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| Presentation | 2018-01-22 13:30 Design Method of High-Order Circular QAM Constellation with Robustness for Phase Noise and Its BER Performance Bin Zheng, Mamoru Sawahashi (Tokyo City Univ.), Norifumi Kamiya (NEC)  IT2017-64 SIP2017-72 RCS2017-278 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes a design method for high-order circular QAM constellation which is robust for time-varying phase noise. We assume the application of partial Low-Density Parity-Check (LDPC) coding with double Gray mapping and collaborative LDPC decoding which are practical methods for high-rate LDPC code. In the proposed design method, we design the high-order circular QAM constellation based mainly on a variety of the minimum Euclidean distances between each signal point and the neighboring signal points. In this paper, we describe the proposed design method and proposed the circular 1024QAM constellation comprising 16 points x 2 rings + 32 points x 1 ring + 64 points x 15 rings. Computer simulation results show the validity of the proposed design method. We also show that the proposed circular 1024QAM constellation improves the required received signal-to-noise power ratio (SNR) at the bit error rate of 10-6 by approximately 0.2 – 0.5 dB compared to rectangular 1024QAM in AWGN channel with time-varying phase noise. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | circular QAM / partial LDPC coding / double Gray mapping / minimum Euclidean distance / phase noise / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 117, no. 396, RCS2017-278, pp. 55-60, Jan. 2018. | |
| Paper # | RCS2017-278 | |
| Date of Issue | 2018-01-15 (IT, SIP, RCS) | |
| 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 | IT2017-64 SIP2017-72 RCS2017-278 |
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| Conference Information | |
| Committee | SIP IT RCS |
| Conference Date | 2018-01-22 - 2018-01-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Sunport Hall Takamatsu |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2018-01-SIP-IT-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design Method of High-Order Circular QAM Constellation with Robustness for Phase Noise and Its BER Performance |
| Sub Title (in English) | |
| Keyword(1) | circular QAM |
| Keyword(2) | partial LDPC coding |
| Keyword(3) | double Gray mapping |
| Keyword(4) | minimum Euclidean distance |
| Keyword(5) | phase noise |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Bin Zheng |
| 1st Author's Affiliation | Tokyo City University (Tokyo City Univ.) |
| 2nd Author's Name | Mamoru Sawahashi |
| 2nd Author's Affiliation | Tokyo City University (Tokyo City Univ.) |
| 3rd Author's Name | Norifumi Kamiya |
| 3rd Author's Affiliation | NEC (NEC) |
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| Speaker | Author-1 |
| Date Time | 2018-01-22 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | IT2017-64, SIP2017-72, RCS2017-278 |
| Volume (vol) | vol.117 |
| Number (no) | no.394(IT), no.395(SIP), no.396(RCS) |
| Page | pp.55-60 |
| #Pages | 6 |
| Date of Issue | 2018-01-15 (IT, SIP, RCS) |
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