研究業績/学術論文

  1. Ying Gao, Takeo Fujii,”A Kriging-Based Radio Environment Map Construction and Channel Estimation System in Threatening Environments,” IEEE Access, vol. 11, pp. 38136-38148, April 2023, doi: 10.1109/ACCESS.2023.3267973.
  2. 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, vol.23, no.6, pp.3308-3308, March 2023, doi.org/10.3390/s23063308
  3. Masafumi Oda, Osamu Takyu, Mai Ohta, Takeo Fujii and Koichi Adachi, “Position Estimation of Radio Source Based on Fingerprinting With Physical Wireless Parameter Conversion Sensor Networks,” in IEEE Access, vol. 11, pp. 12843-12857, Frb. 2023, doi: 10.1109/ACCESS.2023.3242611.
  4. Keita Katagiri, Koya Sato, Kei Inage, Takeo Fujii, “Radio Map Extrapolation Using Compensated Empirical CDF Under Interference-Limited Observations,” in IEEE Access, vol. 10, pp. 54936-54946, May 2022, DOI: 10.1109/ACCESS.2022.3174702.
  5. Ying Gao, Takeo Fujii, “An Improvement of Security Scheme for Radio Environment Map under Massive Attacking,” IEEE Access, vol.10, pp.45508-45521, April 2022. DOI: 10.1109/ACCESS.2022.3170478
  6. Shusuke Narieda, Takeo Fujii, “Transmit Power Allocation Schemes for Performance Improvement of Poor Conditioned End Devices in LPWAN,” IEEE Access,vol.10, pp.42778-42790, April 2022.DOI: 10.1109/ACCESS.2022.3168139
  7. Kohei Tsurumi, Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta, and Takeo Fujii, “Simple Clock Drift Estimation & Compensation for Packet-Level Index Modulation and its Implementation in LoRaWAN,” IEEE Internet of Things Journal, vol.9, no.16, pp.15089-15099, Aug. 2022. DOI: 10.1109/JIOT.2022.3148767
  8. Kosuke Suzuki, Koichi Adachi, Mai Ohta, Osamu Takyu, and Takeo Fujii, “Flexible Index Mapping Scheme for Packet-Level Index Modulation,” IEEE Wireless Commun. Lett. Jan. 2022, DOI:10.1109/LWC.2022.3140420
  9. Yoji Uesugi, Keita Katagiri, Koya Sato, Kei Inage, Takeo Fujii, “Clustering for Signal Power Distribution Toward Low Storage Crowdsourced Spectrum Database,” IEICE Trans. on Commun., vol.E104-B, no.10, pp.1237-1248, Oct. 2021. DOI: 10.1587/transcom.2020DSP0011
  10. Arata Takahashi, Fumihito Sasamori, Shiro Handa, Osamu Takyu, Takeo Fujii, Tomoaki Ohtsuki, “Overloaded wireless MIMO switching for secure wireless communication exchanging to untrusted relay,” IEICE Trans. on Commun., vol.E104-B, no.10, pp.1249-1259, Oct. 2021. DOI: 10.1587/transcom.2020DSP0005
  11. Keita Katagiri, Koya Sato, Kei Inage, and Takeo Fujii, “Dynamic radio map using statistical hypothesis testing,” IEEE Trans. Cogn. Commun. Netw., vol. 7, no. 3, pp. 752-766, Sept. 2021. DOI: 10.1109/TCCN.2020.3047867.
  12. Jose-Victor Rodriguez, Maria-Teresa Martinez Ingles, Jose-Maria Molina-Garcia-Pardo, Leandro Juan-Llacer, Takeo Fujii, Ignacio Rodriguez-Rodriguez, “UTD-PO formulation for the analysis of multiple-plateau diffraction when considering illumination from a Low Source,” IEEE Trans. on Antennas and Propagation, vol.69, no.7, pp. 4241-4245, July 2021. DOI: 10.1109/TAP.2020.3044377
  13. Katsuya Suto, Shinsuke Bannai, Koya Sato, Kei Inage, Koichi Adachi, and Takeo Fujii, “Image-Driven Spatial Interpolation with Deep Learning for Radio Map Construction, IEEE Wireless Communications Letters, vol. 10, no. 6, pp. 1222-1226, June 2021
  14. Kei Sakaguchi, Ryuichi Fukatsu, Tao Yu, Eisuke Fukuda, Kim Mahler, Robert Heath, Takeo Fujii, Kazuaki Takahashi, Alexey Khoryaev, Satoshi Nagata, Takayuki Shimizu, “Towards mmWave V2X in 5G and beyond to support automated driving,” IEICE Trans. on Commun., vol.E104-B, no.6, pp.587-603, June 2021. (Invited Paper)
  15. Aoto Kaburaki, Koichi Adachi, Osamu Takyu, Mai Ohta and Takeo Fujii, “Autonomous Decentralized Traffic Control Using Q-Learning in LPWAN,” IEEE Access, vol. 9, pp. 93651-93661, June 2021, DOI: 10.1109/ACCESS.2021.3093421.
  16. Koya Sato, Katsuya Suto, Kei Inage, Koichi Adachi, Takeo Fujii, “Space-frequency-interpolated radio map,” IEEE Trans. Veh. Technol., vol.70, no.1, pp.714-725, Jan. 2021.
  17. Koichi Adachi, Kohei Tsurumi, Aoto Kaburak, Osamu Takyu, Mai Ohta, Takeo Fujii, “Packet-Level Index Modulation for LoRaWAN,” IEEE Access vol.9 pp. 12601-12610, Jan. 2021. DOI: 10.1109/ACCESS.2021.3051933
  18. Yuki Nishio, Osamu Takyu, Hayato Soya, Keiichiro Shirai, Mai Ohta, Takeo Fujii, “Optimal Construction of Access Rate to Superior Channel in Rendezvous Channel Based on Channel-Occupancy Ratio,” IEICE Trans. Fundamentals, vol. E104-A, no. 1, pp. 243-252, Jan. 2021.
  19. Shusuke Narieda, Daiki Cho, Hiromichi Ogasawara, Kenta Umebayashi, Takeo Fujii, Hiroshi Naruse, “Theoretical Analyses of Maximum Cyclic Autocorrelation Selection Based Spectrum Sensing,” IEICE Trans. on Communications, vol.E103-B, no.12, pp.1462-1469, Dec. 2020.
  20. Ayumu Ueda, Takeo Fujii, “Packet Delivery Ratio Prediction for V2V Based on Radio Environment Map considering Hidden Terminal Problem,” International Journal of Intelligent Transportation Systems Research, vol. 19, pp.254-263, Nov. 2020. DOI:10.1007/s13177-020-00239-w
  21. Jose-Victor Rodriguez, Takeo Fujii, Leandro Juan-Llacer, Jose-Maria Molina-Garcia-Pardo, Ignacio Rodriguez-Rodriguez, “Plane-Wave UTD-PO Formulations for Multiple Diffraction by Trees and Buildings at Millimeter-wave Frequencies,” IEEE Antennas and Wireless Propagation Letters, vol.19, no.10, pp.1793-1797, Oct. 2020.
  22. Shusuke Narieda, Takeo Fujii, Kenta Umebayashi, “Energy Constrained Optimization for Spreading Factor Allocation in LoRaWAN,” Sensors, 20, 4417, Aug. 2020.
  23. Naoki Aihara, Koichi Adachi, Osamu Takyu, Mai Ohta, Takeo Fujii, “Generalized Interference Detection Scheme in Heterogeneous Low Power Wide Area Networks,” IEEE Sensors Letters, vol. 4, no. 6, pp. 1-4, June 2020.
  24. Hang Liu, Xu Zhu, Takeo Fujii, “Convolutional neural networks for pilot induced cyclostationarity based OFDM signals spectrum sensing in full duplex cognitive radio,” IEICE Trans. on Commun., vol.E103-B, no.1 pp.91-102, Jan. 2020.
  25. 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, vol.7, pp.152126-152137, Oct. 2019.
  26. Koya Sato, Kei Inage, and Takeo Fujii, “On the Performance of Neural Network Residual Kriging in Radio Environment Mapping, ” IEEE Access,Special Section on Artificial Intelligence for Physical-Layer Wireless Communications, vol. 7, no. 1, pp.94557-94568, July 2019.
  27. Koya Sato, Kei Inage, Takeo Fujii, “Modeling the Kriging-aided spatial spectrum sharing over log-normal channels,” IEEE Wireless Communications Letters. vol.8, no.3, pp749-752, June 2019.
  28. Osamu Takyu, Keiichiro Shirai, Mai Ohta, Takeo Fujii, “Adaptive channel assignment with predictions of sensor results and channel occupancy ratio in PhyC-SN, IEEE Access, vol.7, pp. 44645-44658, April 2019.
  29. Osamu Takyu, Keiichiro Shirai, Mai Ohta, Takeo Fujii, “ID Insertion and data tracking with frequency offset for physical wireless parameter conversion sensor networks,” Sensors, Feb. 2019.
  30. Hang Liu, Zhu Xu, Takeo Fujii, “A new classification-like scheme for　spectrum sensing using spectral correlation and stacked denoising　autoencoders,” IEICE Trans. on Commun., vol.E101-B, no.11, Nov. 2018.
  31. Rei Hasegawa, Keita Katagiri, Koya Sato, and Takeo Fujii, “Low storage,　but highly accurate measurement-based spectrum database via mesh　clustering,” IEICE Trans. Commun, vol.E101-B, no.10, pp. 2152-2161, Oct. 2018.
  32. Hayato Soya, Osamu Takyu, Keiichiro Shirai, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa, “A Fast Rendezvous Scheme with a Few Control Signals for Multi-Channel Cognitive Radio,” IEICE Transaction on Communications, vol.E101-B, no.8, pp1589-1601, July 2018.
  33. Keita Katagiri, Koya Sato, Takeo Fujii, “Crowdsourcing-assisted radio environment database for V2V communication,” Sensors, vol.18, no.4, 1183, April, 2018.
  34. 征矢隼人, 田久修, 白井啓一朗, 太田真衣, 藤井威生, 笹森文仁, 半田志郎, “コグニティブ無線における低複雑かつ高精度な占有率と遷移率測定法,” 電子情報通信学会和文誌B, vol.J101-B, no.2, pp.133-145, Feb. 2018. (DOI: 10.14923/transcomj.2017GTP0010)
  35. Shuang Fu, Guoyin Zhang, Takeo Fujii, “A heuristic method-based parallel cooperative spectrum sensing in heterogeneous network,” The Journal of Supercomputing, Jan., 2018. (DOI: 10.1007/s11227-018-2250-8)
  36. Koya Sato, Kei Inage, Takeo Fujii, “Frequency correlation of shadowing over TV bands in suburban area,” Electron. Lett., vol.54, no.1, pp.6-8, Jan. 2018.
  37. Osamu Takyu, Shohei Fujii, Youhei Akimoto, Mai Ohta, Takeo Fujii, Fumihito Sasamori, Shiro Handa, “Optimal cluster head selection and rotation of cognitive wireless sensor networks for simultaneous data gathering and long life system,” International Journal of Distributed Sensor Networks, vol.13, 12 pages, December 13, 2017.
  38. Xu Zhu, Takeo Fujii, “Modulation classification for cognitive radios using stacked denoising autoencoders.” Int. J. Satell. Commun. Network., vol.35, no.5, pp.517-531, Sept./Oct. 2017. (DOI: 10.1002/sat.1202)
  39. Takeo Fujii, Kenta Umebayashi, “Smart spectrum for future wireless world,” IEICE Trans. on Commun., vol.E100-B, no.9, pp.1661-1673, Sept. 2017.(DOI: 10.1587/transcom.2016PFI0014) (Invited Paper) (available here)
  40. Koji Kakinuma, Mai Ohta, Osamu Takyu, Takeo Fujii, “Fusion center controlled MAC protocol for physical wireless parameter conversion sensor networks (PHY-C SN),” IEICE Trans. on Commun, vol.E100-B, no.7, pp.1105-1114, July, 2017.(DOI: 10.1587/transcom.2016SCP0008)
  41. Tomokazu Moriyama, Taiki Nakayama, Takeo Fujii, “Intermittent interval feedback design for multi-stage wireless sensor networks,” Mobile Networks and Applications, April 2017. (DOI: 10.1007/s11036-017-0859-0)
  42. Koya Sato and Takeo Fujii, “Kriging-based interference power constraint: integrated design of the radio environment map and transmission power,” IEEE Trans. Cogn. Commun. Netw., vol.3, no.1, pp.13-25, March 2017. (available here)
  43. Massa Ndong and Takeo Fujii, “Handling cross-tier interference in underlay macrocell system for future small cell networks,” Journal of Communications and Networks. vol.19, no.1, pp.23-31, Feb. 2017.
  44. Tsubasa Suzuki, Takeo Fujii, “Joint routing and spectrum allocation for multi-hop inter-vehicle communication in cognitive radio networks,” International Journal of Intelligent Transportation Systems Research, vol.15, no.1, pp.39-49, Jan. 2017. (DOI:10.1007/s13177-015-0118-3)
  45. 木村 匠, 田久 修, 太田 真衣, 藤井 威生, 笹森 文仁, 半田 志郎, “スター型無線センサネットワークにおける周波数共用に適したチャネル共通化手法,” 映像情報メディア学会誌, vol.70, no.2, pp.J69-J73, Jan. 2016.
  46. Cong-Hoang Diem, Koya Sato, Takeo Fujii, “Cooperative distributed STBC transmission scheme for multi-hop V2V communications,” IEICE Trans. on Fundamentals, vol.E99-A, no.1, pp.252-262, Jan. 2016. (available here)
  47. Teruji Ide, Takeo Fujii, Mamiko Inamori, Yukitoshi Sanada, “Phase and gain imbalance compensation in low-IF receivers,” IEICE Trans. Commun., vol.E99-B, no.1, pp.211-223, Jan. 2016.
  48. Huifa Lin, Koji Ishibashi, Won-Yong Shin, Takeo Fujii, “A simple random access scheme with multilevel power allocation,” IEEE Commun. Letters, vol.19, no.12, pp.2118-2121, Dec. 2015.
  49. Koya Sato, Masayuki Kitamura, Kei Inage, and Takeo Fujii,”Measurement-based spectrum database for flexible spectrum management, “IEICE Trans. Commun., vol.E98-B, no.10, pp.2004-2013, Oct. 2015.(available here)
  50. Huifa Lin, Koji Ishibashi, Won-Yong Shin, and Takeo Fujii,“Decentralized Multilevel Power Allocation for Random Access, ”IEICE Trans. Commun., Vol.E98-B, No.10, pp.1978-1987, Oct.2015.(available here)
  51. Takashi Kosugi, Takeo Fujii, “Efficient spectrum sharing with avoiding spatial fragmentation of white space,” ICT Express, vol.1, no.2, pp.55-58, Sept. 2015. (DOI:10.1016/j.icte.2015.09.002)(available here)
  52. Massa Ndong, Takeo Fujii, “Relay transmit power allocation for distributed-spacetime block code cognitive small cell networks, ” IET Communications, vol 9, no.14, pp.1691-1698, Sept. 2015. (DOI 10.1049/iet-com.2014.1093)
  53. Tomomi Endou, Shunta Sakai, Takeo Fujii, “Information gathering for wireless sensor networks with information converting to wireless physical parameters,” IEICE Trans. on Commun., vol.E98-B, no.6, pp. 1745-1345, June 2015.(available here)
  54. Kazuya Tsukamoto, Yuji Oie, Haris Kremo, Onur Altintas, Hideaki Tanaka, Takeo Fujii, “Implementation and performance evaluation of distributed autonomous multi-hop vehicle-to-vehicle communications over TV white space,” Mobile Networks and Applications, vol.20, no.2, pp.203-219, April 2015. (DOI 10.1007/s11036-015-0576-5)
  55. Ryo Myoenzono, Osamu Takyu, Keiichiro Shirai, Takeo Fujii, Mai Ohta, Fumihito Sasamori, Shiro Handa, “Data tracking and effect of frequency offset to simultaneous collecting method for wireless sensor networks,” International Journal of Distributed Sensor Networks, March 2015. (DOI:10.1155/2015/946760)
  56. Osamu Takyu, Takayuki Yamakita, Takeo Fujii, Mai Ohta, Fumihito Sasamori, Shiro Handa, “Optimization of learning time for learning-assisted rendezvous channel in cognitive radio system,” IEICE Transaction on Commun., vol.E98-B, no.2, pp.360-369, Feb. 2015.(available here)
  57. Shuta Kako, Takeo Fujii, Osamu Takyu, “Joint resource allocation with interference constraint for cognitive multi-hop wireless networks,” IEICE Trans. on Fundametals, vol.E98-A, no.2, pp.569-577, Feb. 2015.(available here)
  58. Masafumi Moriyama, Takeo Fujii, “Novel synchronization and BER improvement method for public safety mobile communication systems employing heterogeneous cognitive radio,” IEICE Trans. on Commun., vol.E98-B, no.4, pp.736-745, April 2015.(available here)
  59. Massa Ndong,Takeo Fujii,”Cross-tier interference management with a distributed antenna system for multi-tier cellular networks,” EURASIP Journal on Wireless Communications and Networking,vol. 2014:83,May. 2014 (DOI: 10.1186/1687-1499-2014-73)
  60. 若尾 悠太,田久 修,藤井威生,笹森 文仁,半田 志郎,”コグニティブ無線システムのための時間変化に追従可能な高精度占有率測定法,” 映像情報メディア学会誌,vol.68,no.5,pp.213-216,2014.5.
  61. 森山雅文,藤井威生,”ヘテロジニアス型コグニティブ無線を適用した公共用移動通信システムにおけるビタビ復号の理論解析,” 電子情報通信学会和文誌B,vol.J97-B,no.2,pp.182-191,2014.2.(available here)
  62. Kei Inage,Takeo Fujii,Kazushi Muraoka,Masayuki Ariyoshi,“Capacity conservation ratio: a novel interference constraint for spectrum sharing,” Transactions on Emerging Telecommunications Technologies,vol.24,no.7-8,pp.672-682,Nov. 2013.
  63. Shuta Kako,Takeo Fujii,Osamu Takyu,”Dynamic Spectrum Sharing for OFDMA-Based Multi-hop Cognitive Radio Networks with Priority,” Wireless Personal Communications,Aug. 2013. (DOI:10.1007/s11277-013-1345-z)
  64. Sarenna Bao,Takeo Fujii,”Learning-based p-persistent CSMA for secondary user of cognitive radio networks,” International Journal of Space-Based and Situated Computing,Vol.3,No.2,pp.102 – 112,Aug. 2013.(DOI: 10.1504/IJSSC.2013.056028)
  65. 堀江駿太,田久修,藤井威生,楳田洋太郎,”スロットベースのランダムアクセス型プライマリシステムと周波数共有するセカンダリシステムのキャリアセンス制御と干渉マージンの設計,” 電子情報通信学会和文誌B,vol.J96-B,no.7,pp.729-741,July 2013.
  66. Onur Altintas,Yutaka Ihara,Haris Kremo,Hideaki Tanaka,Masaaki Ohtake,Takeo Fujii,Chikara Yoshimura,Keisuke Ando,Kazuya Tsukamoto,Masato Tsuru,Yuji Oie,”Field tests and indoor emulation of distributed autonomous multi-hop vehicle-to-vehicle communications over TV white space,”ACM SIGMOBILE Mobile Computing and Communications Review,vol.16 no.4,pp.54-57 Oct. 2012. (DOI: 10.1145/2436196.2436221)
  67. Daeyeon Kim,Takeo Fujii,Kyesan Lee,”A Power Allocation Algorithm for Maximizing Total Utility over an MBSFN,” IEEE Wireless Communications Letters,vol.2,no.3,pp.283-286,June 2013. (DOI:10.1109/WCL.2013.022213.130017)
  68. Hailan Peng,Takeo Fujii,”Distributed Resource Allocation for Multi-cell Cognitive Radio Networks based on Intra-cell Overlay and Inter-cell Underlay Spectrum Sharing,” IEICE Trans. on Commun. vol.E96-B,no.6,pp.1566-1576,June 2013.
  69. Daeyeon Kim,Takeo Fujii,Kyesan Lee,”A Resource Allocation Algorithm for OFDM-based Cellular System to Serve Unicast and Multicast Services,” EURASIP Journal on Wireless Communications and Networking,2013,2013:41,Feb. 2013.
  70. 木村孝政,藤井威生,田久修,”TCP性能向上のためのマルチホップコグニティブネットワーク向けMACプロトコルの提案,” 電子情報通信学会論文誌B,vol.J96-B,no.3,pp.356-365,March 2013.
  71. Shamsad Parvin,Takeo Fujii,”Radio environment aware stable routing scheme for multi-hop cognitive radio network,” IET Networks,Vol. 1,no. 4,pp.207?216,Dec. 2012.(DOI: 10.1049/iet-net.2012.0103)
  72. Mai Ohta,Takeo Fujii,Kazushi Muraoka,Masayuki Ariyoshi,”Cooperative Sensing with Distributed Pre-Detection for gathering Sensing Information on Shared Primary Spectrum,” IEICE Trans. on Fundamentals,vol.E95-A,no.11,pp.1980-1990,Nov. 2012.
  73. Kazuhisa Okamoto,Mai Ohta,Kei Inage,Takeo Fujii,Masayuki Ariyoshi,”Spectrum sharing method for secondary systems using frequency priority table to reduce inter-secondary interference,” Analog Integrated Circuit Signal Processing,DOI:10.1007/s10470-012-9969-6,vol.73,pp.503-516,Oct. 2012.
  74. Daeyeon Kim,Takeo Fujii,Kyesan Lee,”Modulation level allocation for MGS streaming over a multihop wireless channel,” EURASIP Journal on Wireless Communications and Networking,2012:105,March 2012.
  75. Hailan Peng,Takeo Fujii,”Joint cross-layer resource allocation and interference avoidance with QoS support for cognitive radio systems,” EURASIP Journal on Wireless Communications and Networking,2012:41,Feb. 2012.
  76. Yuji Okamoto,Takeo Fujii,”Multi-user Scheduling Method Considering Fairness and Mitigation of Multi-cell Interference for Multi- hop Cellular System,” IEICE Trans. on Fundametals,vol.E94-A,no.12,pp.2746-2752,Dec. 2011.
  77. Shamasad Parvin,Takeo Fujii,”Hidden Node Aware Routing Method Using High Sensitive Device for Multi hop Wireless Mesh Network,” EURASIP Journal on Wireless Communications and Networking,2011:114,Sept. 2011.
  78. Takeo Fujii,Osamu Takyu,”MAC Layer Importance for Multimedia Services in Future Cognitive Radio World,”IEEE Commun. Society Multimedia Commun. Tech. Committee (MMTC) E-Letter,vol. 6,No. 3,pp. 54-57,March 2011.
  79. Norihiko Sato,Takeo Fujii,“Multi-antenna utilization scheme to prevent packet congestion in wireless mesh netowork,” IEICE Trans. on Commun.,vol.E93-B,no.11,Nov. 2010.
  80. Chinnapat Sertthin,Takeo Fujii,Osamu Takyu,Tomoaki Ohtsuki,Masao Nakagawa,”Multi-band Received Signal Strength Fingerprinting Based Indoor Location System,” IEICE Trans. on Commun. vol.E93-B,no.8,pp.1993-2003,Aug. 2010.
  81. Kazushi Muraoka,Masayuki Ariyoshi,Takeo Fujii,”A Robust Spectrum Sensing Method Based on Maximum Cyclic Autocorrelation Selection for Dynamic SpectrumAccess,” IEICE Trans. on Commun. vol.E92-B,no.12,pp.3635-3643,Dec. 2009
  82. Mai Ohta,Takeo Fujii,Kazushi Muraoka,Masayuki Ariyoshi,”A novel method for information gathering by using orthogonal narrowband signal for cooperative sensing in cognitive radio,” IEICE Trans. on Commun.,vol.E92-B,no.12,pp.3625-3634,Dec. 2009.
  83. 長谷川圭吾,藤井威生,梅林健太,神谷幸宏,鈴木康夫,”高速マルチホップ無線ネットワークのためのストリーム数適応切換型中継,” 電子情報通信学会論文誌B,vol.J92-B,no.6,pp.909-920,June 2009.
  84. Y. Karasawa,T. Kumagai,A. Takemoto,T. Fujii,K. Ito,and N. Suzuki,”Experiment on Synchronous Timing Signal Detection from ISDB-T Terrestrial Digital TV Signal with Application to Autonomous Distributed ITS-IVC Network,” IEICE Trans. Commun.,vol. E92-B,no.1,pp.296-305,Jan. 2009.
  85. 藤井威生,”電力制限による与干渉回避を行うマルチチャネルマルチホップコグニティブ無線ネットワーク,” 電子情報通信学会論文誌B,vol.J91-B,no.11,pp.1369-1379,Nov. 2008.
  86. Tomofumi Sakaguchi,Yukihiro Kamiya,Takeo Fujii,Yasuo Suzuki,”Forward interference avoidance in ad hoc communications using adaptive array antennas,” IEICE Trans. on Commun.,vol.E91-B no.9,pp.2940-2947,Sept. 2008.
  87. Miho Kozuma,Atsushi Sasaki,Yukihiro Kamiya,Takeo Fujii,Kenta Umebayashi,Yasuo Suzuki,”A new blind adaptive array antenna based on CMA criteria for M-Ary/SS signals suitable for software defined fadio architecture,” IEICE Trans. on Commun.,vol.E91-A no.8,pp.1982-1989,Aug. 2008.
  88. Keigo Hasegawa,Takeo Fujii,Kenta Umebayashi,Yukihiro Kamiya,and Yasuo Suzuki,”Dialogue-based broadcasting protocol for wireless ad hoc networks,IEICE Trans. on Fundamentals,vol.E91-A,no.7,pp.1642-1651,July 2008.
  89. Kei Takayama,Yukihiro Kamiya,Takeo Fujii,and Yasuo Suzuki,”A new blind 2D-RAKE receiver based on CMA criteria for spread spectrum systems suitable for software defined radio architecture,” IEICE Trans. Commun,vol.E91-B,no.6,pp.1906-1913,June 2008.
  90. Nguyen Tran Khoa,Takeo Fujii,Kenta Umebayashi,Yukihiro Kamiya,Yasuo Suzuki,”Frequency sharing hotspot communication under uplink multi-carrier CDMA cellular system,” The Journal Wireless Communications and Mobile Computing,(Printing)
  91. 鷹野 智,藤井 威生,梅林 健太,神谷 幸宏,鈴木 康夫,”アダプティブアレーアンテナとMACプロトコルを連携させたアドホック無線ネットワーク,” 電子情報通信学会論文誌 B vol.J91-B no.5 pp.550-557,2008-5.
  92. Hiromasa Uchiyama,Kenta Umebayashi,Takeo Fujii,Fumie Ono,Kei Sakaguchi,Yukihiro Kamiya,and Yasuo Suzuki,”Study on soft decision based cooperative sensing for cognitive radio networks,” IEICE Trans. Commun,,vol.E91-B,no.1,pp.95-101,Jan. 2008.
  93. Takeo Fujii,Yukihiro Kamiya and Yasuo Suzuki,”Multi-stage RLS subcarrier combining method for uplink quasi-synchronous MC-CDMA,” IEEE Trans. on Vehicular Technology,vol.56,no.6,pp.3739-3748,Nov. 2007.
  94. Takeo Fujii,Erina Kojima,Yukihiro Kamiya and Yasuo Suzuki,”STBC distributed ARQ dcheme for OFDM ad-hoc wireless networks,” IEICE Trans. on Fundamentals.,vol.E90-A,pp.1323-1332,July 2007.
  95. 鈴木 宏幸,藤井 威生,神谷 幸宏,鈴木 康夫,“パケット通信システムのためのMMSE/MSN切替型アダプティブアレーアンテナ,”電子情報通信学会論文誌 B,vol.J89-B,no.11,pp.2155-2158,2006-11.
  96. 高橋 政行,藤井 威生,神谷 幸宏,鈴木 康夫,“MMSE/EGC適応切替型上等間隔アダプティブアレーアンテナ,”電子情報通信学会論文誌 B,vol.J89-B,no.9,pp.1717-1724,2006-9.
  97. Takeo Fujii,Yukihiro Kamiya and Yasuo Suzuki,“Multi-stage RLS OFDM adaptive array antenna with short pilot symbols,” IEICE Trans. on Commun.,vol.E89-B,no.5,pp.1589-1597,May,2006.
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