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| Presentation | 2016-03-02 09:00 Adaptive Low Power Density Baseband Radio[II] -- Multi-user Transmission Scheme in Propagation Environments Having Each Different Delay Spread -- Jin Nakazato, Yoshio Karasawa (UEC)  SR2015-89 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have proposed low power density baseband radio with frequency-domain differential spreading code for realizing underlay-type SU communications. Following the ABR signal-generation method based on the OFDM principle, we have proposed a system of spectrum spreading low power density baseband radio that offers frequency diversity gain in frequency-selective fading environments. When a strong PU signal existed in the same frequency band, however, there was a serious interference problem where SU system affected significantly from the PU system. Therefore, previously, we proposed an adaptive low power density communication scheme which uses white space so as not to overlap PU system in the same frequency band. In this paper, we investigate the condition where the differentially-encoded spreading code exhibits promising effects in suppressing the fading by changing the parameter of delay spread and spreading frequency band. Furthermore, we propose a multi-user transmission scheme where each user link has different delay spread. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | baseband radio / cognitive radio / software-defined radio / Frequency-Domain Differential Spreading Coding / CDMA / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 473, SR2015-89, pp. 1-7, March 2016. | |
| Paper # | SR2015-89 | |
| Date of Issue | 2016-02-24 (SR) | |
| 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 | SR2015-89 |
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| Conference Information | |
| Committee | RCS CCS SR SRW |
| Conference Date | 2016-03-02 - 2016-03-04 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | SR |
| Conference Code | 2016-03-RCS-CCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Adaptive Low Power Density Baseband Radio[II] |
| Sub Title (in English) | Multi-user Transmission Scheme in Propagation Environments Having Each Different Delay Spread |
| Keyword(1) | baseband radio |
| Keyword(2) | cognitive radio |
| Keyword(3) | software-defined radio |
| Keyword(4) | Frequency-Domain Differential Spreading Coding |
| Keyword(5) | CDMA |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Jin Nakazato |
| 1st Author's Affiliation | The University of Electro-Communications (UEC) |
| 2nd Author's Name | Yoshio Karasawa |
| 2nd Author's Affiliation | The University of Electro-Communications (UEC) |
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| Speaker | Author-1 |
| Date Time | 2016-03-02 09:00:00 |
| Presentation Time | 25 minutes |
| Registration for | SR |
| Paper # | SR2015-89 |
| Volume (vol) | vol.115 |
| Number (no) | no.473 |
| Page | pp.1-7 |
| #Pages | 7 |
| Date of Issue | 2016-02-24 (SR) |
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