Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1988-03-07
1989-01-17
Lev, Robert
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
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.
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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.
Eizenhoffer Alfons
Preller Hans-Gorg
Briody Thomas A.
Eason Leroy
Lev Robert
U.S. Philips Corp.
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