Channel simulators combine receiver and signal source technology to create powerful radio-channel simulators which can quickly and dynamically change parameters such as delay, fading, phase noise and filter effects.
PPM Systems offers a range of products for satellite channel emulation, including the C5040 for simulating complete bidirectional satellite transmission links in LEO/MEO satellite constellations, as well as the C7000 RF MIMO Emulator for Mobile ad-hoc networks (MANET) and 5G testing.
C3040 Satellite Link Simulator
The IZT C3040 offers a higher instantaneous bandwidth of 100 MHz, more flexibility in terms of RF modules and an enhanced feature set. The available features are grouped into uplink, payload and downlink effects. Some features are available twice to reproduce a realistic transmission chain.
Effects of the uplink include:
- Delay and delay change over time
- Doppler simulation
- Effects of the ionosphere
- Interference by other signals.
Within the payload of the satellite the following effects are introduced:
- IMUX filtering
- Nonlinearity (AM/AM and AM/PM) caused by the amplifier
- Phase noise
- OMUX filtering.
On the downlink, from the satellite to the terminal the signal then changes by:
- Effects of the ionosphere
- Large and small scale fading
- Interference by other signals
- Thermal noise.
C5040 Satellite Channel Simulator
The C5040’s optimised and scalable signal processing units offer real-time simulation of influences on the signal at the satellite (non-linearity, IMUX / OMUX filter, phase noise, interference, antenna gain, Doppler shift) as well as on the transmission link (interference, rain fading, scintillation, reflections, thermal noise). It can simulate complex operating scenarios for testing modems and transceivers, or receive only systems, and has a frequency range up to 3 GHz with a bandwidth of 250 MHz.
Ideal for simulation of Low Earth Orbit (LEO) and Medium Earth Orbit (MEO) satellite constellations, the IZT C5040 can conduct complex simulations involving complex handovers with variable path lengths and losses to the ground stations. The system has been designed to be to be driven using real constellation data or an external orbit simulator.
C6000 Bi-directional Link Simulator
The IZT C6000 Satellite Link Emulator provides a cost effective and time-saving solution for testing the complete bi-directional transmission path. The state of the art Graphical User Interface (GUI) allows the user to change all parameters of the setup easily.
- Bi-directional wideband solutions for up to 600 MHz
- Reproducible and complex scenarios
- Real time change of parameters
- Flexible and scalable architecture
- State of the art GUI
- Long term support.
The IZT C6000 is a highly optimised and scalable signal processing unit which offers real time simulation of effects on the signal at the satellite (non-linearity, IMUX- OMUX filter, phase noise, interference, antenna gain, Doppler shift), as well as on the transmission link (ionosphere effects, interference, rain fading, scintillation, thermal noise).
By using the emulator, satellite based communication systems can be extensively simulated and tested prior to completion. In addition, complex operational scenarios for equipment (receivers, transmitters, satellite phones) and satellite testing can be achieved in a very cost effective way.
C7000 RF MIMO Simulator
The IZT C7000 is suitable for next generation Mobile ad-hoc networks (MANET) and Mesh Radio Testing for communication network applications such as Multi-Mode Radio (MMR), as used in Battlefield and Tactical Communications & Information Systems (BATCIS). The C7000 can also be set up as an Over The Air (OTA) test system with a scalable number of channels.
Other applications include simulating complex receiver scenarios, such as those involved in 5G mobile vehicle reception and GNSS/GPS receiver testing.