Signal transmission apparatus and method for optical base...

Optical communications – Hybrid communication system

Reexamination Certificate

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C398S067000

Reexamination Certificate

active

07450853

ABSTRACT:
A signal transmitting apparatus for an optical base station is disclosed. According to the invention, a base station outputs a digital IQ signal to an optical connecting unit. The optical connecting unit processes the digital IQ signal digitally, and transmits the digital signal over an optical network to a remotely located optical base station. The remote station digitally processes the signal before converting to an RF signal for transmission. The invention advantageously decreases signal loss and noise associated with analog processing in the optical connecting units and remote stations in the related art. System reliability is also improved.

REFERENCES:
patent: 5067173 (1991-11-01), Gordon et al.
patent: 5627879 (1997-05-01), Russell et al.

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