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| Presentation | 2012-08-30 11:30 Transmission Performance Improvement by Non-Linear Distortion Noise Control in Spectrum Sharing Seiichiro Okamoto, Shigeru Tomisato (Okayama Univ.), Hiromasa Fujii (NTTDOCOMO), Masaharu Hata (Okayama Univ.), Shunji Miura, Hidetoshi Kayama (NTTDOCOMO)  RCS2012-101 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | On spectrum sharing systems, transmission power control (TPC) effectively works to avoid harmful inter-system interference by reducing transmission power of a low-priority system in shared bands. In such cases, however, non-linear distortion noise severely affects transmission quality of low-priority TPC users because their transmission power is reduced. This paper proposes a non-linear distortion noise control method for adaptive modulation based on a clipping and filtering method to improve reception quality of the low-priority TPC users. The proposed method adaptively filters non-linear distortion noise in TPC bands according to required transmission quality of modulation schemes. From the relation between clipping levels and the non-linear distortion noise power when applying OFDM transmission, optimal clipping levels and distortion noise power ratios for filtering used with the proposed method are investigated by computer simulations. Spectrum properties and BER performance with the proposed method are also evaluated. The results show the proposed method can meet required transmission quality according to modulation schemes of the low-priority users when sharing spectrum with TPC. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | OFDM / Spectrum Sharing / Transmission Power Control / Non-Linear Distortion / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 192, RCS2012-101, pp. 31-36, Aug. 2012. | |
| Paper # | RCS2012-101 | |
| Date of Issue | 2012-08-23 (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 | RCS2012-101 |
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| Conference Information | |
| Committee | SAT RCS |
| Conference Date | 2012-08-30 - 2012-08-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kochi City Cultura-Plaza CUL-PORT |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2012-08-SAT-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Transmission Performance Improvement by Non-Linear Distortion Noise Control in Spectrum Sharing |
| Sub Title (in English) | |
| Keyword(1) | OFDM |
| Keyword(2) | Spectrum Sharing |
| Keyword(3) | Transmission Power Control |
| Keyword(4) | Non-Linear Distortion |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Seiichiro Okamoto |
| 1st Author's Affiliation | Okayama University (Okayama Univ.) |
| 2nd Author's Name | Shigeru Tomisato |
| 2nd Author's Affiliation | Okayama University (Okayama Univ.) |
| 3rd Author's Name | Hiromasa Fujii |
| 3rd Author's Affiliation | NTTDOCOMO, INC. (NTTDOCOMO) |
| 4th Author's Name | Masaharu Hata |
| 4th Author's Affiliation | Okayama University (Okayama Univ.) |
| 5th Author's Name | Shunji Miura |
| 5th Author's Affiliation | NTTDOCOMO, INC. (NTTDOCOMO) |
| 6th Author's Name | Hidetoshi Kayama |
| 6th Author's Affiliation | NTTDOCOMO, INC. (NTTDOCOMO) |
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| Speaker | Author-1 |
| Date Time | 2012-08-30 11:30:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2012-101 |
| Volume (vol) | vol.112 |
| Number (no) | no.192 |
| Page | pp.31-36 |
| #Pages | 6 |
| Date of Issue | 2012-08-23 (RCS) |
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