Resolving RF interference and PIM high RSSIRTWP issues via CPRI testing

Resolving RF interference and PIM (high RSSI/RTWP) issues via CPRI testing

Passive intermodulation (PIM), detected by elevated uplink noise floor metrics such as high RSSI or RTWP, can significantly disrupt the performance of a communications link—but tracking down its sources can be an expensive and time-consuming task. This session will cover fundamental principles of radio link validation and RF spectrum analysis over CPRI techniques to confirm proper radio installation, improve site KPIs and achieve substantial cost savings.

We'll explore improved testing processes for quick diagnosis of RF interference issues as well as optimized techniques to effectively interpret analysis results, enabling efficient troubleshooting and informed decision-making. Topics include:

PIM fundamentals, its causes and impact on mobile networks
An overview of RF analysis over the CPRI interface
Advantages of testing RF over CPRI
How to isolate PIM to internal versus external sources
Proven techniques to locate and mitigate external PIM at cell sites