SCSS Invited Talks

SCSS Invited Talks
October 20th (Thursday), 2022

Invited Talk I : Melding Satellite and Intelligent Edge with Radio Access Networks to Address the
Digital Divide

Brian Holz, CEO, Mangata Networks

Mangata Networks is integrating a digital satellite constellation with intelligent edge to bring connectivity to unconnected and
underconnected communities around the globe. The network uses digital signal processing, electronic beam forming, edge compute and 5G/6G radio access networks to bring leading edge capability directly into under connected communities. There is knowledge everywhere, lets bring all into the digital age.


CEO Mangata Networks: Brian has 35 years of progressive space system engineering, program management,
and executive leadership experience. He has provided executive leadership of large multi-discipline teams
developing complex commercial and government space systems using state of the art technology. He has
experience working with large investors, raising equity, and supporting multi-faceted Boards. He has built
two startup companies from the ground up including being the first employee of O3b Networks and its CTO
responsible for delivering all of its technical systems through start of service. He also helped OneWeb raise its
initial capital and was the first CEO of OneWeb Satellites for its first two years setting up the joint venture with Airbus Defense and Space and its operations in both the US and France. Brian has a B.S in Aerospace and Ocean Engineering where he serves today on the departments advisory board. He also has an M.S in Space Systems Engineering from George Washington University.

Invited Talk II : LEO Constellation Direct to Cell Phones “the dream becomes true”

Dr. Thierry Abraham, Chief Strategy Officer, SatixFy

Direct to Cell phone LEO constellation is not a dream anymore and the race is on. Several announcements were released recently such as SpaceX partnering with T-Mobile to provide basic text service across parts of the U.S., and Thales, Ericsson and Qualcomm teaming-up to develop 5G non-terrestrial networks using low-Earth orbit (“LEO”) satellites. While these offerings provide basic direct-to-cell satellite service for text messaging services, full-scale voice and data services desired by consumers will require the use of advanced chip technologies to address current limitations such as multi-beam digital Beam-forming and On-Board-Processing technology. The presentation summarizes what is required to enable higher data-rate Direct-To-Cell services via satellite, when it can be deployed and how SatixFy is poised to Enable Direct-to-Cell 5G Non-Terrestrial Networks.


Graduated from ESEO, (High Engineer School in Electronic and Software, in France). He has previously been working for ST Microelectronics as System Business Unit Director and STB Application Lab Manager.
He started his working career with Thomson RND in Germany. CTO, at FTA communication Technologies, developing Set-Top-Box and LNB consumer products, he took a role as CTO at Skyware Technologies, designing VSAT broadband terminals. He is now working for SatixFy as Chief Strategy Officer – Strong engineering, system skills, and business acumen background promoting Electronically Steerable Multi-Beam antenna, Ground and Satellite payload equipment based on SDR ASICs.

Invited Talk III : 6G Satellite Communications

Dr. Barry Evans, Professor, University of Surrey

Currently satellites are being studied in standards bodies for integration into 5G networks. Several demonstrations have been made and an NTN standard for New Radio (NR) and narrow band IoT is approaching completion. Already research has commenced on 6G in which satellites will be an integral component in what we term a unified approach. This paper outlines some of the current work in the satellite integration phase in 5G as a precursor to the 6G standardization which will commence in 2025. The paper outlines the vision for 6G and brings out some key areas that satellite will play a part in. It outlines some of the key research challenges ahead for satellites if they are to achieve a unified 6G network with terrestrial networks.


Barry Evans has a long career in satellite communications and currently heads the satellite communications
area in the Institute for Communications Systems and 6GIC at the University of Surrey. He has participated
in many EU and ESA satellite projects over the years and has made significant contributions to constellation
design, radio propagation and antennas as well as signal processing, and networking areas for new satellite
systems. He is a Fellow of the Royal Academy of Engineering in the UK and is chief Editor of the Journal for
Satellite communications and networking.

Invited Talk IV : Antenna Tech. for LEO Satellite

Dr. Louis Hildebrand, Director of New Business Capture, MDA, Quebec, Canada

MDA is a leading international provider of antenna products to Commercial, New Space, Government and Institutional markets.
Leveraging more than six decades of successful space-flight heritage, MDA has established itself as a leading provider of nongeostationary antenna products through technological innovation and investment in high-volume production facilities and capabilities. This competitive advantage has enabled MDA to be part of commercial flagship LEO/MEO constellation programs such as O3b, Iridium-Next, OneWeb, Globalstar-Gen2, World-view Legion, the US Space Development Agency’s Transport and Tracking constellations as well as providing antenna technology to the International Space Station. MDA has also been a supplier of antenna technologies to several LEO Earth-observation missions such as Canada’s Radarsat missions and the EU’s Copernicus missions.
Finally, having invested in advanced manufacturing, MDA is able to provide heretofore unheard-of delivery schedules in support of BIU and constellation pilot missions. This presentation provides an overview of MDA’s heritage and products.

Dr. Hildebrand is a satellite industry leader with extensive experience in business development, new business
capture, product development, marketing and communications. Proven track record of driving strategic business
growth, increasing addressable product markets and expanding customer bases. Currently Director of New
Business Capture at MDA’s Space Systems Group in Montreal Canada. Familiar with business developments
and trends in the satellite industry with more than 25 years experience in the industry.

Invited Talk V : 6G LEO satellite projects in Korea

Dr. Woo-Jin Byun, PM, IITP

Currently, Space X and OneWeb are manufacturing and launching low earth orbit swarm satellites to realize global
connectivity. In addition, Apple installed Global Star’s low-orbit communication satellite modem in the latest
iPhone 14 to provide emergency message service. In addition, T-Mobile announced a plan to provide satellite
communication services using low earth orbit cluster communication satellites in collaboration with Space X.
The Ministry of Science and ICT is investing in R&D in the satellite communication field to revitalize the domestic satellite
communication industry. In this presentation, we would like to introduce the current status of R&D projects being carried out by the Ministry of Science and ICT, as well as mega project to develop 6G satellite communication technology and other business plans to enhance the technological competitiveness of low earth orbit communication satellites and create new services.

He received Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and
Technology, (KAIST) Daejeon, Korea, in 2000. In 1999, he joined Samsung Electro-Mechanics Company, Suwon,
Korea, where he developed mobile communication devices such as power amplifiers and radio modules
from 1999 to 2004. Since 2004, he has been a member of researchers in ETRI. He has received best paper
award at ETRI Journal, best researcher from KIEES and certificate of the Minister of Science and ICT (Korea
Government). He serves as a member of Editorial Committee at ETRI Journal. He was with the ATHENA group
at Georgia Institute of Technology as a visiting scholar from 2015 to 2016. He served as Assistant Vice President for Radio Satellite
Research Division at ETRI from 2019 to 2021. He is currently serving as Broadcasting, Radio and Satellite PM(Program Manager) for
the Ministry of Science and ICT at IITP.

Invited Talk VI : High Throughput Satellites: Issues in Comparing Capacities

Dr. Alban Duverdier, Deputy Scientific Director, MESR

Since the early 2000s, satellite telecommunications have evolved significantly with the deployment of high throughput satellite systems offering Terabps capacity. Most often, operators and analysts evaluate this system capacity adding the forward and return data rates, obtained by multiplying the number of satellites by the available bandwidth, the frequency reuse factor and a typical spectral efficiency for each link. After presenting this first level solution, the paper proposes a methodology to evaluate HTS system capacity in three steps: IP throughput from link budget analysis, capacity obtained at the satellite level, influence of system configurations (users, gateways, services).

Alban Duverdier joined CNES in 1998. He is seconded to Ministry of Higher Education and Research as deputy scientific director for “mathematics, physics, ICT, nanoscience” since 2020 and was deputy head for “space policy and defense” from 2018 to 2020. Previously, he managed at CNES successively R&D studies in telecommunications and international affairs. He is engineer in electronic, doctor in signal processing, accreditated to supervise research and part-time lecturer in space telecommunications at Telecom Paris since 2002.

Invited Talk VII : Quality of Satellite Communication Signals Related to Problems in RF Components
as Hardware

Dr. Sungtek Kahng, Professor, Incheon National University

As the generation of mobile communication develops as is slated to be hooked up to satellite communication, the importance of digital or software is highlighted more and more as a fad that the notion of SDR will work things out. Communication is a product of impartially integrating the fields of software and hardware. In order to stop the waste of time in finding causes of failure in communication by scrutinizing the software of a system, this paper as a problem diagnosis report shares an idea that problems in the hardware of the system end up with malfunctions in satellite communication. Since the portals of the satellite wireless payload are taken up by the antenna and the filter, which account for forming the wireless link, the consequences of problematic RF components are investigated. Physical errors in the components are brought up to demonstrate a functional degradation like weakened signals.

Sungtek Kahng received the Ph.D. degree in electronics and communication engineering from Hanyang
University, Seoul, Korea, in 2000, with a specialty in radio science and engineering. From 2000 to early 2004,
he worked for the Electronics and Telecommunications Research Institute on numerical electromagnetic
characterization and developed radio frequency passive components and antenna systems for satellites. In
March 2004, he joined the Department of Information and Telecommunication Engineering. Incheon National
University, Incheon, Korea, where he has continued research on analysis and advanced design methods
of microwave components and antennas, including metamaterial technologies, multiple-input-multiple-output communication, and wireless power transfer for Internet of Energy/cyberphysical systems. He is also a consultant and a collaborator for wireless communication industry. Dr. Kahng is the Secretary of the IEEE Antennas and Propagation Society (APS) Korea Chapter and the Korean Institute of Electromagnetic Engineering and Science Antennas and Propagation Technical Group. He was the General Secretary for the Korea-Japan Joint Conference on AP/EMT/EMC 2009, the Korea-Japan Microwave Workshop 2009 and 2014, GSMM 2010, APEMC 2011, and ISAP 2011 and a Judge for the Student Paper Competition at IEEE APS 2011, 2012, and 2014.

Invited Talk VIII : 3GPP NTN Standardzation

Dr. Nicloas Chuberre, TAS

The integration of NTN into terrestrial cellular networks is another important enabler in achieving truly global coverage, since it facilitates seamless roaming between cellular and non-terrestrial networks with a single device. This presentation aims to bring together researchers of relevant fields, to discuss the latest results and progress of NTN from different perspectives (academia,industry, operators, and regulatory authorities). These discussions will inspire the evolution of NTN toward 6G.


Nicolas CHUBERRE graduated from “Ecole Supérieure d’Ingénieur en Electronique et Electrotechnique”
in Paris in 1988. Previously with Nokia & Alcatel Mobile phones to design signal processing algorithms,
Medium Access Control protocols and integration test tools for 2G cellular handsets & systems, he joined
Thales Alenia Space to manage the development of satellite payload equipment and the design of advanced
Satellite Communication Systems (GEO and Non GEO). He has successfully initiated and led several European
collaborative research projects in FP6, FP7, H2020 as well as ESA ARTES context. He has been chairing the
SatCom Working Group of Networld2020 technology platforms ( during 9 years and as such was member of the partnership board of the 5G Infrastructure Association ( Nicolas has published several papers on innovative Satellite System concepts. Currently he is defining and developing Satellite Solutions for 5G. In addition, he is the lead representative of Thales in 3GPP TSG RAN where he is the rapporteur of the standardisation on satellite in 5G. He also chairs since 2006 the Satellite Communication and Navigation working group at ETSI (

Invited Talk IX : R&D for Satellite Communications and Non-terrestrial Networks toward Beyond-
5G in Japan

Dr. Hiroyuki Tsuji, Director, Space Communication Systems Laboratory, National Institute of Information and Communications

At present, discussions on information and communication technologies for Beyond-5G/ 6G are accelerating. In the field of space communications, satellite communications are becoming more advanced and active, and it is expected that an advanced information and communication network will be realized that links the earth and space with satellites. In the Beyond 5G/6G era, spatial network expansion is required, and advanced communication with mobile devices called non-terrestrial networks will become important.
This paper describes the efforts and the status of R&D regarding the developments of satellite communications and non-terrestrial networks (NTN) toward Beyond-5G/6G in Japan.


Hiroyuki Tsuji received B.E., M.E., and D.E. degrees in Electrical Engineering from Keio University, Tokyo,
Japan, in 1987, 1989, and 1992, respectively. In 1992, he joined the Communications Research Laboratory
(CRL, now part of the National Institute of Information and Communications Technology, or NICT). From 1999
to 2000, he was a visiting research fellow of the University of Minnesota. From 2002 to 2021, he was working
at Yokohama National University, Yokohama, Japan as a visiting professor, which was an additional post.
His research interests are array antennas for wireless communications, unmanned aircraft communication
systems, and other satellite communication systems. He is now the Director of the Space Communication Systems Laboratory of Wireless Networks Research Center in NICT, since April 2021.