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Thread: 5G Wireless Communications, Rohde & Schwarz GmbH & Co KG, Munich, Germany

  1. #31


    Demystifying 5G – UFMC signal generation

    Published on Mar 29, 2017

    How to generate UFMC signals? Universal filter multi carrier (UFMC) is one of the deliverables of the EU-funded 5GNOW project. Rohde & Schwarz implemented UFMC and other 5G waveform candidates in their signal generator and signal analyzer solutions. This enables researchers to compare waveform candidates with each other and their own proposals, perform hardware in-the-loop experiments such as analyzing the impact of non-linear devices (e.g. power amplifier) to the signal characteristics and optimize RF front-end designs.

  2. #32


    Demystifying 5G - Full test support of Verizon Wireless 5GTF specification

    Published on Jul 26, 2017

    In July 2016, Verizon Wireless and its partners published a 5G technology standard based on 3GPP's Release 12 specification for LTE. Known as 5GTF, the specification targets Fixed Wireless Access (FWA) as application scenario with no mobility. The targeted frequency band is 28 GHz. Rohde & Schwarz implemented this specification into its signal generator and spectrum analyzer solutions to allow early adaptors the testing of mmWave RF components, RF frontends, 5G remote radio heads (RRH), customer premise equipment (CPE) and modem implementations. This video provides an overview on 5GTF test solutions based on the R&S SMW200A vector signal generator and the R&S FSW signal and spectrum analyzer from Rohde & Schwarz.
    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  3. #33


    Demystifying 5G - What causes the high PAPR in the V5GTF signal?

    Published on Jul 27, 2017

    Implementing the Verizon Wireless 5GTF specification reveals a high overall peak-to-average power ratio (PAPR) for a downlink only signal. In this video, we look at what causes the high signal peaks.
    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  4. #34


    Demystifying 5G – V5GTF crest factor reduction (CFR) - a simple way out?

    Published on Jul 28, 2017

    A high peak-to-average power ratio (PAPR) is not beneficial as it challenges the non-linear power amplifier operation close to compression for maximum efficiency. A possible way out is to apply crest factor reduction (CFR) techniques such as to clip high signal peaks. This video demonstrates a simple method to clip (any) waveform, including the Verizon Wireless 5GTF signal, using software tools for signal generation and analysis from Rohde & Schwarz.
    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  5. #35


    Demystifying 5G - How about clipping a V5GTF signal?

    Published on Jul 31, 2017

    This video compares the performance of a V5GTF standard-compliant signal showing a standard-dependent high peak-to-average power ratio (PAPR) with a clipped version of such a signal. Did the crest factor improve? How about the error vector magnitude (EVM)?
    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  6. #36


    Demystifying 5G - Testing the true performance of ADCs

    Published on Sep 4, 2017

    Enhanced mobile broadband (eMBB), one of the 5G use cases, targets wider bandwidths at frequencies in the mmWave range to achieve the promised Gbps experience. This requires new, high-resolution digital-to-analog converters (DACs) and analog-to-digital converters (ADCs), such as the recently launched ADC12DJ3200 from Texas Instruments. They demand highest signal purity for testing their true performance. The R&S SMA100B RF and microwave analog signal generator from Rohde & Schwarz combines highest output power, lowest phase noise and lowest wideband noise making it ideal for high-resolution ADC/DAC testing as demonstrated in this video.

    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  7. #37


    Demystifying 5G - Wideband noise and its impact on testing the true performance of ADCs

    Published on Sep 5, 2017

    High-resolution digital-to-analog converters (DACs) and analog-to-digital converters (ADCs) such as the recently launched ADC12DJ3200 from Texas Instruments are particularly required for 5G mobile communication applications. Reliable testing of such components demands signal generators with highest signal purity. This video focusses on wideband noise and its impact on the ADC performance. We compare the wideband noise performance of conventional signal generators with the R&S SMA100B RF and microwave analog signal generator from Rohde & Schwarz that offers an improved wideband noise performance of more than 10 dB.

    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  8. #38


    Demystifying 5G - Ready for testing 5G NR sub-6 GHz devices in production with the R&S CMW100

    Published on Nov 22, 2017

    3GPP's 5G NR will support frequency ranges up to 52.6 GHz, but initial 5G designs will use frequencies below 6 GHz with focus on 3.5 GHz. For sub-6 GHz carrier frequencies, 3GPP currently discusses a maximum bandwidth per component carrier of 100 MHz. The R&S CMW100 communications manufacturing test set with a supported bandwidth of 160 MHz is ready for testing initial 5G NR sub-6 GHz wireless devices in production. The video demonstrates a typical manufacturing test case using a 5G NR-like waveform.

    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

  9. #39


    Demystifying 5G - Minimizing the impact of accessories when testing 5G RF components

    Published on Nov 24, 2017

    Testing RF components, such as power amplifiers and filters, or prototype transceiver modules becomes much more complex with higher frequencies, particularly in the mmWave range used for 5G. Calibrating the test equipment to minimize their impact was extensive and time-consuming, and a change in power level or frequency range often required a recalibration. The R&S SMW200A vector signal analyzer and R&S FSW signal and spectrum analyzer from Rohde & Schwarz make the calibration of the signal path towards the device under test (DUT) simple and easy, as demonstrated in this video.

    The demystifying 5G video series discusses main topics related to 5G including requirements, timeline, potential frequency and waveform candidates.

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