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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SAT, SANE (Joint) |
2024-02-09 09:55 |
Kagoshima | AmaHome PLAZA (Amami City Shimin Koryu Center) (Primary: On-site, Secondary: Online) |
Study on non-linear compensation for LDM transmission in satellite broadcasting system
-- Improving transmission performance using DPD and pilot signals -- Masaaki Kojima, Yuki Koizumi, Masashi Kamei (NHK)  SAT2023-69 |
We are considering a satellite broadcasting system with layered division multiplexing (LDM) scheme that multiplexes two ... [more] | SAT2023-69 pp.55-59 |
| RCS, SAT (Joint) |
2023-08-31 09:50 |
Nagano | Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
Improving Performance of LDM Transmission against Non-linear Distortion in Satellite Broadcasting System
-- Decoding Method of LL Signal with Pilot Signals -- Yuki Koizumi, Masaaki Kojima, Masashi Kamei (NHK) SAT2023-35 |
We are developing a satellite broadcasting system with layered division multiplexing (LDM) scheme that multiplexes multi... [more] | SAT2023-35 pp.13-18 |
| SAT, KOSST | 2022-10-06 15:05 |
Fukuoka | (Primary: On-site, Secondary: Online) |
Satellite Transmission Experiment for Improvement of Link Margin of APSK Modulation Signal toward UHDTV Satellite Broadcasting for 12-GHz Band Ryota Akiyama, Yuki Koizumi, Shinsuke Yokozawa, Masaaki Kojima, Masafumi Nagasaka, Masashi Kamei (NHK), Susumu Nakazawa, Shuji Kimura, Motoki Matsubara, Hayato Nishida, Shoji Tanaka (B-SAT) SAT2022-46 |
As for the satellite transmission scheme used for 4K/8K ultra-high definition television (UHDTV), ISDB-S3 which supports... [more] | SAT2022-46 pp.12-15 |
| SAT | 2020-12-11 10:25 |
Online | Online | Study on Effects of Compensation Technique for Distortion by 12-GHz-band Broadcasting Satellite Transponder Masaaki Kojima, Masashi Kamei, Hisashi (NHK) SAT2020-26 |
[more] | SAT2020-26 pp.19-23 |
| SAT, RCS (Joint) |
2020-08-20 09:50 |
Online | Online | Measurement of C/I at picture disruption in BS, CS receivers caused by pulse modulated wave interference Kazuyoshi Shogen (B-SAT), Keiichi Tajima (SJC), Junya Matsushita, Masaaki Kojima (NHK), Shoji Tanaka (B-SAT), Yoshikazu Yamada, Taro Hamanaka, Akinori Hashimoto (NHK) SAT2020-12 |
In order to clarify the conditions like the allowable interference level and the separation distance necessary for preve... [more] | SAT2020-12 pp.13-18 |
| SAT | 2019-10-10 16:10 |
Fukuoka | JR HAKATA CITY {10F RoomA+B} | Comparative Study of Digital Pre-Distortion for 32APSK by Hardware Experiments and Numerical Calculations Masaaki Kojima, Yuki Koizumi, Yoichi Suzuki, Hisashi Sujikai (NHK) SAT2019-53 |
The satellite transmission standard for 4K/8K ultra high definition television (UHDTV) services was recommended in ITU-R... [more] | SAT2019-53 pp.31-35 |
| AP, SANE, SAT (Joint) |
2019-07-18 12:40 |
Miyagi | Tohoku Univ. | Measurement of image interference suppression ratio for BS and CS receiving antennas Kazuyoshi Shogen (B-SAT), Keiichi Tajima (SJC), Hirishi Hanado (NICT), Tomohiro Shimazaki, Masaaki Kojima (NHK), Shoji Tanaka (B-SAT), Akinori Hashimoto, Kazunori Yokohata, Taro Hamanaka (NHK) AP2019-30 SAT2019-12 |
In order to clarify the conditions like the allowable interference level and the separation distance necessary for preve... [more] | AP2019-30 SAT2019-12 pp.49-53(AP), pp.25-29(SAT) |
| SANE, SAT (Joint) |
2019-02-14 11:15 |
Kagoshima | Tanegashima Island | Evaluation of Satellite Transmission Characteristics of ISDB-S3 for 4K/8K Broadcasting Shinsuke Yokozawa, Masaaki Kojima, Masashi Kamei, Kazunori Yokohata (NHK), Hayato Nishida (B-SAT), Hisashi Sujikai (NHK) SAT2018-77 |
4K/8K broadcasting with the BSAT-4a satellite began in Dec. 2018. This broadcasting adopts the ISDB-S3 technical standar... [more] | SAT2018-77 pp.115-118 |
| SAT | 2018-10-12 12:55 |
Overseas | KARI | [Special Talk]
Overview of 8K UHDTV Satellite Broadcasting Hisashi Sujikai, Yoichi Suzuki, Masaaki Kojima (NHK) SAT2018-53 |
NHK (Japan Broadcasting Corporation) is going to launch the world's first 8K UHDTV satellite broadcasting in Japan in De... [more] | SAT2018-53 pp.57-61 |
| SAT | 2018-10-12 13:45 |
Overseas | KARI | Performance Comparison of Digital Pre-Distortion Techniques over Satellite Channel Masaaki Kojima, Yuki Koizumi, Yoichi Suzuki, Hisashi Sujikai (NHK) SAT2018-54 |
Aiming for practical usage of 32APSK in 4K/8K satellite broadcasting, we have developed a digital pre-distortion techniq... [more] | SAT2018-54 pp.67-71 |
| AP, SANE, SAT (Joint) |
2018-07-18 14:30 |
Hokkaido | Hokkaido Univ. | Prompt Report on Wide-band Transmission Experiment with 21-GHz band Broadcasting Satellite in NHK STRL OPEN HOUSE 2018 Yoichi Suzuki, Hisashi Sujikai, Yuki Koizumi, Masafumi Nagasaka, Masaaki Kojima, Atsushi Iwasaki, Shoji Tanaka (NHK), Susumu nakazawa, Osamu Yamazaki (B-SAT) SAT2018-14 |
[more] | SAT2018-14 pp.19-23 |
| AP, SANE, SAT (Joint) |
2018-07-19 09:20 |
Hokkaido | Hokkaido Univ. | Prototype and Evaluation Performance of the Transmitter and Receiver with Set-Partitioning 64APSK Coded Modulation Yuki Koizumi, Yoichi Suzuki, Masaaki Kojima, Hisashi Sujikai (NHK) SAT2018-17 |
We are researching on a set-partitioning 64APSK coded modulation for the purpose of expanding channel capacity for satel... [more] | SAT2018-17 pp.37-42 |
| AP, SANE, SAT (Joint) |
2018-07-19 09:45 |
Hokkaido | Hokkaido Univ. | Performance Improvement by Digital Pre-Distortion Technique for 32APSK over Satellite Transmission Masaaki Kojima, Yoichi Suzuki, Yuki Koizumi, Hisashi Sujikai (NHK) SAT2018-18 |
4K/8K test broadcasting by satellite started on August 1st 2016, and 4K/8K commercial broadcasting will start on Decembe... [more] | SAT2018-18 pp.43-48 |
| SAT, SANE (Joint) |
2018-02-23 13:20 |
Yamaguchi | The Yamaguchi Chamber of Commerce and Industry | Comparison of Transmission Performance for 32APSK over TWTA and LTWTA Masaaki Kojima, Yoichi Suzuki, Yuki Koizumi, Hisashi Sujikai, Shoji Tanaka (NHK) SAT2017-68 |
4K/8K test broadcasting for satellite have been started since August 2016. 4K/8K broadcasting services for satellite wil... [more] | SAT2017-68 pp.65-68 |
| SAT | 2017-10-27 15:30 |
Okinawa | Okinawa Cellular Telephone Company | Estimation Technique for Non-linear Characteristics for Satellite Transponder Masaaki Kojima, Yoichi Suzuki, Yuki Koizumi, Hisashi Sujikai, Shoji Tanaka (NHK) SAT2017-55 |
We previously proposed a digital pre-distortion technique that has transmitter-built-in satellite transponder characteri... [more] | SAT2017-55 pp.131-136 |
| RCS, SAT (Joint) |
2017-08-18 15:45 |
Niigata | Niigata Univ. | [Encouragement Talk]
Performance improvement of Set-Partitioning 64APSK coded modulation optimizing signal constellation points Yuki Koizumi, Yoichi Suzuki, Masaaki Kojima, Hisashi Sujikai, Shoji Tanaka (NHK) SAT2017-36 |
We are engaged in researching set-partitioning multi-level coded modulation for the purpose of increasing the capacity o... [more] | SAT2017-36 pp.81-85 |
| SANE, SAT (Joint) |
2017-02-24 09:20 |
Chiba | Katsuura Hotel Mikazuki | A study on the design of 64APSK constellation Yuki Koizumi, Yoichi Suzuki, Masaaki Kojima, Kyoichi Saito, Shoji Tanaka (NHK) SAT2016-72 |
[more] | SAT2016-72 pp.63-67 |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2016-11-10 17:25 |
Nagasaki | Nagasaki Shoko Kaigi Sho | Characteristics of Distribution Equipments for UHDTV Satellite Broadcasting Reception Masafumi Nagasaka, Yuki Koizumi, Masaaki Kojima, Shoji Tanaka (NHK), Kazuya Ueda (ARIB) |
[more] | |
| SAT | 2016-10-13 15:15 |
Overseas | Incheon Univ. Songdo R104, Auditorium & Performing Place | A study on 64APSK Coded Modulation Yuki Koizumi, Yoichi Suzuki, Masaaki Kojima, Kyoichi Saito, Shoji Tanaka (NHK) SAT2016-55 |
We’re engaged in improving the performance of 64APSK coded modulation with the purpose of further increasing transmissio... [more] | SAT2016-55 pp.51-56 |
| SAT, RCS (Joint) |
2016-08-18 12:15 |
Miyagi | Tohoku Gakuin University | [Encouragement Talk]
Initiatives for Super Hi-vision Satellite Test Broadcasting Yoichi Suzuki, Masaaki Kojima, Yuki Koizumi, Kyoichi Saito, Shoji Tanaka, Ichie Masuhara (NHK) SAT2016-35 |
[more] | SAT2016-35 pp.13-17 |
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