850 MHz & 900 MHz Coexistence

Network administrators and engineers around the globe acknowledge that 850 MHz and 900 MHz spectrum generate interference problems when deployed in the same geographic area. This interference occurs in two ways: -Receiver blocking and resultant intermodulation interference, caused by high power levels from the 850 MHz downlink (DL) transmit hitting the front end of the 900 MHz BTS receiver. -Out-of-band emissions from 850 MHz BTS entering the 900 MHz uplink (UL) band.