A large number of cellular operators in an area causes high interference effects. One problem is high received total wideband power (RTWP). To solve this problem, an RF band-pass filter device can be implemented on a UMTS system. QoS measurements with the Huawei M2000 application and Drive Test were carried out, with the analysis capturing RTWP, Circuit-Switched access rate, Packet-Switched access rate, and Received Signal Code Power (RSCP) value. The results indicate an increase in QoS.
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