| Paper Abstract and Keywords |
| Presentation |
2026-03-06 13:45
Relationship Between Frequency-Domain Iterative Equalization and Sample Timing Offset for Outdoor Mobile MIMO Transmission Experiments Yusuke Nagao, Hidekazu Murata (Yamaguchi Univ.) RCS2025-293 |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
In recent years, multiple-input multiple-output (MIMO) systems and cooperative MIMO reception, which virtually exploits multiple antennas through coordination among nearby terminals, have attracted significant attention for improving spectral efficiency. However, in environments where multiple terminals communicate simultaneously, inter-symbol interference (ISI) caused by transmit-receive sampling timing offsets degrades transmission performance. This paper evaluates the impact of timing offsets on the bit error rate (BER) performance of MIMO reception employing frequency-domain iterative equalization with low-density parity-check codes through computer simulations. Simulation results show that the current system can tolerate delayed components of up to three symbol durations, whereas it is highly sensitive to advanced components, exhibiting a sharp BER degradation even with small timing offsets. Furthermore, increasing the number of frequency-domain iterations and streams enhances inter-stream interference near symbol boundaries, which further degrades BER performance. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
MIMO / Iterative equalizaation / / / / / / |
| Reference Info. |
IEICE Tech. Rep., vol. 125, no. 387, RCS2025-293, pp. 200-203, March 2026. |
| Paper # |
RCS2025-293 |
| Date of Issue |
2026-02-25 (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 |
RCS2025-293 |
| Conference Information |
| Committee |
RCS SR SRW |
| Conference Date |
2026-03-04 - 2026-03-06 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Tokyo University of Science |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Mobile Communication Workshop |
| Paper Information |
| Registration To |
RCS |
| Conference Code |
2026-03-RCS-SR-SRW |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Relationship Between Frequency-Domain Iterative Equalization and Sample Timing Offset for Outdoor Mobile MIMO Transmission Experiments |
| Sub Title (in English) |
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| Keyword(1) |
MIMO |
| Keyword(2) |
Iterative equalizaation |
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| 1st Author's Name |
Yusuke Nagao |
| 1st Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name |
Hidekazu Murata |
| 2nd Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2026-03-06 13:45:00 |
| Presentation Time |
25 minutes |
| Registration for |
RCS |
| Paper # |
RCS2025-293 |
| Volume (vol) |
vol.125 |
| Number (no) |
no.387 |
| Page |
pp.200-203 |
| #Pages |
4 |
| Date of Issue |
2026-02-25 (RCS) |