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Paper Abstract and Keywords
Presentation 2022-10-06 15:05
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
Abstract (in Japanese) (See Japanese page) 
(in English) As for the satellite transmission scheme used for 4K/8K ultra-high definition television (UHDTV), ISDB-S3 which supports the 16APSK and 32APSK modulation schemes has been standardized. Although these modulation schemes increase transmission capacity, they are susceptible to the non-linear characteristics of satellite transponders, especially traveling wave tube amplifiers (TWTAs). Therefore, it is important to analyze the influence of the non-linear characteristics on the APSK modulation signal and ensure an adequate link margin to provide stable satellite broadcasting services. The operating point of a TWTA is a dominant factor in the transmission performance of the APSK modulation signal. Setting the appropriate operating point makes it possible to achieve sufficiently the high link margin to balance the trade-off relation between output power of the satellite transponder and transmission performance. In this study, we define the evaluation method of the link margin and evaluate the optimal operating point for APSK modulation signal in a satellite broadcasting.
Keyword (in Japanese) (See Japanese page) 
(in English) UHDTV / satellite broadcasting / TWTA / Operating point / ISDB-S3 / APSK / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 199, SAT2022-46, pp. 12-15, Oct. 2022.
Paper # SAT2022-46 
Date of Issue 2022-09-29 (SAT) 
ISSN Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SAT KOSST  
Conference Date 2022-10-06 - 2022-10-07 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SAT 
Conference Code 2022-10-SAT-KOSST 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Satellite Transmission Experiment for Improvement of Link Margin of APSK Modulation Signal toward UHDTV Satellite Broadcasting for 12-GHz Band 
Sub Title (in English)  
Keyword(1) UHDTV  
Keyword(2) satellite broadcasting  
Keyword(3) TWTA  
Keyword(4) Operating point  
Keyword(5) ISDB-S3  
Keyword(6) APSK  
Keyword(7)  
Keyword(8)  
1st Author's Name Ryota Akiyama  
1st Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
2nd Author's Name Yuki Koizumi  
2nd Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
3rd Author's Name Shinsuke Yokozawa  
3rd Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
4th Author's Name Masaaki Kojima  
4th Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
5th Author's Name Masafumi Nagasaka  
5th Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
6th Author's Name Masashi Kamei  
6th Author's Affiliation NHK Science and Technology Research Laboratories (NHK)
7th Author's Name Susumu Nakazawa  
7th Author's Affiliation Broadcasting Satellite System Corporation (B-SAT)
8th Author's Name Shuji Kimura  
8th Author's Affiliation Broadcasting Satellite System Corporation (B-SAT)
9th Author's Name Motoki Matsubara  
9th Author's Affiliation Broadcasting Satellite System Corporation (B-SAT)
10th Author's Name Hayato Nishida  
10th Author's Affiliation Broadcasting Satellite System Corporation (B-SAT)
11th Author's Name Shoji Tanaka  
11th Author's Affiliation Broadcasting Satellite System Corporation (B-SAT)
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Speaker Author-1 
Date Time 2022-10-06 15:05:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2022-46 
Volume (vol) vol.122 
Number (no) no.199 
Page pp.12-15 
#Pages
Date of Issue 2022-09-29 (SAT) 


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