Pulse or digital communications – Repeaters
Patent
1994-03-21
1996-04-16
Chin, Stephen
Pulse or digital communications
Repeaters
455 7, 455 531, H04B 336, H04L 2520, H04L 2552
Patent
active
055090281
ABSTRACT:
The method is used to transmit digital signals by radio over a predefined frequency band between a base station and mobile stations. At least one repeater station is used to receive radio signals transmitted by the base station and to retransmit radio signals to the mobile stations over the same frequency band. The spectrum of the radio signals transmitted by the base station to the repeater station is reversed relative to the spectrum of the radio signals retransmitted by the repeater station to the mobile stations. The invention is particularly applicable to radiotelephone communications networks.
REFERENCES:
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patent: 4581765 (1986-04-01), Stec
patent: 4718108 (1988-01-01), Davidson et al.
patent: 5060266 (1991-10-01), Dent
patent: 5081703 (1992-01-01), Lee
patent: 5131010 (1992-07-01), Derrenge et al.
patent: 5168522 (1992-12-01), Simanis et al.
patent: 5260989 (1993-11-01), Jenness et al.
IEEE Transactions on Vehicular Technology vol. VT-32, No. 4, Nov. 1983, New-York, US; pp. 254-259 Masahichi Kishi et al "Digital Signal Processing Spectrum Inversion for Analog Speech Channels".
"Technical Terms" 2nd edition, Daniel N. Lapedes.
Bocure Tesfaldet
Chin Stephen
Matra Communication
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