Title :
Image transmission through ionospheric channel
Author :
Erhel, Y.M. ; Perrine, C. ; Lemur, D. ; Bourdillon, A.
Author_Institution :
Centre de Recherches des Ecoles de Coetquidan-St.-Cyr, Guer, France
Abstract :
An operational system for image transmission through the ionospheric channel is presented. For a range of 780 km, the ´high´ data transfer rate attains 30 kbits/s in a 9 kHz bandwidth with the implementation of a blind spatio-temporal equalisation based on the constant modulus algorithm. This value significantly exceeds the current standard for HF modems (4.8 kbits/s). The quality of the transmitted images appears to be good compared with the original.
Keywords :
active antenna arrays; blind equalisers; loop antennas; radio links; spatiotemporal phenomena; telecommunication channels; visual communication; 30 kbit/s; 780 km; 9 kHz; active antenna arrays; blind spatiotemporal equalisation; constant modulus algorithm; high data transfer rate; image transmission; ionospheric channel; loop antennas; operational system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20056882
