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Objectives
The objective of this project is to develop and verify a high-end Digital Modem SDR Platform with 100 Gbps RF over IP interface. While the Digital Modem is a generic SDR platform, the application demonstrated on the platform in this project is a high-speed DVB-S2X modem supporting baud rates up to 1.0 Gbaud and user data rates up to 4.3 Gbit/s.
Challenges
The key challenges of the project are:
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High RF bandwidth requires large bandwidth on the digital fibre link (e.g. 1.25 x oversampling of a 1.1 GHz signal bandwidth requires 27.5 Gbit/s when transmitting 10 bits complex data)
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User data rates of up to 4.3 Gbit/s (DVB-S2X with 32 APSK x 1.0 Gbaud) require high processing bandwidth.
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SW framework for COTS FPGA acceleration modules
System Architecture
The block diagram below shows an example VSAT system using RF-over-IP on the Teleport.
The key components in the digital modem are the DVB-S2X demodulator and FEC decoder and DVB-S2X transmitter, in addition to the VITA49.2 and 100G ethernet interface as indicated in the block diagram below. Optionally, the digital modem may support compression and decompression logic to minimize the data rate between the RF-over-IP device and the digital modem. The DVB-S2X components are re-used from previous ARTES activities.
The HW platform is a COTS server equipped with a COTS FPGA acceleration module.
Plan
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Kick off meeting (KO): November 2022
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Mid-Term Review (MTR): January 2024
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Final Review (FR): December 2024
Current Status
The project is completed.
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