Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof

A wireless communication system, comprising:

• a downlink base transceiver station (BTS) interface configured to receive downlink electrical radio frequency (RF) signals from at least one BTS;
• at least one optical interface module (OIM) configured to:
• receive and convert the downlink electrical RF signals from the downlink BTS interface into downlink Radio-over-Fiber (RoF) signals on at least one communication downlink;
• and
• receive and convert uplink RoF signals from at least one remote antenna unit (RAU) into uplink RF electrical signals on at least one communication uplink;
• an uplink BTS interface configured to receive and communicate the uplink electrical RF signals from the at least one communication uplink to the at least one BTS;
• and
• a controller configured to:
• determine a total downlink loss for the at least one communication downlink;
• determine a downlink BTS loss from the total downlink loss;
• calibrate a downlink BTS calibration gain in the downlink BTS interface based on the downlink BTS loss;
• and
• calibrate at least one RAU calibration gain in the at least one RAU as the total downlink loss minus the downlink BTS loss,
• wherein the controller is configured to calibrate the downlink BTS calibration gain in the downlink BTS interface by setting the downlink BTS calibration gain in at least one attenuator in the downlink BTS interface.