The GEDOMIS® testbed is an ideal platform to develop, test and validate the PHY-layer of modern wireless communication systems covering the prototyping and verification requirements of advanced solutions that target base stations, smart antennas, MIMO systems, Software-Defined Radio (SDR), geolocation, cognitive radio and high-speed test and measurement campaigns. In the past it has been used to develop and test real-time systems based on the IEEE 802.11, IEEE 802.16 and 3GPP rel. 9 standards. GEDOMIS® is able to host PHY-layer prototypes of multi BSs and multi User Equipments (UEs).
- Some of the supported PHY-layer development scenarios:
- Schematic diagram of the GEDOMIS® testbed for a typical scenario:
- Main specifications of the hardware equipment and boards comprising the testbed:
- GEDOMIS® can be used to develop:
- Offline testbeds which typically combine Matlab simulations at the two baseband ends -transmitter and receiver- with instrumentation for the signal conversion (DACs, RF up-conversion, channel emulator or antennas, RF downconversion, ADCs). Offline testbeds are typically used to evaluate quasi-static channels.
- Real-time testbeds which feature an end-to-end full real-time operation able to validate realistic mobility and fast fading channel conditions.
- GEDOMIS® can help you to:
- Validate multi-band multi-antenna systems
- Test state-of-the-art PHY-layer signal processing techniques
- Implement wideband real-time communication systems
- Design, implement and test cognitive radio applications
- Provide a real-life testbed to evaluate RF & antenna designs
- Emulate mobile channels prior to field measurements
- Relevant project developments and funding
GEDOMIS® has been used in the past in numerous occasions to implement, test and validate the PHY-layer of various wireless communication systems. The implemented R&D projects were funded either through public competitive calls (at regional, national or European-level) or from direct contract with industrial players. It is worth to lay particular emphasis on two of them, due to their demanding and challenging development and verification cycle. Likewise it is demonstrated the upper bounds capabilities of the use-cases that can be implemented and tested in GEDOMIS®.
- An important system developed in GEDOMIS® was part of the BuNGee project, funded by the EC (FP7, ICT call 4, STREP, finished September 2012); the result of this project was a real-time FPGA-based implementation of the PHY-layer of a MIMO closed-loop wireless communication system based on the IEEE 802.16e standard. The system featured a wide signal bandwidth and a sophisticated RTL design that accommodated concurrently two transmission schemes, two symbol permutations and adaptive subcarrier allocation and transmit antenna selection, according to timely-generated and transmitted CSI feedback.
- Another important system developed in GEDOMIS® was part of the BeFemto project, funded by the EC (FP7, ICT call 4, IP, finished September 2012); the result of this project was a real-time FPGA-based implementation of the PHY-layer of an LTE-like system featuring interference management. In more details, the primary DL communication of a Macro BS and a Macro UE is interfered by a secondary DL communication between a Femto BS with a Femto user, because both DL signals have the same BW and use the same RF band. The interference was mitigated to protect the QoS of the primary DL communication.
GEDOMIS® is currently used in the following projects:
In the past, GEDOMIS® was used in the following projects:
- Additional content
Promotional Video (July 2010):
MIMO 2×2 Mobile WiMAX setup with Emulated TX and real-time FPGA RX
- Team members:
- Nikolaos Bartzoudis, Senior Researcher, PHYCOM Department Head
- Role: Testbed coordinator, System engineering, VHDL programming, code-integration & implementation, system debugging
- Oriol Font-Bach, Researcher
- Role: System design, principal VHDL programmer, Matlab modeling, PHY layer algorithm implementation, system debugging
- Pepe Rubio, Senior Researcher
- Role: VHDL and C programming for FPGAs and DSP uPs respectively, Matlab modeling, PHY layer algorithm implementation
- David López, Researcher
- Role: RF system architecture and design, T&M engineering, system debugging
- Miquel Payaró, Senior Researcher, Communication Technologies Division Head
- Role: Advisor in signal processing theory, Matlab modeling, PHY layer algorithms
- Affiliate member:
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