TEST AND MEASUREMENT APPLICATION NOTES AND WHITE PAPERS
Next-Generation (3G/4G) Voice Quality Testing With POLQA
This white paper provides details on the POLQA® (Perceptual Objective Listening Quality Assessment) algorithm. According to the recommendation of International Telecommunications Union, POLQA® is the next generation mobile voice quality testing standard. An example hardware setup for standard independent audio measurements is also included in the white paper. By Rohde & Schwarz
Basic Tests of NFC Enabled Devices Using R&S Test Equipment
This Application Note describes how to perform basic NFC analog tests on NFC-enabled devices and NFC tags.
Measure Group Delay Without LO Access
In order to operate in a satisfactory matter, a mixer needs to have well controlled amplitude, phase response, and group delay. Constant group delay is especially important in wireless and satellite communications systems and in applications involving high target resolution in surveillance systems. When mixers are used to measure group delay in frequency converters, some setbacks can occur if the local oscillator isn’t accessible...
IQWizard - IQ Signal Measurement and Conversion
IQWizard is a tool for loading IQ signal files in various formats and measuring IQ signals with a FSx spectrum analyzer or ESx Receiver. The obtained IQ data in memory can be stored in various formats or be transmitted to an AMU / SMU with WinIQSIM™ or WinIQSIM2™.
Introduction To PIM Testing
Passive Intermodulation (PIM) is a distortion that can occur when electrical nonlinearities within a system act as unintentional mixers at cell sites, communications satellites, and in wireless networks.