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US 2014/0194135 A1Published application
System and method for calibration of a distributed amplifier system
AssigneeZone Access Technologies, Inc.
InventorScott Terry
Life of this patent
Estimating the term…
Abstract
A system and method in a distributed amplifier system for correcting for RF losses between head end and coverage nodes by measuring RF losses in both directions; generating gains for amplifiers in both the head ends and coverage nodes; generating maximum output power limits; and adjusting the generated gains and output power limits based on downlink signal strength of cellular signals at a donor antenna.
Claims16
A method, comprising:
- measuring RF losses at multiple frequencies in a first direction between a head end and a coverage node in a site by measuring output power from the head end and comparing that to input power on a plurality of coverage nodes as received from the coverage nodes for downlink loss;
- generating gains and output power limits for each amplifier in each coverage node and the head end based on the measured RF losses;
- and
- further adjusting the generated gains and output power limits based on downlink signal strength of cellular signals at a donor antenna.
1 more element
A distributed amplifier system, comprising:
- a head end;
- and
- a plurality of coverage nodes distributed in a site and communicatively coupled to the head end;
- each coverage node including an amplifier and the head end including an amplifier,;
- wherein the head end amplifier is configured to
- measure RF losses at multiple frequencies in a first direction between the head end and the coverage nodes by measuring output power from the head end and comparing that to input power on a plurality of coverage nodes as received from the coverage nodes for downlink loss;
- generate gains and output power limits for each amplifier in each coverage node and the head end based on the measured RF losses;
- and
- further adjust the generated gains and output power limits based on downlink signal strength of cellular signals at a donor antenna.
6 more elements
A head end, comprising:
- a modem configured to communicatively couple to a plurality of nodes distributed in a site;
- and
- an amplifier;
- wherein each coverage node includes an amplifier;
- wherein the head end amplifier is configured to
- measure RF losses at multiple frequencies in a first direction between the head end and the coverage nodes by measuring output power from the head end and comparing that to input power on a plurality of coverage nodes as received from the coverage nodes via the modem for downlink loss;
- generate gains and output power limits for each amplifier in each coverage node and the head end based on the measured RF losses;
- and
- further adjust the generated gains and output power limits based on downlink signal strength of cellular signals at a donor antenna.
6 more elements
Dependencies are inferred from the claim text.