Delay insensitive base station-to-handset interface for radio te

Details Delay insensitive base station-to-handset interface for radio te Delay insensitive base station-to-handset interface for radio te

1995-08-22

1996-12-31

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

370307, 370280, 370281, H04Q 720

Patent

active

055901735

ABSTRACT:
A cordless telephone system, employs a remote antenna driver for converting TDD receive signals, broadcast from a cordless handset operating in a TDD (time division duplex) mode, to FDD (frequency division duplex) receive signals and for converting FDD transmit signals into TDD transmit signals and broadcasting the TDD signals to said handset. A base station operates in an FDD mode for supplying the FDD transmit signals to the remote antenna driver and for receiving the FDD receive signals from the remote antenna driver. The base station has a transmit signal path for supplying the FDD transmit signals and a receive signal path separate from the transmit signal path. The transmit signal path includes a timing generator for timing the FDD transmit signals and the receive signal path includes demodulator for demodulating the FDD receive signals symbol synchronizer and bit timer for deriving bit clock timing pulses from the FDD receive signals for controlling the timing of the receive signal path, whereby the timing of the receive signal path is controlled by the handset.

REFERENCES:
patent: 4199660 (1980-04-01), Dill et al.
patent: 4719619 (1988-01-01), Crookshanks
patent: 4928272 (1990-05-01), Ohue
VP23070 Provisional Data Sheet, VLSI Technology Feb. 1993.

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