Synchronization method and apparatus

Details Synchronization method and apparatus Synchronization method and apparatus

1991-04-19

1993-06-15

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Single message via plural carrier wave transmission

455 132, 455 561, H04B 7005, H04B 100

Patent

active

052206769

ABSTRACT:
An improved synchronization method and apparatus, according to the invention, is provided. According to the invention, in a simulcast system having a remote site receiving frames from a base site, each frame containing a predetermined number (k) of transmit sample periods, and the transmit sample clock and remote synchronization clock frequencies known (f.sub.tx and f.sub.pps respectively), the remote site synchronizes a frame as follows. First, it receives a frame from the base site. Second, it determines the sequence number n for the frame. Third, it determines the launch time the first frame was to be broadcast from the remote site. Fourth, it computes a realignment time based on [(n-1)*(k)+launch time for first frame] MOD (f.sub.tx f.sub.pps). Fifth, it transmits the first bit of the frame at the realignment time.

REFERENCES:
patent: 4696052 (1987-09-01), Breeden
patent: 4792963 (1988-12-01), Campanella et al.
patent: 4984238 (1991-01-01), Watanabe et al.
patent: 5113395 (1992-05-01), Murakami et al.
patent: 5128925 (1992-07-01), Dornstettere et al.

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