Communication Components, Inc. GPS Over Fiber Systems provides an innovative and cost effective means of routing the GPS signal over a fiberoptic network to a remote Base Station location. This system is ideal for CRAN (Centralized Radio Access Network) deployments and In-building DAS installations where the Base Station is located in a remote location with no direct availability of GPS signal.

The CCI GPS Over Fiber System consists of small footprint outdoor rated GPS to Fiberoptic Transmitter and an indoor Fiberoptic to GPS Receiver that are connected together using a SM single mode fiberoptic cable or alternatively a hybrid fiberoptic cable that concurrently provides DC power. The system is highly flexible and can be powered with AC or DC on the rooftop or from the GPS Receiver via a hybrid cable when neither power options are available.

The GPS-FO-Tx-1 GPS to Fiberoptic Transmitter upconverts the GPS RF signal from any active GPS antenna to the optical band to enable transmission of the signal up to 4 kilometers over a single fiberoptic line. GPS Antenna bias current is provided and comprehensive alarm detection and reporting of the GPS antenna and the fiberoptic transmitter are delivered over the single fiber to the companion Fiberoptic to GPS Receiver for local display and monitoring.
The Fiberoptic Transmitter can be powered via a hybrid fiberoptic cable or from any 48VDC source. An optional outdoor rated AC to 48VDC power supply is also available. The laser transmitter utilizes ultra-linear, high dynamic range DFB laser technology. APC (Automatic Power Control) is also used to stabilize the optical power.

The GPS-FO-Rx-8 Fiberoptic to GPS Receiver downconverts the optical signal from the GPS to Fiberoptic Transmitter back to its original RF signal level. Eight GPS RF outputs are available on the front panel. A 48VDC output power supply is also available to power the outdoor GPS Transmitter over a hybrid fiber cable. A 1 AMP resettable fuse is provided on the 48VDC output in order to insure the output power does not exceed the 100VA maximum mandated by many building electrical codes. CCI also offers the GPS-FO-Rx-8P Fiberoptic to GPS Receiver which is an optional configuration that supports sites that have a -48V supply with a positive ground.

Summary LED status indicators with corresponding dry-contact relay closure outputs are provided to monitor the status of the receiver as well as the companion Outdoor GPS Transmitter and active GPS antenna/LNA. Detailed status and control for the Receiver, Transmitter and Antenna are also available via a USB port command window. The optical receiver uses ultra-linear PIN photodiodes in unison with high linearity RF Amplifiers.