IEICE Technical Report

Online edition: ISSN 2432-6380

Satellite Telecommunications

Workshop Date : 2025-08-28 - 2025-08-29 / Issue Date : 2025-08-21

SAT2025-38
Development of Satellite User Earth Station for disaster recovery operation
Mitsuru Nishino, Junichi Abe, Kiyohiko Itokawa, Nana Hasegawa, Tomohiro Tokuyasu, Fumihiro Yamashita (NTT)
pp. 1 - 5

SAT2025-39
[Invited Talk] R&D on NTN toward Beyond 5G/6G and Activity of XGMF NTN Promotion Project in XGMF
Morio Toyoshima (NICT)
p. 6

SAT2025-40
[Invited Talk] Overview and Development Trends of Optical Satellite Communications Technology
Hiroaki Miyoshi (NEC)
p. 7

SAT2025-41
[Invited Talk] Demonstration of Formation Flying Technology Using CubeSat MAGNARO-II and Its Application to Space Communication
Takaya Inamori (Nagoya Univ.)
p. 8

SAT2025-42
Optimization of Sum-Product Decoding Iterations for LDPC Coding in OFDM Spectrum Suppressed Transmission
Tatsuya Tanaka, Takatoshi Sugiyama (Kogakuin Univ.)
pp. 9 - 13

SAT2025-43
Superposed Transmission Scheme in High-Speed OFDM Signal and Low-Speed CDMA Signal Based on 5G Parameters
Sana Kagaya, Takatoshi Sugiyama (Kogakuin Univ.)
pp. 14 - 18

SAT2025-44
[Encouragement Talk] Evaluation of Effect of R0.01 Estimation Errors Based on ITU-R Model on Rain Attenuation CDF Estimation
Takumi Iwamoto (SKY Perfect JSAT)
pp. 19 - 24

SAT2025-45
[Encouragement Talk] Development of functional expansion for TT&C transponder for satellite
Shunsuke Okada, Tomomi Kouzu, Yuzo Hayashi, Masaki Hiruta (NEC Space Technologies)
pp. 25 - 29

SAT2025-46
[Encouragement Talk] Image Enhancement 1-bit DAC of Direct Digital RF Transmitter for Q-Band DBF Array Antenna
Yuki Fujiya, Tori Inoue, Koki Furuuchi, Junhao Zhang, Tomoyuki Furuichi, Satoshi Tsukamoto, Noriharu Suematsu (Tohoku Univ.)
pp. 30 - 35

SAT2025-47
[Invited Lecture] Early Commercialization and System Evolution for HAPS Direct-to-Mobile-Phone Service -- An Integrated Approach to Field Trials in Kenya and System Advancement through Device Development and Simulation --
Yuto Muroki, Yoshihisa Kishiyama, Sunao Toya, Takuya Miyashita, Takuya Shibasaki (Space Compass)
p. 36

SAT2025-48
[Invited Lecture] R&D on High-Capacity and Frequency Sharing Technologies for HAPS Service Link
Kenji Hoshino, Kouji Tashiro, Koichi Maki, Tsutomu Ishikawa, Wataru Takabatake (SoftBank Corp.)
p. 37

SAT2025-49
Massive GW Satellite MIMO Using Array Type Gateway Antennas
Koyo Tategami, Daisuke Goto, Kiyohiko Itokawa, Tomohiro Tokuyasu, Fumihiro Yamashita (NTT)
pp. 38 - 43

SAT2025-50
Multi-Beam Scheduling for Uplink and Downlink to Reduce Latency in Data Relay Satellite
Kohei Yoshida, Yohei Hasegawa, Kazushi Sugyo, Kazushi Muraoka, Masayuki Ariyoshi (NEC)
pp. 44 - 49

Note: Each article is a technical report without peer review, and its polished version will be published elsewhere.

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan