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| Presentation | 2015-03-04 15:50 Baseband Signal Reproduction Using Real-Zero for Wireless Communications Kelong Hu, Kazuhiko Fukawa, Hiroshi Suzuki, Yuyuan Chang (Tokyo Tech)  RCS2014-332 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The advanced Si-CMOS IC technology can combine baseband digital circuits and RF analog circuits together, and can implement the combined circuits on a single chip. However, the integrated circuits have major problems such as lower voltage of the analog circuits, lower SNR, gain reduction, and non-uniform characteristics of circuit elements. To cope with these problems, this report proposes a new analog-to-digital conversion scheme based on time digital conversion (TDC). The proposed scheme subtracts a cosine wave considered a reference signal from a bandpass signal, and measures timing when the reference signal coincides with the bandpass signal. Such timing is called real zeros or zero cross. Using the real zeros, the proposed scheme estimates sampled baseband signals by a constrained least squares algorithm. In addition, for reducing the computational complexity to deal with a long bandpass signal sequence, another scheme divides the long bandpass signal sequence into short sequences, and applies the above-mentioned estimation algorithm into such short sequences. Computer simulations with frequency of the reference signal and time resolution of real zeros being parameters are conducted in order to quantitatively evaluate accuracy of the signal reproduction. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wireless communications / real zero / TDC / signal reproduction / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 490, RCS2014-332, pp. 183-188, March 2015. | |
| Paper # | RCS2014-332 | |
| Date of Issue | 2015-02-25 (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 | RCS2014-332 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2015-03-04 - 2015-03-06 |
| 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 | RCS |
| Conference Code | 2015-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Baseband Signal Reproduction Using Real-Zero for Wireless Communications |
| Sub Title (in English) | |
| Keyword(1) | Wireless communications |
| Keyword(2) | real zero |
| Keyword(3) | TDC |
| Keyword(4) | signal reproduction |
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| 1st Author's Name | Kelong Hu |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 2nd Author's Name | Kazuhiko Fukawa |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 3rd Author's Name | Hiroshi Suzuki |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
| 4th Author's Name | Yuyuan Chang |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech) |
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| Speaker | Author-1 |
| Date Time | 2015-03-04 15:50:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2014-332 |
| Volume (vol) | vol.114 |
| Number (no) | no.490 |
| Page | pp.183-188 |
| #Pages | 6 |
| Date of Issue | 2015-02-25 (RCS) |
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