List of Publications


A. Journal Papers
  1. Y. Fukuchi, K. Hirata, and J. Maeda,
    ``Characteristics of selective and tunable wavelength converters using quasi-phase matched lithium niobate waveguide devices with dual pump configuration,''
    Optics Communications, vol. 432, pp. 71-78, 2019.

  2. T. Kudo, T. Kimura, Y. Inoue, H. Aman, and K. Hirata,
    ``Stochastic modeling of self-evolving botnets with vulnerability discovery,''
    Computer Communications, vol. 124, pp. 101-110, 2018.

  3. T. Kimura, K. Hirata, and M. Muraguchi,
    ``Adaptive access-point and channel selection method using Markov approximation,''
    International Journal of Distributed Sensor Networks, vol. 14, no. 2, pp. 1-11, 2018.

  4. K. Yoshioka, K. Hirata, and M. Yamamoto,
    ``Flow-based routing for flow entry aggregation in software-defined networking,''
    IEICE Transactions on Communications, vol. E-101B, no. 1, pp. 49-57, 2018.

  5. Y. Fukuchi, T. Kimura, K. Hirata,
    ``Characteristics of all-optical 3R regenerators using cascaded second-order nonlinear effect in quasi-phase matched lithium niobate devices,''
    Optical and Quantum Electronics, vol. 49, no. 9, pp. 1-16, 2017.

  6. Y. Fukuchi, K. Hirata, M. Muraguchi, and J. Maeda,
    ``Rational harmonic mode-locked laser using a bismuth-oxide-based highly nonlinear erbium-doped fiber,''
    Optics Communications, vol. 383, pp. 397-401, 2017.

  7. K. Hirata, K. Ito, Y. Fukuchi, and M. Muraguchi,
    ``Design of low power all-optical networks with dynamic lightpath establishment,''
    IEEE/KICS Journal of Communications and Networks, vol. 18, no. 4, pp. 551-558, 2016.

  8. K. Matsushima, K. Hirata, and M. Yamamoto,
    ``Fairness improvement of multiple-bottleneck flow in data center networks,''
    IEICE Transactions on Communications, vol. E99-B, no. 7, pp. 1445-1454, Jul. 2016.

  9. Y. Fukuchi, K. Hirata, and J. Maeda,
    ``Numerical analyses of all-optical retiming switches using cascade of second harmonic generation and difference frequency mixing in periodically poled lithium niobate waveguides,''
    IEICE Transactions on Electronics, vol. E98-C, no. 12, pp. 1143-1149, 2015.
    DOI: 10.1587/transele.E98.C.1143.

  10. K. Hirata and M. Muraguchi,
    ``Dynamic lightpath establishment considering four-wave mixing for achieving low power all-optical networks,''
    IEEJ Transactions on Electronics, Information and Systems, vol. 134 no. 8 pp. 1016-1023, 2014 (in Japanese).
    DOI: 10.1541/ieejeiss.134.1016.

  11. Y. Fukuchi, K. Hirata, and H. Ikeoka,
    ``Extra-broadband wavelength-tunable actively mode-locked short-cavity fiber ring laser using a bismuth-based highly nonlinear erbium-doped fiber,''
    Optics Communications, vol. 24, no. 1, pp. 141-146, 2014.
    DOI: 10.1016/j.optcom.2014.03.050.

  12. Y. Fukuchi, K. Hirata, and H. Ikeoka,
    ``Wavelength-tunable and bandwidth-variable ultra-flat optical frequency comb block generation from a bismuth-based actively mode-locked fiber laser,''
    IEEE Photonics Journal, vol. 6, no. 1, pp. 1-10, 2014.
    DOI: 10.1109/JPHOT.2013.2295469.

  13. K. Hirata, Y. Fukuchi, and M. Muraguchi,
    ``Dynamic lightpath establishment considering four wave mixing in multifiber WDM networks,''
    Photonic Network Communications, vol. 26, no. 2, pp. 120-130, 2013.
    DOI: 10.1007/s11107-013-0414-2.

  14. K. Hirata and M. Kawahara,
    ``Group replica caching scheme for optical grid networks,''
    Optical Switching and Networking, vol. 10, no. 3, pp. 223-232, 2013.
    DOI: 10.1016/j.osn.2013.02.006.

  15. K. Hirata and Dewiani,
    ``Dynamic routing and wavelength assignment in multifiber WDM networks with wavelength conversion capability,''
    Network and Communication Technologies, vol. 1, no. 2, pp. 36-47, 2012.
    DOI: 10.5539/nct.v1n2p36.

  16. Dewiani, K. Hirata, K. Kalegele, Y. Higami, and S. Kobayashi,
    ``Dynamic routing and wavelength assignment with backward reservation in wavelength-routed multifiber WDM networks,''
    Journal of Networks, vol. 7, no. 9, pp. 1441-1448, 2012.
    DOI: 10.4304/jnw.7.9.1441-1448.

  17. K. Hirata and M. Kawahara,
    ``Contention resolution considering multicast traffic in optically burst-switched WDM networks,''
    Photonic Network Communications, vol. 23, no. 2, pp. 157-165, 2012.
    DOI: 10.1007/s11107-011-0346-7.

  18. Wardi, K. Hirata, Y. Higami, and S. Kobayashi,
    ``RE-OLSR: Residual energy-based OLSR protocol in mobile ad hoc networks,''
    International Journal of Multimedia Technology, vol. 1, no. 2, pp. 93-97, 2011.
    DOI: 10.5963/IJMT0102006.

  19. K. Hirata and M. Kawahara,
    ``Parallel and multi-wavelength downloading in optical grid networks,''
    Photonic Network Communications, vol. 22, no. 3, pp. 245-253, 2011.
    DOI: 10.1007/s11107-011-0324-0.

  20. K. Hirata, K. Kalegele, Y. Higami, and S. Kobayashi,
    ``Replica selection and downloading based on wavelength availability in λ-grid networks,''
    Journal of Communications, vol. 5, no. 9, pp. 692-702, 2010.
    DOI: 10.4304/jcm.5.9.692-702.

  21. K. Hirata, T. Matsuda, and T. Takine,
    ``Three-domain burst scheduling in optically burst-switched WDM networks,''
    IEEE/OSA Journal of Optical Communications and Networking, vol. 2, no. 6, pp. 332-343, 2010.
    DOI: 10.1364/JOCN.2.000332.

  22. K. Hirata, K. Kalegele, Y. Higami, and S. Kobayashi,
    ``Dynamic parallel downloading with network coding in λ-grid networks,''
    Journal of Communications, vol. 5, no. 5, pp. 425-435, 2010.
    DOI: 10.4304/jcm.5.5.425-435.

  23. K. Matsumura, K. Hirata, Y. Higami, and S. Kobayashi,
    ``An effective filtering method based on occurrence rates and consistency in personalized information delivery systems,''
    Polish Journal of Environmental Studies, vol. 18, no. 4A, pp. 54-58, 2009.

  24. T. Ooka, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Information filtering method using diversity among languages for personalized information delivery systems,''
    Polish Journal of Environmental Studies, vol. 18, no. 4A, pp. 67-71, 2009.

  25. K. Sugimoto, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Multiplexing scheme with distributed processing in external grids,''
    Polish Journal of Environmental Studies, vol. 18, no. 4A, pp. 50-53, 2009.

  26. K. Hirata, T. Matsuda, H. Nagamochi, and T. Takine,
    ``Contention-free λ-planes in optically burst-switched WDM networks,''
    IEICE Transactions on Communications, vol. E90-B, no. 9, pp. 2524-2531, 2007.
    DOI: 10.1093/ietcom/e90-b.9.2524.

  27. K. Hirata, T. Matsuda, and T. Takine,
    ``Dynamic burst discarding scheme for deflection routing in optical burst switching networks,''
    Optical Switching and Networking, vol. 4, no. 2, pp. 106-120, 2007.
    DOI: 10.1016/j.osn.2007.01.001.

B. Refereed Conference Papers
  1. K. Kishioka, K. Hongyo, T. Kimura, T. Kudo, Y. Inoue, and K. Hirata,
    ``Prediction method of infection spreading with CNN for Self-evolving Botnets,''
    to be presented at Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC 2018), Honolulu, HI, Nov. 2018.

  2. T. Kimura, K. Goto, K. Morita, K. Hirata, Y. Fukuchi, and M. Muraguchi,
    ``Routing and spectrum allocation method to avoid the generation of crosstalk and the blocking of lightpath establishment in multi-core fiber networks,''
    in Proc. the 14th Advanced International Conference on Telecommunications (AICT 2018), Barcelona, Spain, Jul. 2018.

  3. K. Hongyo, T. Kimura, T. Kudo, Y. Inoue, and K. Hirata,
    ``Stochastic modeling for self-evolving botnets in infection control environments,''
    in Pcor. the 14th Advanced International Conference on Telecommunications (AICT 2018), Barcelona, Spain, Jul. 2018.

  4. Y. Hayamizu, K. Hirata, and M. Yamamoto,
    ``CCAR: caching and content-aware routing for content oriented networking,''
    in Proc. IEEE ComSoc International Communications Quality and Reliability Workshop (IEEE CQR 2018), Austin, TX, May 2018.

  5. W. Morita, D. Sugahara, K. Hirata, and M. Yamamoto,
    ``AQM with multi-queue for microburst in data center networks,''
    in Proc. the 8th International Workshop on Big Data and Cloud Performance (DCPerf'18), Honolulu, HI, Apr. 2018.

  6. T. Nogiwa and K. Hirata,
    ``Identification of TCP congestion control algorithms with convolution neural networks,''
    in Proc. the 32nd International Conference on Information Networking (ICOIN 2018), Chiang Mai, Thailand, Jan. 2018.

  7. M. Iio, K. Hirata, and M. Yamamoto,
    ``Distributed cache management considering content popularity for in-network caching,''
    in Proc. the 23rd Asia-Pacific Conference on Communications (APCC 2017), Perth, Australia, Dec. 2017.

  8. Y. Sato, T. Kimura, K. Hirata, and M. Muraguchi,
    ``Dynamic lightpath establishment method based on maximum spectrum utilization for elastic optical path networks,''
    in Proc. the 13th Advanced International Conference on Telecommunications (AICT 2017), Venice, Italy, Jun. 2017.

  9. K. Hongyo, T. Kimura, T. Kudo, Y. Inoue, and K. Hirata,
    ``Modeling of countermeasure against self-evolving botnets,''
    in Proc. IEEE International Conference on Consumer Electronics - Taiwan (IEEE ICCE-TW 2017), Taipei, Taiwan, Jun. 2017.

  10. Y. Miyoshi, T. Wada, and K. Hirata,
    ``Collaborative in-network caching for multi-path routing,''
    in Proc. IEEE International Conference on Consumer Electronics - Taiwan (IEEE ICCE-TW 2017), Taipei, Taiwan, Jun. 2017.

  11. A. Noguchi, T. Kimura, Y. Inoue, K. Hirata, and M. Muraguchi,
    ``Node density estimation using sparsely deployed access points,''
    in Proc. IEEE International Conference on Consumer Electronics - Taiwan (IEEE ICCE-TW 2017), Taipei, Taiwan, Jun. 2017.

  12. M. Iio, K. Hirata, and M. Yamamoto,
    ``Content download method with distributed cache management,''
    in Proc. the 25th International MultiConference of Engineers and Computer Scientists (IMECS 2017), Hong Kong, Mar. 2017 (Best Paper Award).

  13. K. Morita and K. Hirata,
    ``Dynamic spectrum allocation method for reducing crosstalk in multi-core fiber networks,''
    to be presented at the 31st International Conference on Information Networking (ICOIN 2017), Da Nang, Vietnam, Jan. 2017.

  14. M. Takezaki and K. Hirata,
    ``Static lightpath establishment method with multi-path routing in elastic optical networks,''
    to be presented at the 31st International Conference on Information Networking (ICOIN 2017), Da Nang, Vietnam, Jan. 2017.

  15. K. Yoshioka, K. Hirata, and M. Yamamoto,
    ``Routing method with flow entry aggregation for software-defined networking,''
    to be presented at the 31st International Conference on Information Networking (ICOIN 2017), Da Nang, Vietnam, Jan. 2017.

  16. K. Hirata and M. Yamamoto,
    ``Data center traffic engineering using markov approximation,''
    to be presented at the 31st International Conference on Information Networking (ICOIN 2017), Da Nang, Vietnam, Jan. 2017.

  17. T. Kimura, K. Hirata, and M. Muraguchi,
    ``Dynamic access-point selection method using markov approximation,''
    to be presented at the 31st International Conference on Information Networking (ICOIN 2017), Da Nang, Vietnam, Jan. 2017.

  18. M. Fukuoka, T. Kimura, K. Hirata, and M. Muraguchi,
    ``Performance analysis of intermittently connected sensor networks,''
    to be presented at 2016 IEEE Region 10 International Conference (TENCON 2016), Singapore, Nov. 2016.

  19. Y. Fukuchi and K. Hirata,
    ``Tunable wavelength conversion of 40-Gbps signals using cascade of sum frequency mixing and difference frequency mixing in a periodically poled lithium niobate,''
    in Proc. Photonics and Fiber Technology Conference, Sydney, Australia, Sep. 2016.

  20. T. Kudo, T. Kimura, Y. Inoue, H. Aman, and K. Hirata,
    ``Behavior analysis of self-evolving botnets,''
    to be presented at the 2016 International Conference on Computer, Information, and Telecommunication Systems (CITS 2016), Kunming, China, Jul. 2016.

  21. T. Mori, K. Hirata, and M. Yamamoto,
    ``Content-oriented probabilistic routing with measured RTT,''
    to be presented at IEEE ComSoc International Communications Quality and Reliability Workshop (CQR 2016), Stevenson, WA, May 2016.

  22. Y. Fukuchi, K. Hirata, and J. Maeda,
    ``Flat optical frequency comb generation from an actively mode-locked short-cavity fiber laser using a bismuth-based highly nonlinear erbium-doped fiber,''
    in Proc. the 11th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR 2015), Busan, Korea, Aug. 2015.

  23. K. Hirata, K. Ito, Y. Fukuchi, and M. Muraguchi,
    ``Dynamic lightpath establishment for achieving low power all-optical networks,''
    in Proc. the 17th Asia-Pacific Network Operations and Management Symposium (APNOMS 2015), Busan, Korea, Aug. 2015.

  24. K. Hirata, Y. Fukuchi, and M. Muraguchi,
    ``Design of all-optical networks considering power consumption and four-wave mixing,''
    in Proc. the 2015 International Conference on Computer, Information, and Telecommunication Systems (CITS 2015), Gijon, Spain, Jul. 2015.

  25. T. Suzuki, T. Kimura, K. Hirata, and M. Muraguchi,
    ``Adaptive virtual machine assignment for multi-tenant data center networks,''
    in Proc. the 2015 International Conference on Computer, Information, and Telecommunication Systems (CITS 2015), Gijon, Spain, Jul. 2015.

  26. Y. Fukuchi and K. Hirata,
    ``Rational harmonic mode-locked fiber ring laser using a bismuth-based highly nonlinear erbium-doped fiber,''
    in Proc. Nonlinear Optics (NLO 2015), Kauai, HI, Jul. 2015.

  27. Y. Fukuchi and K. Hirata,
    ``All-optical retiming switches using the cascaded second-order nonlinear effect in periodically poled lithium niobate devices: effects of domain length errors,''
    in Proc. Nonlinear Optics (NLO 2015), Kauai, HI, Jul. 2015.

  28. Y. Fukuchi and K. Hirata,
    ``Ultra-flat optical frequency comb block generation from an actively and harmonically mode-locked fiber laser using a bismuth-based erbium-doped fiber and a bismuth-based highly nonlinear fiber,''
    in Proc. Nonlinear Optics (NLO 2013), Hawaii, HI, Jul. 2013.
    DOI: 10.1364/NLO.2013.NM3A.2.

  29. Dewiani, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Dynamic routing and wavelength assignment in multifiber WDM networks with sparse wavelength conversion,''
    in Proc. the 3rd International Conference on ICT Convergence (ICTC 2012), Jeju, Korea, Oct. 2012, pp. 567-572.
    DOI: 10.1109/ICTC.2012.6387201.

  30. K. Hirata and M. Kawahara,
    ``Replica caching scheme according to status of neighboring nodes in optical grid networks,''
    in Proc. the 2nd IFIP International Conference on Network of the Future (NoF 2011), Paris, France, Nov. 2011, pp. 113-117.
    DOI: 10.1109/NOF.2011.6126669.

  31. Dewiani, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Dynamic routing and wavelength assignment scheme using signaling of backward reservation in multifiber WDM networks,''
    in Proc. the 2nd International Conference on ICT Convergence (ICTC 2011), Seoul, Korea, Sep. 2011, pp. 447-452.
    DOI: 10.1109/ICTC.2011.6082635.

  32. Wardi, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Residual energy-based OLSR in mobile ad hoc networks,''
    in Proc. the 2nd International Conference on Multimedia Technology (ICMT 2011), Hangzhou, China, Jul. 2011, pp. 3214-3217 (Outstanding Paper Award).
    DOI: 10.1109/ICMT.2011.6002054.

  33. Dewiani, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Wavelength selection based on wavelength availability in multi-fiber WDM networks,''
    in Proc. the 2nd International Conference on Multimedia Technology (ICMT 2011), Hangzhou, China, Jul. 2011, pp. 3794-3797.
    DOI: 10.1109/ICMT.2011.6002117.

  34. K. Hirata and M. Kawahara,
    ``Replica selection for parallel and multi-wavelength downloading in optical grid networks,''
    in Proc. the 4th Workshop on Network Control and Optimization (NET-COOP 2010), Ghent, Belguim, Nov. 2010, pp. 82-89.

  35. A. Funo, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Optimistic processing protocol for multiplexing in external PC grids,''
    in Proc. the 17th International Multi-Conference on Advanced Computer Systems (ACS 2010), Pomerania, Poland, Oct. 2010.

  36. Wardi, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Energy aware MPR selection mechanism in OLSR-based mobile ad hoc networks,''
    in Proc. the 17th International Multi-Conference on Advanced Computer Systems (ACS 2010), Pomerania, Poland, Oct. 2010.

  37. K. Hirata, Y. Higami, and S. Kobayashi,
    ``An effective dynamic parallel downloading scheme with network coding in λ-grid networks,''
    in Proc. the 1st Asian Himalayas International Conference on Internet (AH-ICI2009), Kathmandu, Nepal, Nov. 2009.
    DOI: 10.1109/AHICI.2009.5340310.

  38. K. Matsumura, K. Hirata, Y. Higami, and S. Kobayashi,
    ``An Effective Filtering Method Based on Occurrence Rates and Consistency in Personalized Information Delivery Systems,''
    in Proc. the 16th International Multi-Conference on Advanced Computer Systems (ACS 2009), Pomerania, Poland, Oct. 2009.

  39. T. Ooka, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Information Filtering Method Using Diversity among Languages for Personalized Information Delivery Systems,''
    in Proc. the 16th International Multi-Conference on Advanced Computer Systems (ACS 2009), Pomerania, Poland, Oct. 2009.

  40. K. Sugimoto, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Multiplexing Scheme with Distributed Processing in External Grids,''
    in Proc. the 16th International Multi-Conference on Advanced Computer Systems (ACS 2009), Pomerania, Poland, Oct. 2009.

  41. S. Takasuka, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Consideration of an appropriate program segment size on method of concealing purposes of processing,''
    in Proc. the 15th International Multi-Conference on Advanced Computer Systems (ACS 2008), Pomerania, Poland, Oct. 2008.

  42. H. Miyaoka, K. Hirata, Y. Higami, and S. Kobayashi,
    ``The detection of falsification with check codes in external grid,''
    in Proc. the 15th International Multi-Conference on Advanced Computer Systems (ACS 2008), Pomerania, Poland, Oct. 2008.

  43. K. Himeda, K. Hirata, Y. Higami, and S. Kobayashi,
    ``Consideration of characteristics of programs for concealing purpose of processing in distributed computing systems,''
    in Proc. the 15th International Multi-Conference on Advanced Computer Systems (ACS 2008), Pomerania, Poland, Oct. 2008.

  44. K. Hirata, T. Matsuda, and T. Takine,
    ``Proactive contention avoidance scheme with dedicated wavelength assignment in optically burst-switched WDM networks,''
    in Proc. the 4th IEEE and IFIP International Conference on Wireless and Optical Communications Networks (WOCN 2007), Singapore, Jul. 2007.
    DOI: 10.1109/WOCN.2007.4284205.

  45. K. Hirata, T. Matsuda, H. Nagamochi, and T. Takine,
    ``Contention-free λ-planes in optically burst switched WDM networks,''
    in Proc. IEEE Global Telecommunications Conference (GLOBECOM), San Francisco, CA, Nov. 2006.
    DOI: 10.1109/GLOCOM.2006.414.