If you made any changes in Pure these will be visible here soon.

Research Output

2007

Robust Multiuser Detection Method for Frequency Offsets in Uplink MIMO-OFDM

Takatori, Y., Kudo, R., Ishihara, K., Ohta, A. & Kubota, S., 2007 Feb 1, In : ITG/IEEE Workshop on Smart Antenna (WSA 2007). p. 5345

Research output: Contribution to journalArticle

Simple antenna pattern switching and interference-induced multi-hop transmissions for cognitive radio networks

Di Taranto, R., Nishimori, K., Popovski, P., Yomo, H., Takatori, Y., Prasad, R. & Kubota, S., 2007 Jan 1, 2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks. IEEE Computer Society, p. 543-546 4 p. 4221539. (2007 2nd IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Citations (Scopus)

Spatial Opportunity for Cognitive Radios under Directional Interference

Taranto, R. D., Prasad, R. & Kubota, S., 2007 May 1, In : Default journal.

Research output: Contribution to journalArticle

Spatial opportunity for cognitive radio systems with heterogeneous path loss conditions

Nishimori, K., Taranto, R. D., Yomo, H., Popovski, P., Takatorit, Y., Prasad, R. & Kubota, S., 2007 Aug 2, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring. p. 2631-2635 5 p. 4212969. (IEEE Vehicular Technology Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Citations (Scopus)

Spatial Opportunity for Cognitive Radio Systems with Heterogeneous Path Losses Conditions

Nishimori, K., Taranto, R. D., Yomo, H., Popovski, P., Takatori, Y., Prasad, R. & Kubota, S., 2007 Apr 1, In : IEEE International Conference on Vehicle Technology (VTC'2007-S). p. 2631-2635

Research output: Contribution to journalArticle

28 Citations (Scopus)

Tree search based approximate maximum likelihood detector for spatial multiplexing systems

Jiang, W., Asai, Y. & Kubota, S., 2007 Dec 1, 18th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC'07. 4394077. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)
4 Citations (Scopus)

User selection method for block diagonalization in multiuser MIMO systems

Kudo, R., Takatori, Y., Nishimori, K., Ohta, A. & Kubota, S., 2007 Dec 1, IEEE GLOBECOM 2007 - 2007 IEEE Global Telecommunications Conference, Proceedings. p. 3295-3300 6 p. 4411535. (GLOBECOM - IEEE Global Telecommunications Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)
2006

Detailed spectral study of an ultra-luminous compact X-ray source M81 X-9 in the disk dominated

Tsunoda, N., Kubota, A., Namiki, M., sugiho, M., Kawabata, K. & Mikishima, K., 2006 Dec 1, In : Publications of the Astronomical Society of Japan. 58

Research output: Contribution to journalArticle

On Downlink Space Division Multiplexing in Partial Cooperation Multiple Access Point Systems

Kudo, R., Takatori, Y., Ohta, A., Nishimori, K. & Kubota, S., 2006 Nov 1, In : International Symposium on Antennas and Propagation (ISAP'2006).

Research output: Contribution to journalArticle

Robust Beamforming Method for Frequency Offsets in Uplink Multiuser OFDM-MIMO

Takatori, T., Kudo, K., Ohta, O., Ishihara, I., Nishimori, N. & Kubota, K., 2006 Nov 1, In : International Symposium on Antennas and Propagation (ISAP'2006).

Research output: Contribution to journalArticle

Spatial Availability for Cognitive Radio System under Directional Interference

Nishimori, K., Bottega, E., Yomo, H., Popovski, P., Takatori, Y., Prasad, R. & Kubota, S., 2006 Sep 1, In : Workshop on Personal Mobile Communications (WPMC'2006).

Research output: Contribution to journalArticle

Suzaku Observation of The Black Hole Transient 4U 1630-472

Kubota, A., Dotani, T., Cottam, J., Done, C., Totani, T., Angelini, L., Fabian, A. C., Fukuzawa, Y. & ?7?, ., 2006 Aug 21, In : LAU XXVI General Assembly,S238 Black Holes: From The Stars to Galaxies-Across The Range of Masses.

Research output: Contribution to journalArticle

MAC protocol for fair two-way communications in wireless LANs

Ogawa, M., Kuno, Y., Sakata, T. & Kubota, S., 2005 Dec 1, In : Proceedings of the International Conference on Parallel Processing Workshops. 2005, p. 359-365 7 p., 1488716.

Research output: Contribution to journalConference article

8 Citations (Scopus)

NTT Access Network Service Systems Laboratories

Kubota, K. & Inoue, I., 2005 Dec 1, In : New Breeze. p. 14-15

Research output: Contribution to journalArticle

Spectral Evolution of a Luminous Compact X-ray Source in NGC253 with Chandra and XMM-Newton Observatories

Tanaka, T., Sugiho, M., Kubota, A., Makishima, K. & Takahashi, T., 2005 Jun 1, In : Publications of the Astronomical Society of Japan. 57, p. 507-511

Research output: Contribution to journalArticle

X-ray and Optical Studies of ULXs

Kubota, A., 2005 Jun 27, In : High Energies in the Highlands, Fort William, Scotland.

Research output: Contribution to journalArticle

2004

Advanced Technologies for Broadband Wireless Access Services

Kubota, S., 2004 May 1, In : Default journal.

Research output: Contribution to journalArticle

A priority control method for wireless multi-hop access using IEEE 802.11 DCF mechanism

Kawamura, K., Inoue, Y. & Kubota, S., 2004 Dec 1, p. 520-524. 5 p.

Research output: Contribution to conferencePaper

Deployment of Broadband Internet Access Employing Fiber to the Wireless in Japan

Kubota, S., 2004 Jun 1, In : Default journal.

Research output: Contribution to journalArticle

Development of hard X-ray polarimeter for gamma-ray bursts

Gunji, S., Suzuki, T., Sato, F., Sakurai, H., Tokanai, F., Saito, Y. & Kubota, A., 2004 Apr 1, In : Advances in Space Research. 33, p. 1771-1776

Research output: Contribution to journalArticle

8 Citations (Scopus)

Development of traffic control mechanisms for IEEE 802.11 wireless LANs without QoS support functionality

Hiraguri, T., Inoue, Y. & Kubota, S., 2004 Dec 1, 1st International Symposium on Wireless Communication Systems 2004, Proceedings ISWCS '04. p. 383-387 5 p. (1st International Symposium on Wireless Communication Systems 2004, Proceedings ISWCS '04).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)
1 Citation (Scopus)

Galactic Black Holes and The Relation to The ULXs

Kubota, A., 2004 Jun 1, In : The 5th Microquasar Workshop, Beijing, China.

Research output: Contribution to journalArticle

Improvements of the Astro-E2 hard X-ray Detector(HXD-II)

Kokubun, M., Abe, K., Ezoe, Y., Fukazawa, Y., Hong, S., Inoue, H., Ito, T., Kamae, T., ?38? ?49??17??, . . & Kubota, S., 2004 Oct 1, In : IEEE Trans. Nucl. Sci.. 51, p. 1991

Research output: Contribution to journalArticle

60 Citations (Scopus)

Present Condition and Trend of the Wireless Access Technology Toward the Ubiquitous Service

Matsue, H., Aikawa, S., Kubota, S., Hojo, H., Watanabe, K. & Saito, T., 2004 Jan, In : IEEJ Transactions on Electronics, Information and Systems. 124, 1, p. 2-11 10 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
115 Citations (Scopus)

Wireless access technologies

Watanabe, K., Hojo, H. & Kubota, S., 2004 Nov 1, In : Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers. 58, 11, p. 1565-1567+i

Research output: Contribution to journalArticle

Wireless download agent for high-capacity wireless LAN based ubiquitous services

Tokuyasu, T., Inoue, Y. & Kubota, S., 2004 Dec 1, p. 3250-3256. 7 p.

Research output: Contribution to conferencePaper

2003

Accretion Disk Spectra of Ultraluminous X-ray Sources in Nearby Spiral Galaxies and Galactic Superluminal Jet

Ebisawa, K., Zycki, P., Kubota, A., Mizuno, T. & Watarai, K., 2003 Nov 10, In : The Astrophysical Journal. 597, p. 780-797

Research output: Contribution to journalArticle

73 Citations (Scopus)

Discovery of A New X-Ray Jet of PKS2201 + 044 and Its Emission Mechanism

Urry, C. M., VanDuyne, J., C.C.Cheung, C. C. C., R.M.Smbruna, R. M. S., J.E.Pesce, J. E. P., Maraschi, L., F.Tavecchio, F. T. & Kubota, S., 2003 Mar 24, In : Default journal.

Research output: Contribution to journalArticle

Future Systems and Technologies for Broadband Wireless Access Services

Matsue, M., Kubota, K., Hojo, H., Watanabe, W., Saito, S., Aikawa, A. & Sato, S., 2003 Oct 1, In : IEEE Topical Conference on Wireless Communication Technology 2003. p. 156-157

Research output: Contribution to journalArticle

5 Citations (Scopus)

Observational evidence for a high energy Compton cloud in GRO J1655-40

Kobayashi, Y., Kubota, A., Nakazawa, K., Takahashi, T. & Makishima, K., 2003 Feb 1, In : Publications of the Astronomical Society of Japan. 55, p. 273-279

Research output: Contribution to journalArticle

13 Citations (Scopus)
2002

Another Interpretation of the Power-law type Spectrum of an Ultralunminous Compact X-ray Source in IC 342

Kubota, A., Done, C. & Makishima, K., 2002 Dec 1, In : Monthly Notices of the Royal Astronomical Society. 337, p. L11-L15

Research output: Contribution to journalArticle

Design and performance evaluation of software defined radio prototype for PHS and IEEE802.11 wireless LAN

Uehara, K., Shiba, H., Shono, T., Shirato, Y., Yoshioka, H., Nakatsugawa, M., Kubota, S. & Umehira, M., 2002 Dec 1, 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2002. p. 452-457 6 p. 1046742. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; vol. 1).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Design and Performance Evaluation of Software Radio for PHS and IEEE802.11 Wireless LANs

Uehara, K., Shiba, K. UH., Shono, T., Shirato, Y., Yoshioka, H., Nakatsugawa, M., Kubota, S. & Umehira, M., 2002 Sep 1, In : IEEE International Symposium on Personal Indoor Mobile Radio Communications(PIMRC'2002).

Research output: Contribution to journalArticle

Improvement on the Light Yield of a High-Z Inorganic Scintil lator GSO(Ce)

Kamae, T., Fukazawa, Y., Isobe, N., Kokubun, M., Kubota, A., Osone, S., Takahashi, T. & H.Ishibashi, N. T., 2002 Sep 11, In : Nuclear Instruments and Methods in Physics Research Section A. 490, p. 456-464

Research output: Contribution to journalArticle

Proposal and evaluation of system diversity for software defined radio

Shono, T., Uehara, K. & Kubota, S., 2002 Jan 1, In : IEEE International Conference on Communications. 1, p. 490-496 7 p.

Research output: Contribution to journalConference article

Proposal and Performance Evaluation of System Diversity for Software Defined Radio

Shono, T., Uehara, K. & Kubota, S., 2002 Apr 1, In : IEEE International Conference on Communications (ICC'2002). p. 490-496

Research output: Contribution to journalArticle

2001

A Feature Extraction Technique for Fading Channels to Achieve Automatic Modulation Recognition that Employs the Nearest Neigbor Rule

Yoshioka, H., Shirato, Y., Nakatsugawa, M. & Kubota, S., 2001 Jan 1, In : URSI AP-RASC01.

Research output: Contribution to journalArticle

Design and evaluation of software radio program on multiprocessor architecture platform for full-duplex real-time communication

Uehara, K., Suzuki, Y., Shiba, H., Tanaka, H., Asai, Y., Shono, T. & Kubota, S., 2001 Jan 1, p. G114-G119.

Research output: Contribution to conferencePaper

2 Citations (Scopus)