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DETERMINING ACTUAL LOOP GAIN IN A DISTRIBUTED ANTENNA SYSTEM (DAS)

  • US 20160352612A1
  • Filed: 05/18/2016
  • Published: 12/01/2016
  • Est. Priority Date: 06/01/2015
  • Status: Active Grant
First Claim
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1. A distributed antenna system (DAS) configured to enable actual loop gain measurement, comprising:

  • a plurality of remote antenna units (RAUs);

    a head end unit (HEU) configured to;

    distribute a downlink signal to at least one RAU among the plurality of RAUs; and

    receive an uplink signal from the at least one RAU;

    a switch circuit disposed in a downlink path in the HEU and configured to disconnect the downlink path into a first contact point and a second contact point;

    a signal generator communicatively coupled to the first contact point and configured to provide at least one test signal having a first power level to the first contact point for distribution to the at least one RAU on the downlink path; and

    a receiver communicatively coupled to the second contact point and configured to;

    receive at least one loopback test signal having a second power level from the second contact point;

    determine a difference between the first power level of the at least one test signal at the first contact point and the second power level of the at least one loopback test signal at the second contact point; and

    determine an actual loop gain of the DAS based on the determined difference between the first power level and the second power level.

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