VIAVI CellAdvisor 5G: 5GNR RF Characterisation
Summary
TLDRThis video tutorial demonstrates the ease of characterizing a 5G signal using the Salvaso 5G analyzer. Key properties like channel bandwidth and beamforming are discussed, highlighting the signal's complexity in frequency and time. The tutorial guides viewers through the process of setting up the analyzer, adjusting the power level, and using a persistence spectrum to clearly identify a 5G signal with a 95 MHz transmission bandwidth and a 28.8 MHz SSB aligned with the channel. For more insights, viewers are directed to Vicom's website.
Takeaways
- 📶 The video demonstrates how to characterize a 5G signal using the VRV Sullivan tool.
- 🌐 Key properties of 5G signals include channel bandwidth, which ranges from 100 to 400 MHz, and the use of millimeter wave technology.
- 📡 Beamforming is a critical aspect of 5G signals, with signals being broadcast in SSV blocks and having a frequency offset within the channel.
- 🔄 Beam signals in 5G are not continuously transmitted but follow a cycle, with beams broadcasted every 20 milliseconds.
- 🕒 Despite the complexity in frequency and time, the Salvaso 5G tool can easily characterize 5G signals using the persistence spectrum method.
- 🛠️ The process begins by accessing the main menu and selecting the real-time spectrum analyzer persistence spectrum option.
- 🔍 Users can set the slicer for 5G measurement either by channel or by frequency; the script uses channel number as an example.
- 📈 The script guides through setting the power level by adjusting the amplitude, including the removal of the default 20 dB attenuator and enabling preamplification.
- 📊 Adjustments on the trace detector are necessary for TDD signals, including peak detection and resolution increase from 1 Hz to 30 kHz.
- 📈 The final result shows a clear 5G signal with a transmission bandwidth of 95 MHz and an SSB of 28.8 MHz aligned with the channel.
- 🔗 For more information, viewers are directed to visit Vicom's website.
Q & A
What is the main topic of the video?
-The main topic of the video is demonstrating how to characterize a 5G signal using the Salvaso 5G tool.
What are the key properties of a 5G signal mentioned in the script?
-The key properties of a 5G signal mentioned are channel bandwidth, millimeter wave capabilities ranging from 100 to 400 megahertz, beamforming, and the transmission cycle of beams every 20 milliseconds.
What is the range of channel bandwidth for 5G signals in millimeter wave?
-The channel bandwidth for 5G signals in millimeter wave can range from 100 to 400 megahertz.
What is beamforming and how does it relate to 5G signals?
-Beamforming is a signal processing technique used in 5G to improve signal strength and quality. It involves sending signals out in SSV blocks that can have a frequency offset within the channel but are not distributed across the channel bandwidth.
How often are the beams broadcasted in 5G signals?
-The beams in 5G signals are broadcasted every 20 milliseconds.
What is the Salvaso 5G tool used for in the video?
-The Salvaso 5G tool is used to characterize 5G signals by analyzing their properties using a persistence spectrum.
How does one initiate the process of characterizing a 5G signal in the Salvaso 5G tool?
-One initiates the process by going into the main menu, selecting 'Real-Time Spectrum Analyzer Persistence Spectrum', and assigning a specific title to the measurement.
What are the two methods mentioned for setting the slicer in the Salvaso 5G tool to measure the 5G signal?
-The two methods mentioned are setting the slicer by channel or by frequency.
Which band is selected in the video for characterizing the 5G signal?
-In the video, the 5DNR band is selected for characterizing the 5G signal.
How is the power level set in the Salvaso 5G tool?
-The power level is set by making adjustments on the amplitude, including removing the default attenuator of 20 dBs and enabling the preamplifier for increased sensitivity.
What adjustments are made to the trace detector for analyzing a Time Division Duplex (TDD) 5G signal?
-For analyzing a TDD 5G signal, adjustments are made on the trace detector to peak, and the resolution is increased from 1 Hertz to 30 Kilohertz.
What is the transmission bandwidth and SSB of the 5G signal shown in the video?
-The transmission bandwidth of the 5G signal shown in the video is 95 megahertz, and the SSB (Sub-Spectrum Block) is 28.8 MHz, which is aligned with the channel.
Outlines
📶 Characterizing 5G Signals with VRV Sullivan
In this video, the presenter introduces the process of characterizing 5G signals using VRV Sullivan. Key properties of 5G signals, such as channel bandwidth ranging from 100 to 400 MHz and the use of beamforming in millimeter wave, are highlighted. The video demonstrates how to use the persistence spectrum feature of the Salvaso 5G device to analyze these signals effectively. The presenter guides viewers through the steps of setting up the real-time spectrum analyzer, choosing the right measurement title, and configuring the device to measure by channel number. Adjustments to the power level and signal sensitivity are also discussed, including the use of a preamplifier to enhance the signal visibility. The video concludes with the successful visualization of a 5G signal with a 95 MHz transmission bandwidth and a 28.8 MHz SSB aligned with the channel.
Mindmap
Keywords
💡5G
💡Channel Bandwidth
💡Millimeter Wave
💡Beamforming
💡SS/PBCH Block
💡Frequency Offset
💡Time Division Duplex (TDD)
💡Persistence Spectrum
💡Real-Time Spectrum Analyzer
💡Preamplifier
💡Trace Detector
💡Resolution
Highlights
Introduction to characterizing a 5G signal with VRV Sullivan.
Key properties of a 5G signal include channel bandwidth and millimeter wave capabilities.
Beamforming is a critical feature, with signals sent in SSV blocks.
SSV blocks are not evenly distributed across the channel bandwidth but allow for frequency offset.
Beam signals have a transmission cycle, broadcasted every 20 milliseconds.
Salvaso 5G can characterize 5G signals using the persistence spectrum method.
Accessing the real-time spectrum analyzer and persistence spectrum from the main menu.
Assigning a specific title to the measurement for clarity.
Measuring the 5G signal by channel or frequency, with a demonstration using channel number.
Selecting the 5DNR band and entering the channel number for the signal under test.
Adjusting the power level by removing the default attenuator and enabling preamplification.
Observing the signal in persistent spectrum and adjusting the trace detector for a TDD signal.
Increasing the resolution bandwidth from 1 Hz to 30 kHz for clearer signal visibility.
Identifying a 5G signal with a 95 MHz transmission bandwidth and a 28.8 MHz SSB aligned with the channel.
Invitation to learn more about the process on Vicom's website.
Transcripts
hello everyone
in this video we're going to show how
easy is to characterize a 5g
signal with vrv sullivan
there are a couple of key properties in
a 5g and our signal
first is channel bandwidth in millimeter
wave
it can go from 100 to 400 megahertz
second is beamforming being broadcast
are being sent out in ssv blocks which
are not distributed across the
channel bandwidth but you can have a
frequency offset
within the channel
also the beam signals are not constantly
transmitted
so they have a cycle so we look at the
signal in time
the beams are being broadcasted every 20
milliseconds
despite this complexity in frequency and
time
the salvaso 5g can easily characterize
these 5g
signals using persistence spectrum
first we go into the main menu and
select
real-time spectrum analyzer persistence
spectrum
and select a specific title that we want
to assign to that measurement
there are a couple of ways that we can
set the slicer 5g
to measure the 5g signal
by channel or by frequency
in this case we're going to get it done
by channel number
so we're going to be selecting the 5dnr
band
and then we're gonna just enter the
corresponding channel number
of the signal under test
then we're gonna set the power level by
making adjustments on the amplitude
one of the first items is to remove
the attenuator by default is 20 dbs
and we have a little bit of a signal but
we need to increase the sensitivity so
we're going to enable the preamplified
now we can see the signal in persistent
spectrum
but since it's a tdd signal we're gonna
make adjustments on the trace detector
to peak and the other adjustment that
we're gonna make
is increase the resolution going from
one
hertz to 30 kilohertz
now we can clearly see a 5g in our
signal with a transmission bandwidth of
95 megahertz
and the ssb of 28.8 mhz that is
aligned with the channel
find out more at vicom's website
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