[Japanese]

Greetings †

Thank you for visiting my web page.

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Personal Information †

ohta_face_20150328.jpg
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Professional Society Memberships †

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Professional Social Activities †

  • IEICE Communications Society
    • Associate Editor of Special Section on Special Section on Network and System Technologies for Sustainable Society (2013.3-)
    • Associate Editor of Special Section on Emerging Technologies and Applications for Ad Hoc and Wireless Mesh Networks (2011.5-)
    • Editor and Preparatory Committee of IEICE Communications Express (2011.5-2015.6)
    • Editor of Transactions on Communications (EB) (2008.5-2010.5)
    • Associate Editor of IEICE Transactions on Communications (EB) (2003.5-2006.5)
    • Committee of IEICE Technical Committee on Network Systems (2006.5.27-2011.5)
    • Committee of IEICE Technical Committee on Communication Systems (2001.5-2005.5)
    • Associate Editor of IEICE Special Section on Emerging Technologies for Practical Ubiquitous and Sensor Networks (2008.1.18 - 2008.11.1)
    • Associate Editor of IEICE Special Section on Networking Technologies for Seamless Communication Services (Japanese) (2005.9.1 - 2006.8.1)
  • IEICE Engineering Science Society
    • Associate Editor of IEICE Special Section on Multi-dimensional Mobile Information Networks (2009.9 - 2010.10)
    • Associate Editor of IEICE Special Section on Multi-dimensional Mobile Information Networks (2008.8 - 2009.7)
    • Associate Editor of IEICE Special Section on Multi-dimensional Mobile Information Networks (2007.8 - 2008.7)
    • Secretary of IEICE Special Section on Multi-dimensional Mobile Information Networks (2006.8 - 2007.7)
    • Associate Editor of IEICE Special Section on Papers Selected from ITC-CSCC2003 (the 2003 International Technical Conference on Circuits/Systems, Computers and Communications)(2003.10 - 2004.6)
  • IEEE
    • Technical Program Committee of IEEE ICC2012 WS FutureNet?
    • Technical Program Committee Member IEEE VTC2012-Spring
    • Technical Program Committee of the IEEE 16th International Conference on Computer Communications and Networks (ICCCN 2007), QoS Control and Traffic Modeling Symposium, August 13-16, 2007, Turtle Bay Resort, Honolulu, Hawaii, USA
    • Technical Program Committee of the 2005 IEEE Workshop on High Performance Switching and Routing (HPSR2005), May 12-14, 2005, Hong Kong
  • IPSJ
  • ARIB
    • Committee of Maritime Wireless Ad-hoc Networks (2007.11-2010.3)
  • JARI
    • Committee of Feasible Study on Network Simulator for Safty Driving Support Systems (2008.8.7-2009.3.31)
  • Miscellaneous
    • Program Committee of The 2004 International Workshop on Mobile Systems, E-commerce and Agent Technology (MSEAT'2004), Sep. 8-10, 2004, San Francisco Bay, California, USA
    • Technical Program Committee of the 2005 International Workshop on Wireless and Sensor Networks, June 14-17, 2005, Oslo, Norway
    • Technical Program Committee of the 2006 International Workshop on Wireless and Sensor Networks, August 14-18, 2006, Columbus, Ohio, USA
    • Technical Program Committee ofThe Fifth International Conference on Mobile Computing and Ubiquitous Networking (ICMU2010), April 26-28, 2010, Seattle, USA
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Research Interests †

  • Sensor Networks
  • Mobile Ad-hoc Networks
  • Overlay Networks
  • Wireless Access Networks
  • Network Performance Evaluation
  • Network Simulation
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Grants †

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Publications †

Journal/Transactions (Refereed)

  1. Takahiro Iwami, Irda Roslan, Yumi Takaki, Kyoko Yamori, Chikara Ohta, and Hisashi Tamaki, "Utility-based Distributed Association Control Scheme with User Guidance for IEEE802.11 Wireless LANs," IEICE Transactions on Communications, vol. E98-B, no. 8, pp. 1700-1714, August 2015.(filePDF Copyright(C)2015 IEICE)
  2. Kosuke Teshima, Takashi Matsuda, Bing Zhang, Tsutomu Inamoto, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "A Study on Input-selection-based Power Supply Method Considering Standing Wave for Two-dimensional Communication Systems," IEICE Transactions on Communications, vol. J96-B, no. 12, pp. 1342-1354, December 2013.
  3. Akindele Segun Afolabi, Erdenebileg Munkhbat, Yumi Takaki, Chikara Ohta, Hisashi Tamaki, Yoshizo Tanaka, Takashi Yamamoto, and Yoji Okada, "Fair Partitioning of the Downlink Resources of an OFDMA-based Multi-user Multi-tier Cellular Network Using Fractional Frequency Reuse," IEICE Transactions on Communications, vol. E95-B, no. 10, pp. 3353¡Ý3357, October 2012.
  4. Takashi Matsuda, Shintaro Izumi, Yasuharu Sakai, Takashi Takeuchi, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Divided Static Random Access Memory for Data Aggregation in Wireless Sensor Nodes," IEICE Transactions on Communications, vol. E95-B, no. 1, pp. 178-188, January 2012.
  5. Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "Proposal and Evaluation of Broadcast Schemes using RAD Control based on Distance Information in Mobile Ad-hoc Networks," IEICE Transactions on Communications, vol. J94-B, no. 6, pp. 765-770, June 2011.
  6. Akindele Segun Afolabi, Chikara Ohta, and Hisashi Tamaki, "A Novel Co-operative Channel Assignment Scheme for Indoor Base Stations," GSTF International Journal on Computing (JoC), vol. 1, no. 2, pp. 205-210, February 2011.
  7. Tsutomu Inamoto, Chikara Ohta, Hisashi Tamaki, and Hajime Murao, "An Approach Employing Polysemous Rules to Complement Legacy Rules for the Elevator Operation," Journal of Advanced Mechanical Design,Systems, and Manufacturing, vol. 4, no. 3, pp. 651-663, July 2010.
  8. Takashi Matsuda, Takashi Takeuchi, Takefumi Aonishi, Masumi Ichien, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A Power-Variation Model for Sensor Node and the Impact against Life Time of Wireless Sensor Networks," IEICE Electronics Express, vol. 7, no. 3, pp. 197-202, March 2010.
  9. Shintaro Izumi, Takashi Takeuchi, Takashi Matsuda, Hyeokjong Lee, Toshihiro Konishi, Koh Tsuruda, Yasuharu Sakai, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A 58-uW Single-Chip Sensor Node Processor with Communication Centric Design," IEICE Transactions on Electronics, vol. E93-C, no. 3, pp. 261-269, March 2010.
  10. Tsutomu Inamoto, Chikara Ohta, Hisashi Tamaki, and Hajime Murao, "Decreasing Computational Cost of Dynamic Programmings Based on Symbolic Binary Coding Scheme by Algebraic Computation," IEEJ Transactions on Electronics, Information and Systems, vol. 129, no. 7, pp. 1237-1245, July 2009.
  11. Augusto Foronda, Chikara Ohta, and Hisashi Tamaki, "Scheduling Algorithm to Provide QoS over a Shared Wireless Link," IEICE Transactions on Communications, vol. E92-B, no. 6, pp. 2160-2167, June 2009.
  12. Takashi Takeuchi, Shinji Mikami, Hyeokjong Lee, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A 433-MHz Rail-to-Rail Voltage Amplifier with Carrier Sensing Function for Wireless Sensor Networks," IEICE Transactions on Electronics, vol. E92-C, no. 6, pp. 815-821, June 2009.
  13. Takashi Takeuchi, Yu Otake, Masumi Ichien, Akihiro Gion, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Cross-Layer Design for Low-Power Wireless Sensor Node using Wave Clock," IEICE Transactions on Communications, vol. E91-B, no. 11, pp. 3480-3488, November 2008.
  14. Shintaro Izumi, Takashi Takeuchi, Takashi Matsuda, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Counter-based Broadcasting with Hop Count Aware Random Assessment Delay Extension for Wireless Sensor Networks," IEICE Transactions on Communications, vol. E91-B, no. 11, pp. 3489-3498, November 2008.
  15. Augusto Foronda, Chikara Ohta, and Hisashi Tamaki, "Scheduling Algorithms for Maximizing Throughput with Zero-Forcing Beamforming in a MIMO Wireless System," IEICE Transactions on Communications, vol. E91-B, no. 6, pp. 1952-1961, June 2008.
  16. Takashi Matsuda, Masumi Ichien, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Data Transmission Scheduling based on RTS/CTS Exchange for Periodic Data Gathering Sensor Networks," IEICE Transactions on Communications, vol. E90-B, no. 12, pp. 3410-3417, December 2007.
  17. Augusto Foronda, Chikara Ohta, Masahiko Yoshimoto, and Yoji Okada, "Service Interval Optimization with Delay Bound Guarantee for HCCA in IEEE 802.11e WLANs," IEICE Transactions on Communications, vol. E90-B, no. 11, pp. 3158-3169, November 2007.
  18. Shinji Mikami, Takafumi Aonishi, Hironori Yoshino, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "Aggregation Efficient-Aware Greedy Incremental Tree Routing for Wireless Sensor Networks," IEICE Transactions on Communications, vol. E89-B, no. 10, pp. 2741-2751, October 2006.
  19. Takahiro Harada, Chikara Ohta, and Masakatu Morii, "Improvement of TCP Throughput for IEEE 802.11 DCF in Wireless Multi-hop Networks," IEICE Transactions on Communications, vol. J85-B, no. 12, pp. 2198-2208, December 2002.
  20. Chikara Ohta and Masakatu Morii, "Moment Calculating Algorithm for Busy-period of Discrete-time Finite-capacity M/G/1 Type Queue," IEICE Transactions on Communications, vol. E85-B, no. 1, pp. 293-304, January 2002.
  21. Yoshiaki Shiraishi, Yoshinori Shirakawa, Chikara Ohta, Naoto Sone, and Masakatu Morii, "Construction of Regional HTTP-IXP Using Proxy Cache Server and Its Experiment," ISCIE Trans. of The Institute of Systems, Control, and Information Engineers, vol. 13, no. 4, pp. 168-178, April 2000.
  22. Chikara Ohta, Tetsuya Takine, and Masayuki Murata, "Bounded-Delay and Loss-Free Guarantees for Real-Time Video in Integrated Services Packet Networks," International Journal of Communication Systems, vol. 13, no. 1, pp. 51-77, February 2000.
  23. Shinya Tojo, Fumio Ishizaki, and Chikara Ohta, "Phase Assignment Algorithm Based on Traffic Measurement for Real-time MPEG Sources in ATM Networks," IEICE Transactions on Communications, vol. E82-B, no. 12, pp. 2073-2080, December 1999.
  24. Ishizaki Fumio and Chikara Ohta, "Phase Assignment Control for Periodic and Bursty Sources in ATM Networks," IEICE Transactions on Communications, vol. E82-B, no. 7, pp. 1064-1068, July 1999.
  25. Chikara Ohta and Fumio Ishizaki, "Output Process of Shaper and Switch with Self-similar Traffic in ATM Networks," IEICE Transactions on Communications, vol. E81-B, no. 10, pp. 1936-1940, October 1998.
  26. Masakatu Morii, Yoshiaki Shiraishi, Naoto Sone, Ken-ichi Iwata, Chikara Ohta, and Takahiro Oie, "A Packet Distribution Experiment of Still and Moving Images over the Internet - The Project of Awadance Internet Live '96 and '97," Trans. of the Institute of Image Electronics Engineers of Japan, vol. 27, no. 3, pp. 253-262, June 1998.
  27. Yoshiaki Ueno, Chikara Ohta, Miki Yamamoto, Hiromi Okada, and Hiromasa Ikeda, "Rate-Based Congestion Control with Little Influence of the Number of Virtual Channels," IEICE Transactions on Communications, vol. J79-B-I, no. 8, pp. 585-586, August 1996.
  28. Chikara Ohta, Katsunori Sato, and Yoshikuni Onozato, "Comparison of Cell Transfer Quality Control for Multimedia Traffic in ATM Networks," IEICE Transactions on Communications, vol. E80-B, no. 8, pp. 1273-1277, August 1997.
  29. Ami Kanazawa, Chikara Ohta, Yoshikuni Onozato, Tukasa Iwama, and Shigetoshi Yoshimoto, "Performance Study of Channel Reservation for Ahead Cells in Street Micro-cellular Systems," IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, vol. E79-A, no. 7, pp. 990-996, July 1996.
  30. Chikara Ohta, Miki Yamamoto, and Hiromasa Ikeda, "Feedback Type Rate-Based Congestion Control with Adaptive Parameter," IEICE Transactions on Communications, vol. J78-B-I, no. 11, pp. 642-651, November 1995.
  31. Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "Analysis of a Discrete-Time Finite Buffer Single Server Queue with Correlation in Both Arrival Process and Service Process," IEICE Transactions on Communications, vol. J77-B-I, no. 8, pp. 493-505, August 1994.
  32. Noriaki Kamiyama, Chikara Ohta, Hideki Tode, Miki Yamamoto, and Hiromi Okada, "A Virtual STM Transmission Method Based on ATM Network," IEICE Transactions on Communications, vol. J77-B-I, no. 5, pp. 353-365, May 1994.
  33. Hideki Tode, Noriaki Kamiyama, Chikara Ohta, Miki Yamamoto, and Hiromi Okada, "A Proposal of Quasi-STM Transmission Method in ATM-Based Network," IEICE Transactions on Communications, vol. E76-B, no. 7, pp. 719-722, July 1993.

International Conference (Refereed)

  1. Hiroaki Minami, Atsushi Kinoshita, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "Performance Evaluation of Emergency Vehicle Travel Support System Based on V2V Communications," Proc. International Conference on Electronics, Information and Communication, pp. 287-288, January 2015.
  2. Keisuke Fujita, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "Side Trip Multi-path Routing Protocol for Spatial Node Failure Tolerance in Data-gathering WSNs," Proc. IEEE the 11th Consumer Communications and Networking Conference (CCNC2014), pp. , January 2014.
  3. Ke Cao, Atsushi Kinoshita, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "Efficient Urban Broadcast Protocol for V2V Communications with Relay Control," Proc. IEEE Vehicular Networking Conference (VNC), pp. 23-30, December 2013.
  4. Hiroki Kawabata, Takaki Onizuka, Yumi Takaki, Chikara Ohata, and Hisashi Tamaki, "A Study on Cache Suppression Control according to Content Popularity for In-network Guidance," Proc. ACM the 9th International Conference on Emerging Networking Experiments and Technologies (CoNEXT2013), Student Workshop, pp. 39-41, December 2013.
  5. Takahiro Iwami,Yumi Takaki, Kyoko Yamori, Chikara Ohta, and Hisashi Tamaki, "Distributed Association Control Considering User Utility and User Guidance in IEEE802.11 Networks," Proc. IEEE the 24th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC2013), pp. 2130-2135, September 2013.
  6. Tsutomomu Inamoto, Chikara Ohta, and Hisashi Tamaki, "Gradually Resolving Procedures by a Trip-based Integer Programming to Optimize Elevator Operations," Proc. the 6th International Conference on Soft Computing and Intelligent Systems and the 13th International Symposium on Advanced Intelligent Systems , pp. 626-632, November 2012.
  7. Hiroki Kawabata, Kensuke Hashimoto, Tsutomu Inamoto, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "Content/Location Mapping with Cache-location Resolution for In-network Guidance," Proc. the Fourth International Conference on Advances in Future Internet, pp. 1-6, August 2012.
  8. Akindele Segun Afolabi, Erdenebileg Munkbat, Chikara Ohta, and Hisashi Tamaki, "Fair Resource Partitioning between Cell-center and Cell-edge of FFR-based Multi-tier Wireless Access Networks," Proc. the 7th International Conference on Wireless Communications, Networking and Mobile Computing, pp. CD-ROM, September 2011.
  9. Kensuke Hashimoto, Yumi Takaki, Chikara Ohta, and Hisashi Tamaki, "In-network Hop-aware Query Induction Scheme for Implicit Coordinated Content Caching," Proc. the Third International Conference on Advances in Future Internet, AFIN2011, pp. 69-73, August 2011.
  10. Akindele Segun Afolabi, Chikara Ohta, and Hisashi Tamaki, "Macrocell Batch Resource Allocation for a Closed Access Femto-Macro Cellular Wireless Network," Proc. the Third IEEE International workshop on Indoor and Outdoor Femto Cells, pp. 407-412, May 2011.
  11. Akindele Segun Afolabi, Chikara Ohta, and Hisashi Tamaki, "A Base Station Co-operation Protocol for Indoor Base Stations," Proc. Annual International Conference on Network Technologies & Communications (NTC2010), pp. N37-42, November 2010.
  12. Shintaro Izumi, Takashi Takeuchi, Takashi Matsuda, Hyeokjong Lee, Toshihiro Konishi, Kou Tsuruda, Yasuharu Sakai, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "A 58-uW Sensor Node LSI with Synchronous MAC Protocol," Proc. 2010 Asia-Pacific Radio Science Conference, pp. CD-ROM, September 2010.
  13. Takashi Takeuchi, Shintaro Izumi, Takashi Matsuda, Hyeokjong Lee, Toshihiro Konishi, Koh Tsuruda, Yasuhiro Sakai, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A Single-Chip Sensor Node LSI with Synchronous MAC Protocol and Divided Data-Buffer SRAM," Proc. 2009 International SoC Design Conference, pp. 202-207, November 2009.
  14. Takashi Takeuchi, Shintaro Izumi, Takashi Matsuda, Hyeokjong Lee, Yu Otake, Toshihiro Konishi, Koh Tsuruda, Yasuharu Sakai, Hidehiro Fujiwara, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "A 58-¦ÌW Single-Chip Sensor Node Processor Using Synchronous MAC Protocol," Proc. 2009 Symposia on VLSI Technology and Circuits , pp. 290-291, June 2009.
  15. Yusuke Kato, Yiyuan Diao, Pham Nguyen Tu Nhy, Ken-ichiro Yagura, Takayuki Kitada, Kazuhiro Yamaguchi, Yumi Takaki, Mitsuhiro Kuwano, and Chikara Ohta, "Implementation and Experiment of Publish/Subscribe System on Wireless Mesh Networks -Word-mouth Information Distribution Service -," Proc. the Second International Conference on Advances in Mesh Networks, pp. 103-108, June 2009.
  16. Nhy Nguyen Tu Pham, Yiyuan Diao, Yusuke Kato, Kenichiro Yagura, Yumi Takaki, and Chikara Ohta, "A Simple Approach on Mitigating the Gray Zone Effect to Improve Throughput in IEEE802.11 Based Ad-Hoc Network," Proc. the Second International Conference on Advances in Mesh Networks, pp. 7-11, June 2009.
  17. Augusto Foronda, Chikara Ohta, and Hisashi Tamaki, "An Enhanced Proportional Fair Algorithm to Provide QoS over a Shared Wireless Link," Proc. the 2008 International Conference on Advanced Technologies for Communications (ATC2008), pp. 106-109, October 2008.
  18. Shintaro Izumi, Takashi Matsuda, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Hop Count Aware Broadcast Algorithm with Random Assessment Delay Extension for Wireless Sensor Networks," Proc. 7th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT 2008), pp. 30-35, April 2008.
  19. Takashi Matsuda, Shintaro Izumi, Takashi Takeuchi, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Impact of Divided Static Random Access Memory Considering Data Aggregation for Wireless Sensor Networks," Proc. 7th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT 2008), pp. 130-134, April 2008.
  20. Ken-ichiro Yagura, Yusuke Kato, Takayuki Kitada, Kazuhiro Yamaguchi, Yumi Takaki, Mitsuhiro Kuwano, and Chikara Ohta, "Implementation of Publish/Subscribe System on Wireless Mesh Networks -Word-mouth Information Distribution Service-," Proc. 7th Asia-Pacific Symposium on Information and Telecommunication Technologies (APSITT 2008), pp. 168-172, April 2008.
  21. Augusto Foronda, Chikara Ohta, and Hisashi Tamaki, "A Fair Scheduling Algorithm to Improve Stability Region with Zero-Forcing Beamforming," Proc. IEEE International Symposium on Wireless Communication Systems 2007 (ISWCS2007), pp. 814-818, October 2007.
  22. Takashi Matsuda, Takafui Aonishi, Takashi Takeuchi, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Multipath Routing Using Isochronous Medium Access Control with Multi Wakeup Period for Wireless Sensor Networks," Proc. IEEE International Symposium on Wireless Communication Systems 2007 (ISWCS2007), pp. 718-721, October 2007.
  23. Shintaro Izumi, Takashi Matsuda, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Improvement of Counter-based Broadcasting by Random Assessment Delay Extension for Wireless Sensor Networks," Proc. International Conference on Sensor Technologies and Applications (SENSORCOMM 2007), pp. 76-81, October 2007.
  24. Yu Otake, Masumi Ichien, Takashi Takeuchi, Akihiro Gion, Shinji Mikami, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Cross-Layer Design for Low-Power Wireless Sensor Node using Long-Wave Standard Time Code," Proc. International Conference on Sensor Technologies and Applications (SENSORCOMM 2007), pp. 341-346, October 2007.
  25. Fumio Ishizaki and Chikara Ohta, "Analysis of the Statistical Time-Access Fairness Index under a Scheduler Exploiting Multiuser Diversity," Proc. IEEE Wireless Telecommunications Symposium 2007, pp. CD-ROM, April 2007.
  26. Yuhi Higuchi, Augusto Foronda, Chikara Ohta, Masahiko Yoshimoto, and Yoji Okada, "Delay Guarantee and Service Interval Optimization for HCCA in IEEE 802.11e WLANs," Proc. IEEE Wireless Communications and Networking Conference (WCNC 2007), pp. 2080-2085, March 2007.
  27. Shinzi Mikami, Takashi Takeuchi, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "An Efficiency Degradation Model of Power Amplifier and the Impact against Transmission Power Control," Proc. IEEE 2007 Radio and Wireless Symposium (RWS 2007), pp. 447-450, January 2007.
  28. Shinzi Mikami, Masumi Ichien, Takashi Takeuchi, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A 356-µW, 433-MHz, Rail-to-Rail Voltage Amplifier with Carrier Sensing Function for Wireless Sensor Networks," Proc. IEEE 2007 Radio and Wireless Symposium (RWS 2007), pp. 451-454, January 2007.
  29. Augusto Foronda, Leandro Corrrea Pykosz, Chikara Ohta, and Masahiko Yoshimoto, "A New Framework to Provide Quality of Service in MPLS Network," Proc. International Telecommunications Symposium (ITS2006), pp. 765-769, September 2006.
  30. Masumi Ichien, Takashi Takeuchi, Shinji Mikami, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Isochronous MAC using Low Frequency Radio Wave Time Synchronization for Wireless Sensor Networks," Proc. First International Conference on Communications and Electronics (ICCE 2006), pp. CD-ROM, October 2006.
  31. Takashi Matsuda, Masumi Ichien, Shinji Mikami, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Data Transmission Scheduling based on RTS/CTS Exchange for Periodic Data Gathering Sensor Networks," Proc. First International Conference on Communications and Electronics (ICCE 2006), pp. CD-ROM, October 2006.
  32. Takafumi Aonishi, Takashi Matsuda, Shinji Mikami, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "Impact of Aggregation Efficiency on GIT Routing for Wireless Sensor Networks," Proc. the 2006 International Conference on Parallel Processing Workshops (ICPPW'06), pp. CD-ROM, August 2006.
  33. Chikara Ohta, Zihui Ge, Yang Guo, and Jim Kurose, "Index-Server Optimization for P2P File Sharing in Mobile Ad Hoc Networks," Proc. IEEE Globecom 2004, pp. 960-966, December 2004.
  34. Andrey Nikolov, Shigeru Tubota, Terumasa Watanabe, Chikara Ohta, and Kuniaki Uehara, "Rescue System Based on Location Aware Information Exchange in Mobile AdHoc? Network," Proc. the 2003 International Workshop on Mobile Systems, E-commerce and Agent Technology (MSEAT2003), pp. 525-530, September 2003.
  35. You Shimada, Chikara Ohta, and Masakatu Morii, "TCP Vegas with Rate Control," Proc. the 6th Asia-Pacific Conference on Communications (APCC2000), pp. 691-695, November 2000.
  36. Shinya Tojo, Fumio Ishizaki, and Chikara Ohta, "Delay Guarantee Routing Algorithm Considering Load Balancing," Proc. the 6th Asia-Pacific Conference on Communications (APCC2000), pp. 508-512, November 2000.
  37. Chikara Ohta and Masakatu Morii, "Feedback Picture Sequence Control for Real-Time MPEG Video Transfer through ATM Networks," Proc. IEEE ICC'99, pp. 1819-1825, June 1999.
  38. Shinya Tojo, Fumio Ishizaki, and Chikara Ohta, "Phase Assignment Algorithm Based on Traffic Measurement for Periodic Sources in ATM Networks," Proc. ICCCN'98, pp. 178-182, October 1998.
  39. Chikara Ohta, Tetsuya Takine, and Masayuki Murata, "Bounded-Delay and Loss-Free Guarantees for Real-Time Video in Integrated Services Packet Networks," Proc. IEEE GLOBECOM'98, pp. 477-483, November 1998.
  40. Fumio Ishizaki and Chikara Ohta, "Phase Assignment Control for MPEG Video Sources in ATM networks," Proc. IEEE ICIPS '98, pp. 138-142, August 1998.
  41. Fumio Ishizaki and Chikara Ohta, "Finding Good Combinations of Initial Phases for Periodic Sources in Discrete-Time Queues," Proc. IEEE ICC'98, pp. 1510-1514, June 1998.
  42. Chikara Ohta, Yoshikuni Onozato, Ami Kanazawa, Tsukasa Iwama, and Shigetoshi Yoshimoto, "Effects of Moving mobiles on Performance of Channel Reservation for Ahead Cells in Street Micro-cellular Systems," Proc. IEEE GLOBECOM'96, pp. 535-539, November 1996.
  43. Chikara Ohta, Kazuhiro Shinagawa, and Yoshikuni Onozato, "Cell Loss Properties for Multiplexing of MPEG Video Sources Considering Picture Coding Types in ATM Networks," Proc. IEEE ICC'96, pp. 1396-1400, June 1996.
  44. Kazuhiro Shinagawa, Chikara Ohta, Yoshikuni Onozato, Yoshitaka Takahashi, and Fumiaki Machihara, "Multiplexing Characteristics of a Large Number of MPEG Video Sources Considering Picture Coding Types in ATM Networks," Proc. the 7th International Workshop on Packet Video, pp. 129-134, March 1996.
  45. Noriaki Kamiyama, Chikara Ohta, Hideki Tode, Miki Yamamoto, and Hiromi Okada, "Quasi-STM Transmission Method Based on ATM Network," Proc. IEEE GLOBECOM'94, pp. 1808-1814, November 1994.
  46. Chikara Ohta, Hideki Tode, Miki Yamamoto, and Hiromi Okada, "Analytic Method for the Discrete-Time M/G/1 Type Finite-Buffer Queue and Its Application in ATM," Proc. ICCCN'94, pp. 151-158, September 1994.
  47. Chikara Ohta, Hideki Tode, Miki Yamamoto, and Hiromi Okada, "A Study on Policing Mechanism of Peak Cell Rate in ATM Networks," Proc. International Workshop on Mobile Communications and High-Speed Networks, pp. 89-99, November 1993.
  48. Miki Yamamoto, Toshihito Hirata, Chikara Ohta, Hideki Tode, Hiromi Okada, and Yoshikazu Tezuka, "Traffic Control Scheme for Interconnection of FDDI Networks through ATM Network," Proc. IEEE INFOCOM'93, pp. 411-420, March 1993.
  49. Chikara Ohta, Hideki Tode, Miki Yamamoto, Hiromi Okada, and Yoshikazu Tezuka, "Peak Rate Regulation Scheme for ATM Networks and Its Performance," Proc. IEEE INFOCOM'93, pp. 680-689, March 1993.

Other International Conference Presentations

  1. Chikara Ohta and Masakatsu Morii, "Performance of Feedback Picture Sequence Control for Real-Time MPEG Video Transfer through ATM Networks," Conf. Program of the 15th Triennial Conference of Association of the International Federation of Operational Research Societies(IFORS'99), p.85, August 1999, Beijing
  2. Chikara Ohta and Fumio Ishizaki, "Output Process of Shaper and Switch with Self-similar Input Traffic in ATM Networks," Proc. of the Fourth Conference of Association of Asian-Pacific Operational Research Societies, with IFORS (APORS'97), Melbourne, Australia, 30 Nov.-4 Dec., 1997.
  3. Ami Kanazawa, Chikara Ohta, and Yoshikuni Onozato, "A Performance Study of the Channel Reservation Scheme for Micorcellular System," Conf. Program of the 2nd Quebec-Kansai International Workshop on Wireless Personal Communications, p.12, Oct. 1995, Kyoto
  4. Toru Yoshikawa, Shinichiro Kawasaki, Masahiro Takase, Yasushi Hiraoka, Yumi Takaki, Chikara Ohta, and Takeshi Inoue, "Development of 27MHz/40MHz Bands Maritime Wireless Ad-hoc Networks," Proc. 2010 IEEE ICUFN2010, pp. 177-182, June 2010.

Domestic Technical Report (Not Refereed)

  1. Yu Otake, Masumi Ichien, Takashi Takeuchi, Akihiro Gion, Shinji Mikami, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Cross-Layer Design for Low-Power Wireless Sensor Node using Long-Wave Standard Time Code,"IEICE Technical Report, ICD2007-49, pp.77-82, July 2007
  2. Hyeokjong Lee, Shinji Mikami, Takashi Takeuchi, Masumi Ichien, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "A 356-µW, 433-MHz, Rail-to-Rail Voltage Amplifier with Carrier Sensing Function for Wireless Sensor Networks,"IEICE Technical Report, ICD2007-50, pp.73-76, July 2007
  3. Masumi Ichien, Takashi Takeuchi, Shinji Mikami, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Isochronous MAC using Low Frequency Radio Wave Time Synchronization for Wireless Sensor Networks (Encouragement Talk),"IEICE Technical Report, NS2006-112, pp.67-72, October 2006, Kiryu City Performing Arts Center
  4. Yuhi Higuchi, Augusto Foronda, Chikara Ohta, Yoji Okada, and Masahiko Yoshimoto, "A New Scheduler to Guarantee Delay Bound with Bandwidth Optimization for HCCA in IEEE 802.11e WLANs,"IEICE Technical Report, IN2006-28, pp.13-16, June 2006
  5. Shinji Mikami, Takashi Takeuchi, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "The impact of degradation of efficiency by output power control,"IEICE Technical Report, NS2006-4, pp.21-24, April 2006
  6. Hironori Yoshino, Takeuchi Takashi, Masumi Ichien, Takashi Matsuda, Shinji Mikami, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Impact of Node Power Variation against Life Time of Sensor Networks,"IEICE Technical Report, NS2006-6, pp.25-28, 4 2006
  7. Takashi Matsuda, Masumi Ichien, Shinji Mikami, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "Data Transmission Scheduling based on RTS/CTS Exchange for Periodic Data Gathering Sensor Networks,"IEICE Technical Report, NS2006-7, pp.29-32, April 2006
  8. Masumi Ichien, Takashi Takeuchi, Shinji Mikami, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Isochronous MAC using Low Frequency Radio Wave Time Synchronization for Wireless Sensor Networks,"IEICE Technical Report, NS2006-8, pp.33-36, April 2006
  9. Takafumi Aonishi, Hironori Yoshino, Shinji Mikami, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "Evaluation of GIT Routing Considering Aggregation Ratio in Sensor Networks (Encouragement Talk),"IEICE Technical Report, NS2006-9, pp.37-40, April 2006
  10. Takafumi Aonishi, Hironori Yoshino, Shinji Mikami, Chikara Ohta, Hiroshi Kawaguchi, and Masahiko Yoshimoto, "Evaluation of GIT Routing Considering Aggregation Ratio in Sensor Networks,"IEICE Technical Report, NS2005-108, pp.43-48, October 2005
  11. Yusuke Nishiuchi, Tetsushi Ueta, and Chikara Ohta, "Nonlinear Active Queue Control for Network Router,"IEICE Technical Report, NLP2004-107, pp.39455, January 2005, Kagawa Univ.
  12. Chikara Ohta, Zihui Ge, Yang Guo, and Jim Kurose, "Index-Server Optimization for P2P File Sharing in Mobile Ad Hoc Networks,"IEICE Technical Report, CS2004-97, pp.1-8, December 2004, Nagoya University
  13. Andrey Nikolov, Chikara Ohta, and Kuniaki Uehara, "Rescue System Based on Location Aware Information Exchange in Mobile AdHoc? Network," IEICE Tech. Report, NS2003-79, pp.61-66, Toyohashi University of Technology, Aichi, July 18, 2003.
  14. Haruhiko Saeki, Chikara Ohta, and Masakatu Morii, "Improvement on Power Consumption in MANET -Effect of Battery-aware Routing and Directional MAC-," IEICE Tech. Report, CS, Future University-Hakodate, 15 Nov. 2002.
  15. Takao Maitani, Gorou Arao, Kumiko Nakabayashi, Masuhiro Noda, Yoko Maeno, Masaki Kageishi, Chikara Ohta, Masami Mohri, Masakatu Morii, and Yoshio Kashida, "Employment of Communication System Supporting Welfare Volunteer for Local Community - Development and Expansion Enterprise of Information Communication System for Welfare Activity Support at Kainan-town, Tokushima-," IEICE Tech. Report WIT, Utsunomiya Univ., 31 Oct. 2002.
  16. Takahiro Harada, Chikara Ohta, and Masakatu Morii, "Improvement of IEEE802.11 DCF for Wireless Multi-hop Networks," IEICE Tech. Report, CS2002-33, pp.13-18, Okayama Univ., 28 June 2002.
  17. Takeshi Otsuka, Naoto Sone, Tomohide Takano, Nobuyuki Tokura, Chikara Ohta, and Masakatu Morii, "Evaluation Experiment of High Resolution Partial Images Distribution System via High Speed Networks," IEIEC Tech. Report CS, vol.101, no.495, pp.63-68, Nagoya Univ., 14 Dec. 2001.
  18. Chikara Ohta, "Wireless Ad-Hoc Network Technologies," IEIEC Tech. Report CS, vol.101, no.495, pp.53-62, Nagoya Univ., 14 Dec. 2001.
  19. Terumasa Watanabe, Chikara Ohta, and Masakatu Morii, "Fairness Improvemnt of TCP Vegas and Its Implementation," Information Processing Society of Japan, Proc. of Multimedia, Distributed, Cooperative and Mobile Symposium 2001 (DICOMO 2001), pp.73-78, June 2001. (in Japanese)
  20. Takahiro Harada, Chikara Ohta, and Masakatu Morii, "Design Method for Multi Channel Distributed Wireless Packet Networks," Information Processing Society of Japan, Proc. of Multimedia, Distributed, Cooperative and Mobile Symposium 2001 (DICOMO 2001), pp.25-30, June 2001. (in Japanese)
  21. Chikara Ohta, Kazunori Kaihotsu, and Masakatu Morii, "Minimal Channel Interference Routing for Distributed Wireless Packet Networks," IEICE Tech. Report, IN2001-31, pp.49-54, June 2001.
  22. Terumasa Watanabe, Chikara Ohta, and Masakatu Morii, "Fairness Improvement of TCP Vegas and Its Implementation," IEICE Tech. Report, CS2001-33, pp.31-37, May 2001.
  23. Takahiro Harada, Chikara Ohta, and Masakatu Morii, "Design Method for Multi Channel Distributed Wireless Packet Networks," IEICE Tech. Report, CS2001-33, pp.25-30, May 2001.
  24. Chikara Ohta, Kouji Fujita, Takao Maitani, Isamu Wakaki, Isao Kuwayama, Gorou Arao, Masuhiro Noda and Masakatu Morii, "Construction of Communication System Supporting Welfare Volunteer for Local Community -Development and Expansion Enterprise of Information Communication System for Welfare Activity Support at Kainan-town, Tokushima," IEICE Tech. Report, OFS2001-5, pp.25-32, May 2001.
  25. Katsumi Kusuba, Tomohide Takano, Nobuyuki Tokura, Chikara Ohta, Masakatu Morii and Sadakuni Shimada, "Construction of High Resolution Partial Image Distribution System on High-Speed Networks," IEICE Tech. Report, OFS2000-11, pp.15-20, May 2000.
  26. Kazunori Kaihotsu, Yoshinori Shirakawa, Chikara Ohta and Masakatu Morii, "Cluster Design Method for Hierarchical Distributed Wireless Local Loop," IEICE Tech. Report, OFS2000-8, pp.47-52, May 2000.
  27. Kazunori Kaihotsu, Yoshinori Shirakawa, Chikara Ohta, Masakatu Morii and Hiroshi Mano, "A Layered Routing Algorithm for Destributed Wireless Networks," IEICE Tech. Report, RCS99-47, pp.43-48, June 1999.
  28. You Shimada, Takeshi Yamamura, Chikara Ohta and Masakatu Morii, "A Proposal of Moment Calculating Algorithm of Busy Period of Discrete-Time M/G/1 Type Queue and Its Applications," IEICE Tech. Report, IN99-23, pp.25-32, June 1999.
  29. Yoshinori Shirakawa, Chikara Ohta, Hiroshi Mano, Yoshiaki Shiraishi, Masakatu Morii, Toru Yamashita, Tomio Takahashi and Yoshiyuki Takeda, "Construction of WLL Using Low Power Data Transmission System and Its Experimental Results," IEICE Tech. Report, Vol.99, No.69, OFS99-5, pp.31-36, (In Japanese)
  30. Yoshinori Shirakawa, Yoshiaki Shiraishi, Chikara Ohta, Naoto Sone and Masakatu Morii, "Study on Construction of Local IXP and Its Experimental Results," IEICE Tech. Report, OFS98-4, pp.23-28, 1998. (In Japanese)
  31. Chikara Ohta and Masakatu Morii, "Proposal of Feedback Picture Sequence Control for MPEG video Transfer through ATM Networks," IEICE Tech. Report, SSE98-25, pp.9-14, Kanazawa, 28 May 1998.
  32. Fumio Ishizaki and Chikara Ohta, "Initial Phase Assignment Algorithms for Periodic and Burty Sources in ATM Networks," IEICE Tech. Report, SSE97-190, pp.55-60, March 1998.
  33. Andreas P. Adi, Yoshikuni Onozato and Chikara Ohta, "A Study on Time-Frequency Dynamic Channel Allocation (TFS-DCA) Systems," Proc. of 1st Universal Personal Communication Conference, pp.68-73, Hokkaido, 31 Oct.-1 Nov. 1996.
  34. Hikaru Kudou, Chikara Ohta and Yoshikuni Onozato, "A Study of 2-Hop Transmission Scheme in Mesh-Type Lightwave Network," IEICE Tech. Report, SSE95-148, pp.61-66, 1996. (In Japanese)
  35. Kazuhiro Shinagawa, Chikara Ohta, Yiki Onozato, "A Study on Multiplexing Characteritics of MPEG Video Sources Considering Picture Coding Type in ATM Networks," IEICE, Tech. Report, SSE95-58, pp.25-30, 1995.
  36. Noriaki Kamiyama, Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "A Quasi-STM Transmission Method based on ATM Network, and its Performance Evaluation," IEICE, Tech. Report, SSE92-198, pp.91-96, 1993. (In Japanese)
  37. Toshihito Hirata, Chikara Ohta, Hideki Tode, Miki Yamamoto, Hiromi Okada and Yoshikazu Tezuka, "A Study on a Traffic Control Scheme for Inter-FDDI Traffic Transmission through ATM Networks," IEICE, Tech. Report, IN92-10, pp.13-18, 1992. (In Japanese)
  38. Chikara Ohta, Hideki Tode, Miki Yamamoto, Hiromi Okada and Y. Tezuka, "Performance Analysis of Rate Control Scheme for ATM Networks," IEICE Tech. Report, SSE91-143, pp.37-42, 1992. (In Japanese)
  39. Chikara Ohta, Hideki Tode, Miki Yamamoto and Yoshikazu Tezuka, "Call Acceptance Control Based on Traffic Classification in ATM Networks," IEICE Tech. Report, SSE90-91, 55-60, 1990. (In Japanese)

Domestic Conference (Not Refereed)

  1. Yasuharu Sakai, Takashi Matsuda, Shintaro Izumi, Takashi Takeuchi, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Study on Divided Static Random Access Memory Considering Data Aggregation for Wireless Sensor Nodes," Proc. of IEICE Society Conference, vol.2, B-20-010, p.346, Kawasaki, Sep. 18, 2008.
  2. Yusuke Kato, Pham Nguyen Tu Nhy, Ken-ichiro Yagura, Takayuki Kitada, Kazuhiro Yamaguchi, Yumi Takaki, Mitsuhiro Kuwano, and Chikara Ohta, "Proposition of Path Restructuring Procedure for Information Distribution Publish/Subscribe-type Word-mouth Information Distribution Service," Proc. of IEICE Society Conference, vol.2, B-6-47, p.47, Kawasaki, Sep. 18, 2008.
  3. Jun Yamabayashi, Yuhi Higuchi, Chikara Ohta, and Hisasi Tamaki, "Mean Transmission Rate Estimation Scheme for the Channel Allocation in Multi-channel Access Networks," Proc. of IEICE Society Conference, vol.2, B-6-37, p.37, Kawasaki, Sep. 17, 2008.
  4. Kazuya Okada, Shunsuke Watanabe, Yumi Takaki, and Chikara Ohta, "Evaluation of routing protocol for marine ad hoc networks using narrowband digital wireless," Proc. of IEICE Society Conference, vol.2, B-6-36, p.36, Kawasaki, Sep. 17, 2008.
  5. Koji Eguchi, Yoshiaki Yasumura, Masahide Nakamura, Tetsuya Takiguchi, Chikara Ohta, and Zhiwei Luo, "Programming Counseling Room - Improvement of the level of the basic skills of all students -," Japanese Society for Engineering Education, Proc. of General Conference on Engineering and Industrials Education, pp.22-23, Kobe, August 1st, 2008. (in Japanese)
  6. Ken-ichiro Yagura, Yusuke Kato, Takayuki Kitada, Yumi Takaki, Mituhiro Kuwano, and Chikara Ohta, "Information Distribution Publish/Subscribe-type Word-mouth Information Distribution Service," Proc. IEICE General Conference, B-6-6, vol. 2, p. 6, (Kita-Kyushu) March 2008.
  7. Takayuki Kitada, Ken-ichiro Yagura, Yusuke Kato, Yumi Takaki, Chikara Ohta, Daisuke Nishimoto, Ryota Matsui, Kazuhiro Yamaguchi, and Mituhiro Kuwano, "Implementation of Word-mouth Information Distribution Service with Publisher/Subscribe Method on the Wireless Ad-hoc Network Infrastructure," Proc. IEICE General Conference, B-6-7, vol. 2, p. 7, (Kita-Kyushu) March 2008.
  8. Takahiro Harada, Chikara Ohta, and Masakatu Morii, "Influcence of IEEE 802.11 DCF Short Retry Limit on TCP Throughput in Mobile Ad-hoc Networks," Proc. of the 2002 Communications Society Conference of IEICE, SB-9-3, pp.835-836, 2002.
  9. Kazunori Kaihotsu, Chikara Ohta, and Masakatu Morii, "Proposal of a Routing Algorithm for Distributed Wireless Networks," Proceedings of the 2002 IEICE Society Conference, B-5-162, 2002.
  10. Katsumi Kusuba, Tomohide Takano, Nobuyuki Tokura, Chikara Ohta and Masakatu Morii, "Configuration Study of High Resolution Partial Image Distribution System on High Speed Networks," Proceedings of the 2000 IEICE General Conference, B-7-147, p.240, 2000.
  11. Yoshinori Shirakawa, Chikara Ohta, Hiroshi Mano, Yoshiaki Shiraishi, Masakatu Morii, Toru Yamashita, Tomio Takahashi and Yoshiyuki Takeda, "Construction of WLL using Low Power Data Transmission System and Its Experimental Results," Proc. of the 43rd Annual Conference of the Institute of Systems, Control and Information Engineers, ISCIE, pp.79-80, May 19-21 1999. (In Japanese)
  12. Tatsuyoshi Kitamura, Chikara Ohta and Masakatsu Morii, "Proposal of Feedback-control of Picture Sequence for MPEG Video Transfer via ATM Networks," Proceedings of the 1998 IEICE General Conference, B-7-155, p.276, 1998. (In Japanese)
  13. Kazuhiro Shinagawa, Chikara Ohta, Yoshikuni Onozato, Hideo Shimizu and Hiroshige Kimura, "A Study on Bandwidht Allocation Method Using Dynamic bandwidth Control in ATM Networks," Proc. of the 1995 Communications Society Conference of IEICE (Autumn), B-528 1995. (In Japanese)
  14. Andreas P. Adi, Katsunori Satou, Chikara Ohta, Yoshikuni Onozato, Hideo Shimizu and Hiroshige Kimura, "A Study on Interference Between Traffic Classes that Implement Different Traffic Controls," Proc. of the 1995 Communications Society Conference of IEICE (Autumn), B-493 1995. (In Japanese)
  15. Chikara Ohta, Miki Yamamoto and Hiromasa Ikeda, "A Study on Feedback Type Rate Control Scheme with Adaptive Parameter," Proc. of the 1995 IEICE General Conference (Spring) B-747, 1995. (In Japanese)
  16. Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "Proposal of Peak Rate Usage Parameter Control System Based on Cell Transmission Time," Proc. of the 1994 IEICE General Conference (Spring), B-784 1994. (In Japanese)
  17. Yoshiaki Ueno, Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "A Multi-Channel Access Scheme in High-Speed Packet Radio Environment," Proc. of the 1993 IEICE General Conference (Autumn), B-534 1993. (In Japanese)
  18. Toshihito Hirata, Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "A Study on a Traffic Control Scheme for Inter-LAN Traffic Transmission through ATM Network," Proc. of the 1993 IEICE General Conference (Spring), B-604 (1993). (In Japanese)
  19. Noriaki Kamiyama, Chikara Ohta, Hideki Tode, Miki Yamamoto and Hiromi Okada, "A Virtual STM Transmission Method based on ATM Network," Proc. of the 1993 IEICE General Conference (Spring), B-502 1993. (In Japanese)
  20. Toshihito Hirata, Chikara Ohta, Hideki Tode, Miki Yamamoto, H. Okada and Y. Tezuka, "A Traffic Control Scheme for Inter-MAN Traffic Transmission through ATM Networks," Proc. the 1992 IEICE General Conference (Spring), B-679 1992. (In Japanese)
  21. Chikara Ohta, Hideki Tode, Miki Yamamoto, Hiromi Okada and Yoshikazu Tezuka, "Call Acceptance Control Using Traffic Classification for ATM Networks," Proc. the 1990 IEICE General Conference (Autumn), B-525 1990. (In Japanese)

Awawrd

  1. Shinzi Mikami, Takashi Takeuchi, Takashi Matsuda, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "An Efficiency Degradation Model of Power Amplifier and the Impact against Transmission Power Control for Wireless Sensor Networks," IEEE Radio and Wireless Symposium 2007 Best Student Paper Award (Nominated), Jan. 10, 2007.
  2. Yu Otake, Masumi Ichien, Takashi Takeuchi, Akihiro Gion, Shimizu Mikami, Hidehiro Fujiwara, Hiroshi Kawaguchi, Chikara Ohta, and Masahiko Yoshimoto, "Cross-Layer Design for Low-Power Wireless Sensor Node using Long-Wave Standard Time Code," IARIA International Conference on Sensor Technologies and Applications 2007 Best Paper Award, Dec. 10, 2007.
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