Pulse or digital communications – Repeaters – Testing
Patent
1989-10-10
1991-01-08
Safourek, Benedict V.
Pulse or digital communications
Repeaters
Testing
34082501, 455 8, H04L 2728
Patent
active
049842528
ABSTRACT:
A system applicable to a digital radio communication system for switching a regular channel and a standby channel includes a demodulator associated with the standby channel. The demodulator has a phase locked loop for clock recovery the band width of which is variable. The band width of the phase lock loop is increased only when a channel switching operation is under way so as to guarantee clock synchronization.
REFERENCES:
patent: 4417348 (1983-11-01), Abbruscato
patent: 4680776 (1987-07-01), Ikeuch et al.
patent: 4773081 (1988-09-01), Morimoto
patent: 4797903 (1989-01-01), Itoh
patent: 4811359 (1989-03-01), Nakajima et al.
Chin Stephen
NEC Corporation
Safourek Benedict V.
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