Title :
HF data message and facsimile terminal system
Author_Institution :
Commun. Res. Centre, Ottawa, Ont., Canada
Abstract :
The data terminal (HF-Maxi terminal) is an outcome of the research and development done by CRC. The first generation of the HF message terminal developed by CRC (HF-Mini terminal) used a simple selective ARQ protocol for data transmission reference. Alternate techniques were investigated to improve the ARQ protocol for the second generation of a HF packet radio system by utilizing the soft decision information received in a block with errors in subsequent receptions to improve throughput of the system. The HF-Maxi terminal system was designed built and extensively tested over sky wave paths to prove the viability of transmitting large data files at high speeds through HF radio channels. The system has facilities to input text, data and facsimile images for transmission
Keywords :
data communication equipment; data communication systems; error correction codes; facsimile; facsimile equipment; packet switching; radio systems; CRC; HF data message; HF packet radio system; HF-Maxi terminal; data; data terminal; error blocks; facsimile terminal system; sky wave paths; soft decision information; text;
Conference_Titel :
HF Radio Systems and Techniques, 1988., Fourth International Conference on
Conference_Location :
London
Print_ISBN :
0-85296-358-0