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Post-docs

Current Postdocs:
Nils Pachler

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Nils Pachler

Nils Pachler is Visiting Scientist in the System Architecture Group, in the AeroAstro department at MIT. He has completed a PhD and MSc in Aeronautics and Astronautics at MIT, and a double BS degree in Informatics Technology and Aerospace Engineering under the CFIS (Interdisciplinary Higher Education Centre) program from Universitat Politècnica de Catalunya. Nils carried out his Doctoral, Masters, and Bachelor Thesis at MIT on dynamic allocation of resources in a multibeam satellite system.

Nils has previous research experience in the ARCO research group at UPC. This group is specialized in hardware accelerators and neural networks. Within this group, Nils tried to replicate the current state of the art in speech translation neural networks models. He has also previously worked at LudiumLab, a Spanish company for playing videogames on the cloud. Nils was the main responsible of the core product of the company, as well as one of the researchers of future improvements. He mainly worked in video and audio codification algorithms and hardware encoders. Recently, Nils has also been involved in Wise Systems Inc., a company specialized in logistics optimization for delivery services. Within this company, Nils helped move forward the development of the core product to achieve a higher performance. He is currently working for Rivada Space Networks as a Senior Simulation and Optimization Engineer.

Contact: pachler@mit.edu

[2024]	Mixed Integer Linear Programming for Ground Infrastructure and Inter-Satellite Link Design in Satellite Constellations (under review) (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Transactions on Vehicular Technology, 2024. () [bib]
[2024]	Robust Beam-to-Satellite Routing Strategies for Megaconstellations (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Wireless Communications Letters, 2024. () [bib]
[2024]	Flooding the Market: Comparing the Performance of Nine Broadband Megaconstellations (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Wireless Communications Letters, 2024. () [bib]
[2024]	Avoiding Self-Interference in Megaconstellations through Cooperative Satellite Routing and Frequency Assignment (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In Journal on Selected Areas in Communications, 2024. () [bib]
[2024]	A Unified Resource Allocation Framework and Impact Evaluation for NGSO satellite constellations (under review) (Nils Pachler, Juan Jose Garau Luis, Edward F. Crawley, Bruce G. Cameron), In Acta Astronautica, 2024. [bib]
[2024]	A scalable algorithm for User Grouping in LEO-MEO-HEO Hybrid Very High Throughput Satellite Constellations (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Transactions on Cognitive Communications and Networking, volume 10, 2024. () [bib]
[2022]	Frequency Plan Design for Multibeam Satellite Constellations Using Linear Programming (Juan Jose Garau Luis, Sergi Aliaga, Guillem Casadesus, Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Transactions on Wireless Communications, 2022. () [bib]
[2020]	Static beam placement and frequency plan algorithms for LEO constellations (Nils Pachler, Markus Guerster, Inigo del Portillo, Edward F. Crawley, Bruce G. Cameron), In International Journal of Satellite Communications and Networking, 2020. () [bib]

[2024]	Satellite Routing for mobile users under uncertainty in High Throughput constellations (Joel Jurado Diaz, Nils Pachler, Juan Jose Garau Luis, Edward F. Crawley, Bruce G. Cameron), In IEEE Aerospace Conference, 2024. () [bib]
[2022]	Beam-to-Satellite Scheduling for High Throughput Satellite Constellations Using Particle Swarm Optimization (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Aerospace Conference, 2022. () [bib]
[2022]	Towards Autonomous Satellite Communications: An AI-based Framework to Address System-level Challenges (Juan Jose Garau Luis, Skylar Eiskowitz, Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In International Astronautical Congress, 2022. () [bib]
[2022]	Towards Autonomous Satellite Communications: An AI-based Framework to Address System-level Challenges (Juan Jose Garau Luis, Skylar Eiskowitz, Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In AI to Accelerate Science and Engineering Workshop at AAAI Conference on Artificial Intelligence 2022, 2022. () [bib]
[2022]	Dynamic Frequency Assignment for Mobile Users in Multibeam Satellite Constellations (Guillem Casadesus, Juan Jose Garau Luis, Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In International Astronautical Congress, 2022. () [bib]
[2021]	A Genetic Algorithm for Beam Placement in High-Throughput Satellite Constellations (Nils Pachler, Edward F. Crawley, Bruce G. Cameron), In IEEE Cognitive Communications for Aerospace Applications Workshop, 2021. () [bib]
[2021]	An Updated Comparison of Four Low Earth Orbit Satellite Constellation Systems to Provide Global Broadband (Nils Pachler, Inigo del Portillo, Edward F. Crawley, Bruce G. Cameron), In IEEE International Workshop on Satellite Mega-Constellations in the 6G Era, 2021. () [bib]
[2020]	Allocating Power and Bandwidth in Multibeam Satellite Systems using Particle Swarm Optimization (Nils Pachler, Juan Jose Garau Luis, Markus Guerster, Edward F. Crawley, Bruce G. Cameron), In 2020 IEEE Aerospace Conference, 2020. () [bib]
[2020]	Artificial Intelligence Algorithms for Power Allocation in High Throughput Satellites: A Comparison (Juan Jose Garau Luis, Nils Pachler, Markus Guerster, Inigo del Portillo, Edward F. Crawley, Bruce G. Cameron), In 2020 IEEE Aerospace Conference, 2020. () [bib]

[2024]	Optimizing resource allocation in large communications satellite constellations (Nils Pachler de la Osa), PhD thesis, Massachusetts Institute of Technology Dept. of Aeronautics and Astronautics, 2024. () [bib]
[2022]	A complete resource allocation framework for flexible high throughput satellite constellations (Nils Pachler), Master's thesis, Massachusetts Institute of Technology Department of Aeronautics and Astronautics, 2022. () [bib]
[2019]	Power and Bandwidth allocation for High-Throughput Satellites using Particle Swarm Optimization (Nils Pachler), Master's thesis, UPC BarcelonaTech, Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2019. () [bib]