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  • Spectral and Time-Domain Analysis of Recorded Wave Files on the Audio Analyzer R&S® UPV

    The instrument setup provided in this application note allows to analyze a degraded speech signal stored into a wave file and to display its FFT spectrum and waveform.

  • Next-Generation (3G/4G) Voice Quality Testing with POLQA®

    This white paper describes the POLQA® algorithm implemented in the R&S®UPV Audio Analyzer and shows an example hardware setup for standard independent audio measurements.

  • Replacing R&S® CMU200 with R&S® CMW500 in 2G and 3G Speech Test Applications

    The combination of R&S® CMU200 and R&S® UPV is in use for various tests of mobile phone speech functionality, such as acoustic tests according to 3GPP 26.132 or speech quality tests according to ITU-T P.862 (PESQ®) or ITU-T P.863 (POLQA®). This application note explains how to replace the R&S® CMU200 in these tasks with R&S® CMW500.

  • CMUCopy - Transferring CMU Hardcopy to PC using the IEEE Bus or the serial interface

    This application note has been replaced by application note 1MA74 RSCommander.

  • Additional Tests on CDMA2000® Mobile Stations in Accordance with Standard TIA-98

    Most of the tests specified in the standard TIA-98 that a CDMA2000® mobile station has to fulfill can be performed by the Universal Radio Communication Tester R&S®CMU200 without further assistance. Other tests, however, require additional instruments, for instance for generating interfering signals. Some tests of the standard TIA-98 need features that a tester optimized for production cannot offer, for example high dynamic spectrum analysis up to 12.75 GHz. This Application Note shows how to perform these tests easily with the remote-control software CMUgo, using the R&S®CMU200 in combination with R&S®SMU, R&S®SMJ, R&S®SMIQ, or R&S®SML signal generators, and R&S®FSQ, R&S®FSU, R&S®FSP, or R&S®FSL spectrum analyzers. New test items and sequences will therefore be included in the CMUgo software v1.9.8 to remote-control the R&S®CMU200, as well as the signal generators and spectrum analyzers. They are presented in this Application Note.

  • CDMA2000®: Packet Data Testing with R&S®CMU200

    The Rohde & Schwarz R&S CMU200 can be configured to perform packet data testing in a Mobile IP or Simple IP environment. This application note is intended as a guide to configuring the necessary Mobile IP or Simple IP network elements and R&S CMU200 instrument.

  • Importing Data in ARB, Custom Digital Modulation and RF List Mode

    The foregoing application note is intended for everyone who desires to become more familiar with the use and upload of custom data in ARB, digital modulation and RF list mode. Particularly, this note describes the instruments R&S® SMW200A, R&S® SGT100A, R&S® SMBV100A, R&S® SMU200A, R&S® SMJ100A and R&S® SMATE200A and provides an overview of already available solutions as well as it gives hints for the writing of own applications. Please also see the application note 1GP88 for the ARB Toolbox software and the application note 1GP96 for the CDM-Toolbox software.

  • WCDMA / CDMA2000® Intermodulation Calibration for Zero IF Chipsets

    The R&S®CMU200 provides the signals required for 2nd order intermodulation (IM2) performance verification for WCDMA / CDMA2000® chipsets with zero IF design. This application note is a guide to configure the R&S® CMU200 for such an application.

  • PESQ® Measurement for CDMA2000® with R&S®CMUgo

    Recent mobile test methods could not evaluate the quality of data reduced speech signals with different coded and decoded signals. The Perceptual Evaluation of Speech Quality (PESQ) provides the solution for this measuring problem. CDMA2000® PESQ is an add-on tool for CMUgo for automatic measurement of the PESQ for CDMA2000® mobile phones according to recommendation ITU-T P.862.1 featuring selectable fading profiles and variable Additional White Gaussian Noise (AWGN).

  • Path Compensation for MS Fading Tests

    As well as static tests, modern mobile communication standards also stipulate measurements under fading conditions, sometimes with additional white gaussian noise AWGN. Rohde & Schwarz supports these tests with the combination of the R&S®CMU200 Radio Communication Tester and the R&S®SMU200A or R&S®AMU200A Vector / Baseband Signal Generator and Fading Simulator. Applying fading and noise always raises the crest factor of a signal considerably. Thus, automatic path attenuation inside the Rohde & Schwarz baseband fader prevents the new signal peaks from being clipped at I/Q full scale. Any additional attenuation in the baseband, however, makes the RF output fall below its intended level. This application note shows how to achieve an accurate RF output level by compensating for the I/Q attenuation - without modifying the test setup or using additional instruments.

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