digital beamforming (DBF); two-dimensional fast Fourier transform (2DFFT); FPGA implementation; testbed
Abstract :
[en] This paper presents a digital beamforming architecture based on the discrete Fourier transform, designed for medium-Earth orbit satellite payloads to serve multiple ground users. The system leverages a 16×16 16-point two-dimensional fast Fourier transform (2DFFT) to address the growing demand for high-speed data traffic and adaptable satellite communications. The architecture features a routing algorithm for flexible user allocation to any beam position and a cluster-based linear precoding approach to reduce resource and power consumption. Two versions of the 2DFFT module—quantized and non-quantized—are compared in terms of resource usage, power consumption, and performance. Experimental results show that the non-quantized version provides better power efficiency, while the quantized version removes the need for DSP blocks.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications
FNR16352790 - ARMMONY - Ground-based Distributed Beamforming Harmonization For The Integration Of Satellite And Terrestrial Networks., 2021 (01/06/2022-31/05/2025) - Juan Merlano Duncan
Name of the research project :
U-AGR-8065 - ESA-EGERTON - CHATZINOTAS Symeon
Funders :
ESA - European Space Agency
Funding text :
The EGERTON project is financially supported by the European Space Agency (ESA) in response to the call ESA AO/1-10190/20/UK/AB within the ARTES 4.0 CORE competitiveness generic programme line Component A:
Advanced Technology, Activity Reference 5C.413. This work was supported by SES S.A. and the Luxembourg National Research Fund (FNR), through the CORE Project ARMMONY, under Grant FNR16352790.
