Squelch sub-system using correlation between uplink paths

A system comprising:

• a first signal path configured to receive a first uplink signal and a second signal path configured to receive a second uplink signal;
• a correlator communicatively coupled to the first signal path and the second signal path and configured to configured to produce respective correlation data indicative of any of correlation between the respective first uplink signal and the respective second uplink signal;
• a comparator communicatively coupled to the correlator and configured to cause, based on receiving the correlation data, a first variable gain device in the first signal path to adjust a gain of the first uplink signal and a second variable gain device in the second signal path to adjust a gain of the second uplink signal;
• a first power detector communicatively coupled to the first signal path and configured to output a first detected power level for the first uplink signal to the comparator;
• and
• a second power detector communicatively coupled to the second signal path and configured to output a second detected power level for the second uplink signal to the comparator;
• wherein the comparator is further configured to cause the first variable gain device to adjust the gain of the first uplink signal and the second variable gain device to adjust the gain of the second uplink signal based on the first detected power level and the second detected power level being below a threshold power level.

A method comprising:

• receiving a first uplink signal in a first signal path;
• receiving a second uplink signal in a second signal path;
• producing correlation data indicative of any correlation between the first uplink signal and the second uplink signal;
• determining that the first uplink signal is uncorrelated with the second uplink signal by performing a correlation function on a number of samples obtained from each of the first uplink signal and the second uplink signal, the number of samples being set by a correlation window, and
• causing, based at least in part on the correlation data, a first variable gain device in the first signal path to adjust a gain of the first uplink signal and a second variable gain device in the second signal path to adjust a gain of the second uplink signal.

A distributed antenna system comprising:

• at least one master unit;
• and
• a plurality of remote units, each of the plurality of remote units associated with a respective one or more antennas;
• wherein each of the remote units is communicatively coupled to the master unit;
• wherein the distributed antenna system comprises, for each remote unit:
• a respective first signal path configured to receive a respective first uplink signal;
• a respective second signal path configured to receive a respective second uplink signal;
• a respective correlator communicatively coupled to the respective first signal path and the respective second signal path and configured to produce respective correlation data indicative of any of correlation between the respective first uplink signal and the respective second uplink signal, wherein the correlator is configured to determine that the first uplink signal is uncorrelated with the second uplink signal by performing a correlation function on a number of samples obtained from each of the first uplink signal and the second uplink signal, the number of samples being set by a correlation window;
• and
• a respective comparator communicatively coupled to the respective correlator and configured to cause, based on receiving the respective correlation data, a respective first variable gain device in the respective first signal path to adjust a gain of the respective first uplink signal and a respective second variable gain device in the respective second signal path to adjust a gain of the respective second uplink signal.