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| Presentation | 2017-08-18 15:45 [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 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We are engaged in researching set-partitioning multi-level coded modulation for the purpose of increasing the capacity of satellite transmission. We have previously designed a 64APSK coded modulation whose number of circles allocating constellation points was restricted to four and confirmed that it can achieve better transmission performance than the gray mapped 64QAM. In order to perform more efficient transmission with high channel capacity, the flexible constellation design without restricting not only the number of circumferences but also circumference arrangement is worth considering. In this report, we first discuss the design results when the number of circles is set as the design parameters. We then propose a design method that constellation points are not arranged circumferentially but at arbitrary coordinates in the IQ plane. We indicate that the proposed method can increase channel capacity compared to the previous design method with circumference arrangement. Finally, bit allocation and optimization of LDPC coding rate distribution are performed for the constellation designed with the proposed method , and the transmission performance under the AWGN is evaluated by computer simulation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 64APSK / Coded modulation, / Set-partitioning / Channel capacity / Constellation / LDPC code / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 174, SAT2017-36, pp. 81-85, Aug. 2017. | |
| Paper # | SAT2017-36 | |
| Date of Issue | 2017-08-10 (SAT) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
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) | |
| Download PDF | SAT2017-36 |
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| Conference Information | |
| Committee | RCS SAT |
| Conference Date | 2017-08-17 - 2017-08-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Niigata Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | SAT |
| Conference Code | 2017-08-RCS-SAT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance improvement of Set-Partitioning 64APSK coded modulation optimizing signal constellation points |
| Sub Title (in English) | |
| Keyword(1) | 64APSK |
| Keyword(2) | Coded modulation, |
| Keyword(3) | Set-partitioning |
| Keyword(4) | Channel capacity |
| Keyword(5) | Constellation |
| Keyword(6) | LDPC code |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuki Koizumi |
| 1st Author's Affiliation | NHK (NHK) |
| 2nd Author's Name | Yoichi Suzuki |
| 2nd Author's Affiliation | NHK (NHK) |
| 3rd Author's Name | Masaaki Kojima |
| 3rd Author's Affiliation | NHK (NHK) |
| 4th Author's Name | Hisashi Sujikai |
| 4th Author's Affiliation | NHK (NHK) |
| 5th Author's Name | Shoji Tanaka |
| 5th Author's Affiliation | NHK (NHK) |
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| Speaker | Author-1 |
| Date Time | 2017-08-18 15:45:00 |
| Presentation Time | 25 minutes |
| Registration for | SAT |
| Paper # | SAT2017-36 |
| Volume (vol) | vol.117 |
| Number (no) | no.174 |
| Page | pp.81-85 |
| #Pages | 5 |
| Date of Issue | 2017-08-10 (SAT) |
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