Radio communication system using synchronous frequency hopping t

Details Radio communication system using synchronous frequency hopping t Radio communication system using synchronous frequency hopping t

1987-08-21

1989-07-18

Caldwell, Sr., John W.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455 31, 455 51, 455161, 455166, 375 1, 375115, H04B 1116

Patent

active

048500364

ABSTRACT:
A frequency-hopping radio communication system is disclosed comprising a control unit which transmits to and receives from each of a plurality of slave stations using a frequency-hopping mode of operation. During a start-up mode, the control unit communicates a starting message to each slave station using a predefined frequency. The message identifies to each slave station a frequency-hopping sequence to be used to select the frequencies from a group of frequencies for transmission to and reception from the control unit. This message also specifies to each slave station unique starting frequencies in the frequency-hopping sequence at which to begin transmitting and receiving. All slave station transmissions are synchronized to the control unit transmissions, thereby preventing any two stations from concurrently using the same frequencies for either transmitting to or receiving from the control unit.

REFERENCES:
patent: 4023103 (1977-05-01), Malm
patent: 4066964 (1978-01-01), Costanza et al.
patent: 4222115 (1980-09-01), Cooper et al.
patent: 4479226 (1984-10-01), Prabhu et al.
patent: 4554668 (1985-11-01), Deman et al.
G. R. Cooper and R. W. Nettleton, "A Spread-Spectrum Technique for High-Capacity Mobile Communications", IEEE Transactions on Vehicular Technology, vol. VT-27, No. 4, Nov. 1978, pp. 264-275.
G. Einarsson, "Address Assignment for a Time-Frequency-Coded, Spread-Spectrum System", The Bell System Technical Journal, Sep. 1980, pp. 1241-1255.

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