COMMUNICATION SYSTEM Russian patent published in 1997 - IPC

Abstract RU 2099881 C1

FIELD: system for communication with radio stations and remote devices, for example, in a cellular mobile radio communication system radio stations transmit radio signals and receive radio signals each of them containing a communication signal. SUBSTANCE: the maximum probable number of processing functions is displaced from immobile stations to remote equipment. The radio signal transmitted by radio station 2 is produced by the fact that remote transmitter 10 generates an unmodulated carrier and a carrier modulated by the communication signal; these carries differ in frequency by the value of the radio signal carrier frequency ((f1).). These both optical carriers are transmitted to radio station 2, there they are mixed in an optical receiver producing a radio signal containing a communication signal. The radio signal received by radio station 40 is transmitted in an optical way to remote device 44, and only there it is subjected to further processing. This transmission occurs due to the fact that optical transmitter 41 contained in remote transmitter 44 produces an unmodulated optical carrier and transmits it to optical modulator 43 placed in the radio station. Light modulated by the received radio signal in optical modulator 43 is transmitted back, and the radio signal () is restored with the aid of superheterodyne reception of the unmodulated and modulated carriers ((f1)). EFFECT: improved design. 4 cl, 5 dwg

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RU 2 099 881 C1

Authors

Rol'F Khajdemann[De]

Dates

1997-12-20Published

1991-06-14Filed