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| Presentation | 2013-06-21 16:20 Energy Efficiency of Spread Spectrum Single-Carrier Transmission Amnart Boonkajay (Tohoku Univ.), Koichi Adachi, Sumei Sun (I2R), Fumiyuki Adachi (Tohoku Univ.)  RCS2013-75 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Energy efficiency (EE), which is defined as a ratio of spectrum efficiency (SE) to power consumption, is a key performance metric in mobile communication system. The signal waveform has little influence on energy consumption of analog circuit and baseband unit. On the other hand, the energy consumption of power amplifier (PA) highly depends on signal waveform. The power amplifier efficiency (PAE) generally depends on the transmit power and decreases as the signal amplitude becomes smaller. If the signal exhibits large peak-to-average power ratio (PAPR), the transmit power needs to be backed off so that the peak signal amplitude is linearly amplified. This results in a poor PAE as the operation point of PA is far below its maximum. The authors previously proposed a single-carrier with frequency domain spread spectrum (SC-FDSS). In this paper, the EE and SE of SC-FDSS are compared to those of SC with conventional time-domain spread spectrum (SC-TDSS). We also observe an optimum spreading factor (SF) for each spreading scheme which gives good SE-EE tradeoff at particular target bit-error rate (BER). | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Spectral efficiency / energy efficiency / power amplifier / single-carrier transmission / spread spectrum / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 93, RCS2013-75, pp. 219-223, June 2013. | |
| Paper # | RCS2013-75 | |
| Date of Issue | 2013-06-13 (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 | RCS2013-75 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2013-06-20 - 2013-06-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2013-06-RCS |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Energy Efficiency of Spread Spectrum Single-Carrier Transmission |
| Sub Title (in English) | |
| Keyword(1) | Spectral efficiency |
| Keyword(2) | energy efficiency |
| Keyword(3) | power amplifier |
| Keyword(4) | single-carrier transmission |
| Keyword(5) | spread spectrum |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Amnart Boonkajay |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Koichi Adachi |
| 2nd Author's Affiliation | Institute for Infocomm Research (I2R) |
| 3rd Author's Name | Sumei Sun |
| 3rd Author's Affiliation | Institute for Infocomm Research (I2R) |
| 4th Author's Name | Fumiyuki Adachi |
| 4th Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-06-21 16:20:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | RCS2013-75 |
| Volume (vol) | vol.113 |
| Number (no) | no.93 |
| Page | pp.219-223 |
| #Pages | 5 |
| Date of Issue | 2013-06-13 (RCS) |
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