Variable modulation communication method and system

Details Variable modulation communication method and system Variable modulation communication method and system

1992-10-27

1996-11-19

Tse, Young T.

Pulse or digital communications

Miscellaneous

375222, 375259, 4552262, H04J 300

Patent

active

055770878

ABSTRACT:
In a variable modulation communication method, the transmission quality of a transmission path is monitored. If the transmission quality is good, communication is performed while the transmission time is shortened by using a multilevel modulation scheme. If the transmission quality is bad, communication is performed while the transmission time is prolonged by using a modulation scheme having a smaller number of levels than the multilevel modulation scheme. A variable modulation communication apparatus is also disclosed.

REFERENCES:
patent: 3911395 (1975-10-01), Koike
patent: 4571735 (1986-02-01), Furse
patent: 4697265 (1987-09-01), Nozve
patent: 5081666 (1992-01-01), Blaschek et al.
Gardner, C. R., "A Hybrid Simulation Incorporating; Multiple Modulation Techniques," Proceedings of the 1985 Summer Computer Simulation Conf. Jul. 22-24, 1985 pp. 284-289.
"Procedure for G3 Document Facsimile Transmission in the General Switched Telephone Network Incorporating Error Correction", CCITT IXth Plenary Assembly, Melbourne, Nov. 1988, vol. VII, Fascicle VII. 3, pp. 119-131.

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