| Paper Abstract and Keywords |
| Presentation |
2026-01-28 16:20
Experimental Demonstration of Asynchronous Uplink CDMA using Adaptive Interference Cancellation Specialized for UOWC Systems
Ekkaphol Khansalee, Yasuhiro Okamura, Masanori Hanawa (Univ. of Yamanashi) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This report experimentally demonstrates an asynchronous uplink CDMA system for underwater optical wireless communication (UOWC). In underwater environments, platform swaying causes nanosecond-scale propagation-delay fluctuations that disrupt spreading-code orthogonality and create time-varying multiuser interference (MUI). Conventional decoders struggle to mitigate MUI in asynchronous scenarios. To address this, an adaptive interference cancellation (AIC) technique is proposed, utilizing pilot signals to track and suppress MUI. In a two-user UOWC link with fixed-code matched filtering, the BER approaches the single-user baseline, requiring only 0.4 dB and 1.4 dB additional received power for users 1 and 2, respectively, to meet the FEC limit. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Asynchronous Uplink / Code Division Multiple Access / Adaptive Interference Cancellation / Underwater Optical Wireless Communication / / / / |
| Reference Info. |
IEICE Tech. Rep. |
| Paper # |
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| Download PDF |
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| Conference Information |
| Committee |
UWT |
| Conference Date |
2026-01-28 - 2026-01-28 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Ritsumeikan Tokyo Campus |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
Underwater Wireless Technologya |
| Paper Information |
| Registration To |
UWT |
| Conference Code |
2026-01-UWT |
| Language |
English |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Experimental Demonstration of Asynchronous Uplink CDMA using Adaptive Interference Cancellation Specialized for UOWC Systems |
| Sub Title (in English) |
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| Keyword(1) |
Asynchronous Uplink |
| Keyword(2) |
Code Division Multiple Access |
| Keyword(3) |
Adaptive Interference Cancellation |
| Keyword(4) |
Underwater Optical Wireless Communication |
| Keyword(5) |
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| 1st Author's Name |
Ekkaphol Khansalee |
| 1st Author's Affiliation |
University of Yamanashi (Univ. of Yamanashi) |
| 2nd Author's Name |
Yasuhiro Okamura |
| 2nd Author's Affiliation |
University of Yamanashi (Univ. of Yamanashi) |
| 3rd Author's Name |
Masanori Hanawa |
| 3rd Author's Affiliation |
University of Yamanashi (Univ. of Yamanashi) |
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| Speaker |
Author-1 |
| Date Time |
2026-01-28 16:20:00 |
| Presentation Time |
25 minutes |
| Registration for |
UWT |
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| Volume (vol) |
vol. |
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