Search Results for author: Juan Carlos Merlano Duncan

Found 6 papers, 0 papers with code

Satellite Swarms for Narrow Beamwidth Applications

no code implementations21 Nov 2023 Juan A. Vásquez-Peralvo, Juan Carlos Merlano Duncan, Geoffrey Eappen, Symeon Chatzinotas

Satellite swarms have recently gained attention in the space industry due to their ability to provide extremely narrow beamwidths at a lower cost than single satellite systems.

Harnessing the Power of Swarm Satellite Networks with Wideband Distributed Beamforming

no code implementations10 Jul 2023 Juan Carlos Merlano Duncan, Vu Nguyen Ha, Jevgenij Krivochiza, Rakesh Palisetty, Geoffrey Eappen, Juan Andres Vasquez, Wallace Alves Martins, Symeon Chatzinotas, Björn Ottersten

The space communications industry is challenged to develop a technology that can deliver broadband services to user terminals equipped with miniature antennas, such as handheld devices.

Energy-Efficient Precoding and Feeder-Link-Beam Matching Design for Bent-Pipe SATCOM Systems

no code implementations26 Apr 2023 Vu Nguyen Ha, Juan Carlos Merlano Duncan, Eva Lagunas, Jorge Querol, Symeon Chatzinotas

This paper proposes a joint optimization framework for energy-efficient linear precoding and feeder-link-beam matching design in a multi-gateway multi-beam bent-pipe satellite communication system.

GEO Payload Power Minimization: Joint Precoding and Beam Hopping Design

no code implementations22 Aug 2022 Vu Nguyen Ha, Ti Ti Nguyen, Eva Lagunas, Juan Carlos Merlano Duncan, Symeon Chatzinotas

Regarding constraint on the maximum number of illuminated beams per time slot, the technical requirement is formulated as a sparse optimization problem in which the hardware-related beam illumination energy is modeled in a sparsity form of the LP vectors.

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