Koichi Adachi

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Creator: Schloss Dagstuhl - Leibniz Center for Informatics
Published: 1993
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Keywords: dblp, XML, computer science, scholarly publications, metadata

◀ ▶ joint publications with Mai Ohta

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Publications

2025
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Keita Aoki, Osamu Takyu, Koichi Adachi, Mai Ohta, Takeo Fujii:
Resource Allocation Based on Relation Information of Hidden Node for Minimizing Packet Error in LPWA. VTC2025-Fall 2025: 1-7
2024
[j39]
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Osamu Takyu, Keita Takeda, Ryuji Miyamoto, Koichi Adachi, Mai Ohta, Takeo Fujii:
An Environment-Aware Adaptive Data-Gathering Method for Packet-Level Index Modulation in LPWA. Sensors 24(8): 2514 (2024)
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Kosuke Suzuki, Koichi Adachi, Mai Ohta, Osamu Takyu, Takeo Fujii:
Packet-Level Index Modulation Based on Channel Activity Detection. IEEE Trans. Wirel. Commun. 23(4): 2812-2823 (2024)
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Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Adaptive Resource Allocation Utilizing Periodic Traffic and Clock Drift in LPWAN. IEEE Trans. Wirel. Commun. 23(4): 3795-3807 (2024)
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Toshi Ito, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi:
Characterization of Discrimination of Number of Signal Collision Sensors Using Spectral Fluctuation Caused by Frequency Offset in Physical Wireless Parameter Conversion Sensor Networks. ICAIIC 2024: 297-300
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Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
LBT-Based Resource Allocation Methods Utilizing Periodicity of Traffic in LPWAN. ICNC 2024: 1109-1113
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Toshi Ito, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi:
Novel Environmental Recognition Scheme with Mobile Data Gathering Station in Physical Wireless Parameter Conversion Sensor Networks. VTC Fall 2024: 1-6
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Takahiro Saraya, Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Takeo Fujii, Mai Ohta:
Received Signal Aided Implicit Node Clustering in LPWAN. VTC Spring 2024: 1-5
2023
[j35]
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Masafumi Oda, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi:
Position Estimation of Radio Source Based on Fingerprinting With Physical Wireless Parameter Conversion Sensor Networks. IEEE Access 11: 12843-12857 (2023)
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Ryuji Miyamoto, Osamu Takyu, Hiroshi Fujiwara, Koichi Adachi, Mai Ohta, Takeo Fujii:
Data Gathering Method with High Accuracy of Environment Recognition Using Mathematical Optimization in Packet-Level Index Modulation. IEICE Trans. Commun. 106(12): 1337-1349 (2023)
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Toshi Ito, Masafumi Oda, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi:
Three Level Recognition Based on the Average of the Phase Differences in Physical Wireless Parameter Conversion Sensor Networks and Its Effect to Localization with RSSI. Sensors 23(6): 3308 (2023)
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Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Resource Allocation for Periodic Traffic in Wireless Sensor Network. WCNC 2023: 1-6
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Ryogo Oya, Shinichiro Kakuda, Takeo Fujii, Osamu Takyu, Mai Ohta, Koichi Adachi:
Packet-Level Index Modulation Under Duty Cycle Constraints. WPMC 2023: 1-6
2022
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Kohei Tsurumi, Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Simple Clock Drift Estimation and Compensation for Packet-Level Index Modulation and Its Implementation in LoRaWAN. IEEE Internet Things J. 9(16): 15089-15099 (2022)
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Osamu Takyu, Gaku Kobayashi, Koichi Adachi, Mai Ohta, Takeo Fujii:
Estimation Based on Chirp Modulation for Desired and Interference Power and Channel Occupancy Ratio in LoRa. Sensors 22(11): 4140 (2022)
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Kosuke Suzuki, Koichi Adachi, Mai Ohta, Osamu Takyu, Takeo Fujii:
Flexible Index Mapping Scheme for Packet-Level Index Modulation. IEEE Wirel. Commun. Lett. 11(4): 703-706 (2022)
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Ryuji Miyamoto, Osamu Takyu, Hiroshi Fujiwara, Koichi Adachi, Mai Ohta, Takeo Fujii:
Performance Evaluation of Highly Efficient Information Collection Methods by Trend Analysis of Sensor Information Using Pre-learning. ICUFN 2022: 55-60
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Toshi Ito, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi:
High-Sensitivity Detection Method for Signals in PhyC-SN. ICUFN 2022: 61-66
2021
[j27]
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Koichi Adachi, Kohei Tsurumi, Aoto Kaburaki, Osamu Takyu, Mai Ohta, Takeo Fujii:
Packet-Level Index Modulation for LoRaWAN. IEEE Access 9: 12601-12610 (2021)
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Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Autonomous Decentralized Traffic Control Using Q-Learning in LPWAN. IEEE Access 9: 93651-93661 (2021)
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Kohei Natsume, Mai Ohta, Koichi Adachi, Osamu Takyu, Takeo Fujii:
DCT Compression Scheme for Wireless Sensor Information considering Spatial Correlation. ICOIN 2021: 192-196
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Gaku Kobayashi, Osamu Takyu, Koichi Adachi, Mai Ohta, Takeo Fujii:
Proposal of interference power occupancy estimation method using chirp demodulation. ICUFN 2021: 187-191
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Shinichiro Kakuda, Yudai Yamazaki, Keita Katagiri, Takeo Fujii, Osamu Takyu, Mai Ohta, Koichi Adachi:
Channel Allocation for LoRaWanConsidering Intra-System and Inter-System Interferences. VTC Fall 2021: 1-7
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Muying Chen, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Transmission Timing Control Using ACK Signal in LoRaWAN. WCNC 2021: 1-6
2020
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Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Autonomous Decentralized Transmission Timing Control in Wireless Sensor Network. APSIPA 2020: 1460-1465
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Gaku Kobayashi, Osamu Takyu, Koichi Adachi, Mai Ohta, Takeo Fujii:
Estimation of Desired power and Undesired power Using Chirp Demodulation and Evaluation of Accuracy. APSIPA 2020: 1513-1518
2019
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Naoki Aihara, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii:
Q-Learning Aided Resource Allocation and Environment Recognition in LoRaWAN With CSMA/CA. IEEE Access 7: 152126-152137 (2019)
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Yudai Yamazaki, Takeo Fujii, Osamu Takyu, Mai Ohta, Koichi Adachi:
Spectrum Sharing Exploiting Spectrum Database for LPWA. ICUFN 2019: 60-65
2018
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Hironori Godo, Osamu Takyu, Koichi Adachi, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa:
Experimental Evaluation of Interference Robustness for Frequency Spectrum Sharing in WLAN Systems. APSIPA 2018: 171-176
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Mai Ohta, Koichi Adachi, Naoki Aihara, Osamu Takyu, Takeo Fujii, Makoto Taromaru:
Measurement Experiments on 920 MHz Band for Spectrum Sharing with LoRaWAN. VTC Fall 2018: 1-5

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