channel dispersion; imperfect channel measurements; mode Doppler shift; multipath spread; nondisturbed HF channel; self-noise; wideband; Additive noise; Doppler shift; Hafnium; Interference; Modems; Narrowband; Noise measurement; Probes; Spread spectrum communication; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference, 1988. MILCOM 88, Conference record. 21st Century Military Communications - What's Possible? 1988 IEEE

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/MILCOM.1988.13374

Filename

13374