Title :
An adaptive half duplex data transmission FEC/ARQ procedure: results on real HF ionospheric channel
Author :
Merel, D. ; Pirez, D.
Author_Institution :
Div. of RGS, Thomson-CSF, France
Abstract :
An automatic data rate adaptation is described for HF modems in degraded ionospheric propagation conditions by associating rate compatible punctured codes with a dedicated automatic repeat request procedure. Real transmission of data files with a 3 kHz high rate modem is up to 2.6 kb/s automatically accorded with the channel capacity. TCM codes may extend throughput up to 3.8 kb/s with the same ARQ procedure
Keywords :
Reed-Solomon codes; adaptive systems; channel capacity; convolutional codes; data communication systems; error correction codes; modulation; phase shift keying; protocols; radio links; trellis codes; 2.6 kbit/s; 3 kHz; 3.8 kbit/s; ARQ procedure; HF modems; TCM codes; adaptive half duplex data transmission FEC/ARQ procedure; automatic data rate adaptation; automatic repeat request procedure; channel capacity; data files; degraded ionospheric propagation conditions; rate compatible punctured codes; real HF ionospheric channel; throughput; trellis coded modulation;
Conference_Titel :
HF Radio Systems and Techniques, 1994., Sixth International Conference on
Conference_Location :
York
Print_ISBN :
0-85296-616-4
DOI :
10.1049/cp:19940492
