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| Paper Abstract and Keywords | ||
| Presentation | 2011-08-26 10:45 High Efficient Power Amplification of M-ary Modulated Signal by Spatial Superposition Masayoshi Tanaka (Nihon Univ.), Hiroyasu Madate (Kyosera)  SAT2011-32 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper presents a new spatial power combining technology suitable for superposed M-ary modulated communication system that can provide efficient use of the frequency resource and transmitted power. Employing M-ary modulation would be effective for broad-band transmission with a frequency-band-limited system. However, an M-ary modulation scheme, such as 16QAM or 64QAM is generally mush more vulnerable to nonlinear distortion from power devices than a conventional QPSK scheme because of large amplitude variation. We propose a new system that incorporates multiple OQPSK modulators and combines their output signals in a vector-sum manner in space to produce an M-ary signal. It was found from this study that the proposed system shows better performance than that of conventional system on the nonlinear transmission channel usually observed in such a power amplifier. This unique configuration enables the reliable transmission of higher data rates with efficient use of power and bandwidth. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spatially Superposition / M-ary modulation / 16QAM / 64QAM / OQPSK / HPA / High efficient power amplification / Spectrum | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 179, SAT2011-32, pp. 87-92, Aug. 2011. | |
| Paper # | SAT2011-32 | |
| Date of Issue | 2011-08-18 (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 | SAT2011-32 |
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| Conference Information | |
| Committee | RCS SAT |
| Conference Date | 2011-08-25 - 2011-08-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Niigata Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Special session on coding techniques, Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | SAT |
| Conference Code | 2011-08-RCS-SAT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High Efficient Power Amplification of M-ary Modulated Signal by Spatial Superposition |
| Sub Title (in English) | |
| Keyword(1) | Spatially Superposition |
| Keyword(2) | M-ary modulation |
| Keyword(3) | 16QAM |
| Keyword(4) | 64QAM |
| Keyword(5) | OQPSK |
| Keyword(6) | HPA |
| Keyword(7) | High efficient power amplification |
| Keyword(8) | Spectrum |
| 1st Author's Name | Masayoshi Tanaka |
| 1st Author's Affiliation | Nihon University (Nihon Univ.) |
| 2nd Author's Name | Hiroyasu Madate |
| 2nd Author's Affiliation | Kyosera (Kyosera) |
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| Speaker | Author-1 |
| Date Time | 2011-08-26 10:45:00 |
| Presentation Time | 25 minutes |
| Registration for | SAT |
| Paper # | SAT2011-32 |
| Volume (vol) | vol.111 |
| Number (no) | no.179 |
| Page | pp.87-92 |
| #Pages | 6 |
| Date of Issue | 2011-08-18 (SAT) |
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