Radio transmission system

Details Radio transmission system Radio transmission system

1996-09-30

1999-05-11

Ghebretinsae, Temesghen

Pulse or digital communications

Repeaters

Testing

375211, 375219, 370315, 455 7, 455 21, H04B1/69;3/36

Patent

active

059035927

ABSTRACT:
A radio transmission system is provided which includes a master station and a plurality of series connected substations connected to the master station via a radio channel. First receiving unit receives a plurality of modulated waves which have been modulated by means of spread spectrum. Accordingly, demodulating unit may only have a capability to process a baseband signal destined therefor, in order to demodulate the modulated wave destined therefor from among the modulated waves. On the other hand, the modulated waves received by the first receiving unit are transmitted by first transmitting unit in a first transmission direction to an adjacent substation, and thus are relayed as they are without being demodulated or modulated in the middle.

REFERENCES:
patent: 4490818 (1984-12-01), Otsuka
patent: 5708684 (1998-01-01), Ueda
patent: 5764700 (1998-06-01), Makinen

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