Abstract

Receiving sensitivity of communication system is required to improve as the recent growth of data service in mobile communication. Thus, the interference caused by passive intermodulation (PIM) attracted more attention in the research of mobile communication. On the other hand, point of interface (POI) plays a more and more important role in practical application at recent years, in order to solve the problem that multiple signals from different mobile operator access in one indoor distribution system at the same time. The measurement of PIM is a useful way to predict and control the interference of PIM. It cannot work by using the traditional system of PIM measurement in POI. A new and advanced test system for passive intermodulation measurement to POI is presented in this paper, which can not only measure the passive intermodulation of POI but also improve the efficiency of measurement.

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