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PROPSIM SATCOM Channel Emulation SolutionPoint-to-Point to Multilink Mesh Satellite Systems Testing
Up to now, satellite systems have been a highly specialized communication
channel with systems tailored for a specific purpose. 5G non-terrestrial networks
(NTN) plan to support cellular and broadband internet connections by providing
a robust secondary link for routing data. Specialized satellite communications
(SATCOM) applications such as global navigation systems or terrain imaging will
not disappear. But the need for high throughput in cellular networks and mobile
broadband dominates future investments in satellite systems.
The Keysight PROPSIM FS16 and F64 hardware platforms are widely adopted
for wireless radio testing by both device and network vendors. The PROPSIM
SATCOM Channel Emulation Solution forms a baseline for building the most
demanding satellite test beds by leveraging these platforms with other compatible
Keysight test and measurement solutions.
The Keysight PROPSIM SATCOM Channel Emulation Solution offers the most accurate signal fading processing in terms of delay, phase, and amplitude. It features an easy-to-use and configure user interface with powerful options:
• built-in input power measurement
• automated phase and amplitude calibration without the need for a vector network analyzer
S O L U T I O N B R I E F
Keysight Technologies’ new high-capacity PROPSIM SATCOM Channel Emulation Solution is the answer to
today’s satellite testing challenges.
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The PROPSIM SATCOM Channel Emulation Solution elevates traditional satellite link
testing to new and upcoming multilink high-frequency band satellite systems. The
solution enables multi-satellite radio constellation testing with real hardware in controlled
laboratory conditions. New satellite systems are progressing to multi-satellite and
multilink transmission. This type of transmission puts pressure on testing solutions to
perform end-to-end testing before launching the satellite in space or uploading and
activating new software.
Satellite Communication Testing ChallengesTesting single-link satellite channels can be challenging. The link conditions between the
radio on the ground and the satellite consist of hundreds or thousands of kilometers of
atmosphere and space.
Ionospheric effects, together with attenuation from clouds and weather conditions, set
the requirements for radios and antenna design. Also, the ground station surroundings
bring signal reflections and various interference issues.
Guaranteeing the quality of service for the end user requires careful total link budget
planning (Figure 1).
Link budget
Transmitter Receiver
Weather Clouds IonosphereFree space
Figure 1. Link budget from ground to ground using bent pipe satellite link
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PROPSIM RF Channel Emulator-Based Satellite Testing Solutions
Figure 3. Keysight F8800A PROPSIM F64
Channel Emulator with support up to 64 radios
A highly scalable and flexible solution that supports:
• testing from 2 to 64 radios
• support for single-input single-output (SISO) and multiple-input multiple-output (MIMO) in mesh network topologies for high test coverage in the lab
• configurable signal bandwidth starting from 40 MHz – supports up to 1.2 GHz
• modeling tool for aerospace with open file interfaces to enable the creation of advanced satellite test scenarios with third-party software simulation tools
High-performing, network-level channel emulation solution to easily replicate field conditions in a repeatable way:
• scales from single-link testing to whole network testing
• standard and waveform agnostic to guarantee operation with all proprietary systems
• single-antenna to high-order MIMO antenna modeling
Advanced radio channel modeling for:
• dynamic mesh with multipath links
• control of Doppler, delay, and phase
• create test scenarios with advanced tools
Figure 2. Keysight F8820 PROPSIM FS16
Channel Emulator with support up to 16 radios
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Highly Scalable and Flexible RF Channel EmulationFlexible use of frequency bands and signal bandwidth
PROPSIM Channel Emulators provide continuous frequency support from 3 MHz to
6 GHz in the base box. There is no need for external equipment in this frequency
range. The device under test can plug into PROPSIM using direct cabling. When
extending to C- and X-band frequencies, PROPSIM integrates with the Keysight
E7770A Common Interface Unit (CIU), which expands the frequency range to 12 GHz.
The Keysight M1740A Remote Radio Head (RRH) provides supports for the Ka-band
by covering the 24 to 44 GHz frequency range (Figure 4).
Full Control of Radio Test Conditions
PROPSIM SATCOM Channel Emulators are compatible with all wireless links and system
parameters. You can test radios with all forms of arbitrary waveforms. The standard
independent file-based emulation engine guarantees operation with proprietary radio
systems. This also means you have full control of the radio conditions. All parameters
are tunable, and radio conditions can even surpass real-life physics to explore the true
performance of the system.
Figure 4. PROPSIM SATCOM hardware options for end-to-end satellite testing
Keysight M1740ARRH
Keysight E7770ACIU
Keysight F8820AFS16
Keysight F8800AF64
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Accurate File-Based Channel Modeling Technology
PROPSIM SATCOM Channel Emulators use Keysight’s file-based
channel emulation technology. File-based channel emulation guarantees
exact radio channel conditions between repetitive test runs. It also enables
importing Keysight scenario-based simulation data, third-party simulation
software data, or your proprietary data. The test scenarios can include
dynamic conditions. The solution provides enough capacity to model system-
level operations for multiple ground radios and multiple satellites. Modeling
antenna configurations can be a part of the emulation, including multi-antenna
transmission and beamforming.
Powerful fading processing combined with open file interfaces enables the use of any
scenario editing tool as the source of the channel emulation testing process. You can
also use tools and engineering environments with libraries for creating orbit data to
model the ionosphere. These capabilities enable you to create realistic test conditions
and scenarios for testing satellite radio hardware and software before launching
satellites into orbit.
Easy Operation and Industry-Leading Channel Emulation RF Performance
PROPSIM SATCOM Channel Emulators offer complete capabilities for satellite testing
with real radio hardware and RF equipment. Hardware and radio equipment prototypes
are subject to real-world link and radio conditions in a controlled laboratory environment.
Connectivity and clean channel testing enable the verification of basic operations. The
built-in scenario creation wizard makes it easy to increase the level of challenge for the
communication link by adding multipath fading and other radio channel impairments.
For analysis of the system under test, the performance and accuracy requirements of
the test platform need to exceed the most demanding specifications of modern radio
equipment. The PROPSIM Channel Emulation Solution provides industry-leading RF
performance, exceptionally low phase noise, and error vector magnitude (EVM < –50dB)
better than any channel emulator in the market.
The PROPSIM SATCOM Channel Emulation Solution is ideal for arbitrary radio network
testing and covers all standard and non-standard wireless technology testing needs.
Page 6This information is subject to change without notice. © Keysight Technologies, 2020, Published in USA, March 5, 2020, 7120-1034.EN
Find us at www.keysight.com
Learn more at: www.keysight.com
For more information on Keysight Technologies’ products, applications or services,
please contact your local Keysight office. The complete list is available at:
www.keysight.com/find/contactus
5G SolutionsKeysight’s industry-first 5G end-to-end design and test solutions enable the mobile
industry to accelerate 5G product design development. Our solutions encompass the
physical layer to the application layer and the entire workflow from simulation, design,
and verification to manufacturing, deployment, and optimization.
Keysight offers common software and hardware platforms compliant to the latest
3rd Generation Partnership Project (3GPP) standard. You can quickly and accurately
validate 5G chipsets, devices, base stations, and networks, as well as emulate
subscriber behavior. To learn more about Keysight’s 5G solutions, please visit
www.keysight.com/find/5G.
To learn more about our solutions, please visit:
• PROPSIM FS16 and PROPSIM F64: www.keysight.com/find/PROPSIM
• Keysight PathWave: www.keysight.com/find/pathwave
• Keysight M1740A mmWave Transceiver for 5G: www.keysight.com/find/m1740a
• Keysight E7770A Common Interface Unit: www.keysight.com/find/e7770a
Keysight’s 5G Network Emulation Solutions leverage the Keysight E7515B UXM 5G
Wireless Test Platform and includes the following:
• 5G Protocol R&D Toolset: www.keysight.com/find/5g-protocol
• 5G Protocol Conformance Toolset: www.keysight.com/find/5g-protocol-conformance
• 5G RF / RRM DVT & Conformance Toolset: www.keysight.com/find/5g-rf-conformance