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| Presentation | 2023-03-01 10:00 Experimental study on reception of 16QAM-OFDM signals using wideband noise and 1bit ADC Takuto Ohtaguro, Masato Saito (Ryukyu Univ.), Takaya Yamazato (Nagoya Univ.)  RCS2022-247 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this study, we conduct experiments on demodulating 16QAM (Quadrature Amplitude Modulation)-OFDM (Orthogonal Frequency Division Multiplexing) signals using wideband noise and 1bit ADC (Analogue-to-Digital Converter). Although 1bit ADC cannot distinguish signal level, wideband noise, oversampling, and stochastic processing of the 1bit ADC ouput make the 16QAM-OFDM signals be demodulated with error free. In our previous study, we applied LPF (Low Pass Filter) after frequency-conversion to generate baseband signals to remove the harmonic components of the baseband signals. In this study, by removing the LPF or bandlimiting loosely, we confirm that error free transmission is possible for 500 byte of 16QAM-OFDM signals with appropriate level of wideband noise. When the cutoff frequency of the low-pass filter was varied, a lower error rate was achieved with a wider noise bandwidth. The wider the noise bandwidth, the wider the signal-to-noise power density ratio at which a low error rate can be achieved. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | 1bit ADC / 16QAM / OFDM / wideband noise / oversampling / analytic signal / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 399, RCS2022-247, pp. 1-8, March 2023. | |
| Paper # | RCS2022-247 | |
| Date of Issue | 2023-02-22 (RCS) | |
| ISSN | 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 | RCS2022-247 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2023-03-01 - 2023-03-03 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2023-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experimental study on reception of 16QAM-OFDM signals using wideband noise and 1bit ADC |
| Sub Title (in English) | |
| Keyword(1) | 1bit ADC |
| Keyword(2) | 16QAM |
| Keyword(3) | OFDM |
| Keyword(4) | wideband noise |
| Keyword(5) | oversampling |
| Keyword(6) | analytic signal |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takuto Ohtaguro |
| 1st Author's Affiliation | University of the Ryukyus (Ryukyu Univ.) |
| 2nd Author's Name | Masato Saito |
| 2nd Author's Affiliation | University of the Ryukyus (Ryukyu Univ.) |
| 3rd Author's Name | Takaya Yamazato |
| 3rd Author's Affiliation | Nagoya University (Nagoya Univ.) |
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| Speaker | Author-2 |
| Date Time | 2023-03-01 10:00:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2022-247 |
| Volume (vol) | vol.122 |
| Number (no) | no.399 |
| Page | pp.1-8 |
| #Pages | 8 |
| Date of Issue | 2023-02-22 (RCS) |
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