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Rohde & Schwarz supports 5G signal

generation and analysis based on Verizon 5G

open trial specifications

Rohde & Schwarz has successfully demonstrated the

generation and analysis of 5G signals based on the

characteristics as specified in the Verizon open trial

specifications. The R&S SMW200A vector signal generator

and the R&S FSW signal and spectrum analyzer both

provide outstanding test and measurement capabilities,

resulting in an EVM performance of 1 % when applying

these 5G signals.

In July 2016, Verizon Wireless, a tier 1 network operator

in the United States, supported by leading infrastructure,

chipset and terminal manufacturers, published technical

specifications that describe thephysical layer characteristics

of a 5G signal. The specified signal is derived from LTE and

adapted to be used at cm frequencies, initially 28 GHz but

also 39 GHz. Those frequencies were recently allocated

for 5G wireless communications by the local regulator,

the Federal Communications Commission (FCC). The

proprietary signal is a multicarrier OFDM signal with a

subcarrier spacing of 75 kHz. It is aiming for a bandwidth of

100 MHz per component carrier. Up to eight carriers can be

aggregated. The basic mode of operation is TDD.

Thanks to their built-in flexibility, the Rohde & Schwarz

signal generation and analysis instruments already support

the basic characteristic of the specified 5G Verizon signal.

The R&S SMW200A vector signal generator equipped

with theR&S SMW-K114 5G waveform candidate software

option makes it easy to configure OFDM signals with

the required 75 kHz subcarrier spacing and 100 MHz

bandwidth. Additionally, preamble and user data settings

enable creation of 5G signal with the basic characteristics

as specified by the Verizon 5G technical forum. This means

that reference symbols can be set, and data modulation

such as QPSK, 16QAM, 64QAM and even higher-order

modulation schemes such as 256QAM can be applied.

Using the R&S FS-K96 OFDM vector signal analysis

software in combination with the R&S FSW signal and

spectrum analyzer allows the full characterization of

such a 5G signal by simply loading into the software a

configuration file that reflects the parameterization of the

5G Verizon signal.

When characterizing DUTs such as newly developed power

amplifiers for the cm frequency range, test instruments

themselves can influence the measurement results.

Rohde & Schwarz achieved outstanding performance with

theR&S SMW200A and R&S FSW in the trial. When using

the test instruments to measure the EVM of a 5G signal at

28 GHz, measurement results were below 1 % across a 10

dB power sweep, meaning that the test instruments did not

impact the measurement.

With these testing capabilities, Rohde & Schwarz as a

leading supplier of test and measurement solutions for LTE-

Advanced and LTE-Advanced Pro, shows its commitment

to provide continuous support of 5G test capabilities.

Further information about these can be found here: http://

www.rohde-schwarz.com/ad/press/5g

Tektronix Enhances Optical Modulation

Analyzer Software Enables Leading Edge

Coherent Research on Multi-Channel Optical

Transport Systems

Tektronix, a leading worldwide provider of measurement

solutions, today announced a series of enhancements to

its optical modulation analyzer (OMA) software. The latest

release provides optical research engineers with the ability

to evaluate multi-channel coherent modulation schemes

with confidence using a single measurement system.

Engineers can now calibrate and control multiple OMA’s to

easily acquire and analyze simultaneous data from multiple

channels such as different wavelengths or fiber cores.

“This release of our OMA software will improve the multi-

channel test experience for researchers developing

advanced coherent optical communication and networking

technologies such as QAM or DP-QPSK,” saidBrian Reich,

general manager, Performance Oscilloscopes, Tektronix.

“We are reducing the cost of setting up multiple OMA

systems and we’re reducing the time between receiving

multiple OMA hardware systems and getting calibrated,

synchronized data from those systems.”

New-Tech Magazine Europe l 79