Digital radio transmission system

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network

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370 50, 455 33, H01Q 704

Patent

active

047992522

ABSTRACT:
A cellular digital radio transmission system which increases the number of available communication channels between base stations and mobile stations in such system. Message transmission from a base station to its assigned mobile stations is effected by a combination of time-division, code-division and frequency-division multiplexing. Message transmission from the mobile stations assigned to a particular base station is effected by at least one of such multiplexing modes.

REFERENCES:
patent: 4052563 (1977-10-01), Nodd
patent: 4171464 (1979-10-01), Evenchik
patent: 4215244 (1980-07-01), Gutleber
patent: 4237551 (1980-12-01), Narashima
patent: 4301530 (1981-11-01), Gutleber
patent: 4514853 (1985-04-01), Gutleber
patent: 4688210 (1987-04-01), Eizenhoffer et al.
patent: 4697260 (1987-09-01), Grauel et al.

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