Applications & White Papers for GSM / GPRS / EDGE Evolution / VAMOS

  • The R&S®SMW200A vector signal generator combined with the R&S®FSW signal and spectrum analyzer offers fast and simple power amplifier testing including envelope tracking and digital predistortion, effectively replacing complex test setups.

  • This application note provides an application program for level alignment, test automation and reporting with PESQ, POLQA and delay measurements on the Audio Analyzer R&S®UPV or R&S®UPV66.

  • First integrated data end-to-end solution with IP analysis and protocol statistics allows detailed analysis of apps.

  • This application notes introduces the Multi-Standard Radio Analyzer function of the R&S®FSW and shows how it performs the measurement on multi-standard radio transmitters. It reveals interactions caused by the coexistence of signals of different cellular standards and localizes the root cause. With an example of a base station signal consisting of three radio access technologies (GSM/WCDMA/LTE FDD) it shows how easy interactions can be found. The R&S®FSW is the ideal tool for trouble shooting tasks with its combination of a large bandwidth and the versatile Multi-Standard Radio Analyzer in one measurement instrument.

  • 3GPP Release 9 Technical Specification (TS) 37.141 covers multistandard radio base station conformance testing. Multistandard radio includes four standards of mobile communications: GSM, WCDMA, TD-SCDMA, and LTE. This application note introduces the concept of multistandard radio base stations as well as solutions for transmitter and receiver tests based on Rohde & Schwarz signal generators and Rohde & Schwarz signal and spectrum analyzers.

  • Short measurement time in conjunction with high accuracy and repeatability of results are essential for efficient testing of mobile phone power amplifiers. Power Meter R&S®NRP, Signal Generator R&S®SMIQ, Spectrum Analyzers R&S®FSP/FSU/FSQ and Power Supply R&S®NGMO2 offer optimum characteristics such as high accuracy, fast settling speed and short measurement time in programmed mode. This application note concentrates on testing GSM/EDGE mobile power amplifiers and shows typical test setups and programming examples for Signal Generator R&S®SMIQ and Spectrum Analyzer R&S®FSP/FSU/FSQ, benchmark numbers and repeatability results.

  • 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. GSM PESQ is an add-on tool for CMUgo for automatic measurement of the PESQ for GSM mobile phones according to recommendation ITU-T P.862.1 featuring selectable fading profiles, frequency hopping sequences and variable Additional White Gaussian Noise (AWGN).

  • The R&S®CMW500 and R&S®SMBV100A are the ideal team for testing your eCall and ERA-Glonass cellular modems and GNSS receivers in the lab.

  • Existing GSM mobile communication systems have the potential to double voice capacity by adding the “Voice services over Adaptive Multi-user channels on One Slot” (VAMOS) feature as specified in the 3rd Generation Partnership Project (3GPP) GSM/EDGE Radio Access Network (GERAN) Release 9 specifications. This application note describes the VAMOS feature from an air interface perspective in detail and specifically illustrates the VAMOS testing solution offered by Rohde & Schwarz test equipment.

  • GPRS (General Packet Radio Service) and EDGE (Enhanced Data Rates for GSM Evolution) provide data capabilities in widely deployed 2G networks reaching peak and average data rates of 384kpbs and 200kbps, respectively. Within 3GPP Release 7, further improvements to GPRS/EDGE have been specified in the context of EDGE evolution. This application note introduces key features of EDGE evolution and outlines the changes to the radio interface.

  • This application note describes how to generate GSM signals for wide ranging receiver tests under fading conditions for GSM/GPRS/Edge. The test setup requires an R&S®CMU Radio Communication Tester with IQ-IF interface option CMU-B17 and an R&S®SMIQ vector signal generator or baseband fading simulator ABFS for generating GSM. The GSMFadLevCor program included with this application note performs a semi automatic level correction of the power fed to the Device Under Test (DUT).

  • 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.

  • R&S®NRPView has been replaced by software Power Viewer Plus, which is provided together with software R&S®NRP Toolkit.
    Please use the link given below to download R&S®NRP Toolkit.

    NRP-Toolkits

  • This Application Note describes how to test and perform measurements on mobile phones in compliance with the GSM standard using the R&S®CMU200 by means of the remote-control program CMUgo or manual operation.

  • Polar modulation is a method where digital modulation is realized as a combination of phase and amplitude modulation, rather than using an I/Q modulator. This technique becomes increasingly important in mobile communication. This application note shows how to generate polar modulation with an R&S®SMU200A Vector Signal Generator.

  • The drive test solution from Rohde & Schwarz features convenient data export to visualize your radio network performance in Google Earth.

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