Patent ID: 8818299

Claim:
A distributed antenna system, comprising: a downlink communication path configured for communicatively coupling a transmit antenna to a base station; an uplink communication path configured for communicatively coupling a receive antenna to the base station; a non-duplexer isolator sub-system electronically configured for isolating uplink signals traversing the uplink communication path from downlink signals; and a gain adjuster positioned in the uplink communication path, the gain adjuster being configured to adjust a gain of the uplink signals by attenuating the gain of the uplink signals in response to the gain exceeding a threshold; wherein the non-duplexer isolator sub-system comprises: a first digital summer positioned in the uplink communication path and configured for mitigating downlink signals traversing the uplink communication path, wherein the downlink signals are mitigated using a mitigation signal from a first reference communication path between the uplink communication path and the downlink communication path, and the first reference communication path, wherein the first reference communication path comprises a second digital summer, wherein the second digital summer is configured for mitigating additional downlink signals transmitted at frequencies in an uplink band and traversing the first reference communication path, wherein the additional downlink signals are mitigated using a second mitigation signal from a second reference communication path between the second digital summer and the downlink communication path.