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… Read more »
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… Read more »
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)?
How to analyze a 5G New Radio (NR) waveform? This video demonstrates how to create a configuration file with the R&S®FS-K96PC OFDM vector signal analysis software from Rohde & Schwarz to analyze an OFDM-based waveform that follows the physical layer parameterization for 5G NR.
This video shows the current status of 5G New Radio (NR) in 3GPP with focus on RAN1 – the group within 3GPP that is responsible for physical layer aspects.
In July 2016 the Federal Communication Commission (FCC), the US regulator, decided to open up additional spectrum for future 5G wireless communications. This video provides a summary on the intended frequency bands for 5G in the US and explains the potential auction principles.
5G waveform candidates, such as FBMC, UFMC and GFDM, are designed to overcome limitations of LTE. For example, FBMC, UFMC and GFDM outperform LTE in spectral regrowth. Their much sharper power spectrum is a clear advantage over LTE. But what happens, if a non-linear device such as a power amplifier is used to amplify the… Read more »
5G power amplifiers typically support a power range and a frequency band. It is important to characterize the amplifier for these settings using power and frequency sweep and 5G waveform candidates such as FBMC, UFMC and GFDM. This video demonstrates a power vs. frequency sweep while measuring error vector magnitude (EVM), crest factor, adjacent channel… Read more »
In this video we explain how to use a scrambled bit sequence as payload in form of a data list for 5G waveform candidates, such as FBMC, UFMC or GFDM, using the R&S®SMW200A vector signal generator.
mmWave frequencies provide quite some challenges, including a much higher Doppler shift compared to sub-6 GHz frequencies when targeting higher speeds. This puts some significant challenges on system design to enable full mobility. In this video we explore the fundamentals for mobility in a cellular system and show how (pre-)5G and 5G systems eventually tackle… Read more »