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 Results 1 - 20 of 63  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP, SANE, SAT
(Joint)
2022-07-27
13:30
Hokkaido Asahikawa Taisetsu Crystal Hall
(Primary: On-site, Secondary: Online)
A Consideration on the Radiation Pattern of NGSO Satellite Onboard Phased Array Antenna
Susumu Nakazawa, Motoki Matsubara, Syuji Kimura, Shihoko Nakamichi, Shoji Tanaka, Kazuyoshi Shogen (B-SAT), Junichi Takiyama (SED) AP2022-39 SANE2022-24 SAT2022-20
 [more] AP2022-39 SANE2022-24 SAT2022-20
pp.28-33(AP), pp.12-17(SANE), pp.18-23(SAT)
AP, WPT
(Joint)
2022-01-20
15:10
Tottori Kenmin-Fureai-Kaikan
(Primary: On-site, Secondary: Online)
[Tutorial Lecture] Research of On board Array-fed Reflector Antenna for 21GHz-band Broadcasting Satellite
Shoji Tanaka, Susumu Nakazawa (B-SAT), Masafumi Nagasaka (NHK) AP2021-146
 [more] AP2021-146
pp.64-69
RCS, SAT
(Joint)
2021-08-26
18:05
Online Online Measurement of Off-Axis Radiation Power from NGSO Communication Satellite Operating in the Space
Kazuyoshi Shogen, Susumu Nakazawa, Shoji Tanaka (B-SAT) SAT2021-33
This paper describes the measurement of the off-axis radiation power from a non-geostationary satellite orbit (NGSO) com... [more] SAT2021-33
pp.27-32
AP, SANE, SAT
(Joint)
2021-07-30
09:25
Online Online The measurement of radiation pattern of consumer DBS receiving antenna in the 9 GHz band
Yasushi Mizuki (NHK), Shoji Tanaka, Kazuyoshi Shogen (B-SAT), Satoshi Iwasaki, Junya Matsushita, kazunori Yokohata (NHK) SAT2021-23
In order to clarify the conditions like the allowable interference level and the separation distance necessary for preve... [more] SAT2021-23
pp.18-23
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
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)
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
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
CS, IE, IPSJ-AVM, ITE-BCT [detail] 2017-11-30
14:35
Aichi Nagoya University Efforts toward Transmission Experiments Utilized 21-GHz Band Transponder of Broadcasting Satellite
Masafumi Nagasaka, Susumu Nakazawa, Hisashi Sujikai, Shoji Tanaka (NHK)
 [more]
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
AP 2017-04-21
09:30
Osaka Osaka university A Study on 12/21-GHz Dual-circularly Polarized Feed Antenna for Satellite Broadcasting Reception
Masafumi Nagasaka, Susumu Nakazawa, Atsushi Iwasaki, Shoji Tanaka (NHK) AP2017-12
NHK started test satellite broadcasting of UHDTV by using BS-17 transponder in August 2016, and practical broadcasting w... [more] AP2017-12
pp.59-64
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
AP, SAT, SANE
(Joint)
2016-07-21
13:50
Hokkaido Otaru port marina APSK Performance Verification for Equalization Using Satellite Characteristics
Masaaki Kojima, Yoichi Suzuki, Yuki Koizumi, Kyoichi Saito, Shoji Tanaka (NHK) SAT2016-17
A technical standard for a satellite transmission system (ARIB STD-B44 ver. 2.0) has been drawn up for 4K/8K UHDTV servi... [more] SAT2016-17
pp.35-38
AP, SAT, SANE
(Joint)
2016-07-22
09:55
Hokkaido Otaru port marina Relation between Interference and the Increase of Outage Time Caused by Rain Attenuation in the Beoadcasting Satellite link
Kazuyoshi Shogen (B-SAT), Susumu Nakazawa, Shoji Tanaka (NHK) AP2016-56 SAT2016-22
We have proposed to evaluate the impact of interference on the performance of BSS (Broadcasting Satellite Services) in t... [more] AP2016-56 SAT2016-22
pp.109-113(AP), pp.63-67(SAT)
SAT, SANE
(Joint)
2016-02-17
13:10
Hiroshima Hiroshima Institute of Technology Wideband Transmission Performance over Proto-type Transponder for 21GHz-band Broadcasting Satellite under Thermal Vacuum
Masaaki Kojima, Masashi Kamei, Masafumi Nagasaka, Susumu Nakazawa, Yoichi Suzuki, Yuki Koizumi, Kyoichi Saito, Shoji Tanaka, Tomohiro Saito (NHK) SAT2015-74
We are studying a satellite broadcasting system using 21GHz-band (21.4-22.0GHz) to provide higher realistic sensation se... [more] SAT2015-74
pp.61-64
IE, CS, IPSJ-AVM, ITE-BCT [detail] 2015-12-03
10:20
Hyogo   Transmission experiments for 32APSK over satellite transponder
Yuki Koizumi, Masaaki Kojima, Yoichi Suzuki, Kyoichi Saito, Shoji Tanaka (NHK), Hayato Nishida (B-SAT)
 [more]
 Results 1 - 20 of 63  /  [Next]  
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