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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| SAT, RCS (Joint) |
2012-08-30 11:30 |
Kochi | Kochi City Cultura-Plaza CUL-PORT | Transmission Performance Improvement by Non-Linear Distortion Noise Control in Spectrum Sharing Seiichiro Okamoto, Shigeru Tomisato (Okayama Univ.), Hiromasa Fujii (NTTDOCOMO), Masaharu Hata (Okayama Univ.), Shunji Miura, Hidetoshi Kayama (NTTDOCOMO)  RCS2012-101 |
On spectrum sharing systems, transmission power control (TPC) effectively works to avoid harmful inter-system interferen... [more] | RCS2012-101 pp.31-36 |
| SR | 2012-07-26 13:25 |
Kagoshima | Yakushima (an island in Kagoshima pref.) | A Proposed Application of Cognitive Radio Technique towards the Usage of White Space in Public Cellular Systems and its Evaluation Results obtained form an Indoor Test-Bed Hiromasa Fujii, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2012-18 |
[more] | SR2012-18 pp.7-14 |
| AP, SAT (Joint) |
2012-07-26 11:20 |
Hokkaido | Hokkaido Univ. | Human-Body Shadowing Modeling for Indoor Quasi-static MIMO Channels Kentaro Saito, Koshiro Kitao, Tetsuro Imai, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) AP2012-53 |
[more] | AP2012-53 pp.131-136 |
| SR | 2012-01-26 16:05 |
Kagoshima | Kagoshima | [Panel Discussion]
Possible applications of cognitive radio techniques to the next generation cellular communication systems Hiromasa Fujii, Hiroki Harada, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2011-84 |
[more] | SR2011-84 pp.43-50 |
| NS, RCS (Joint) |
2011-12-16 15:05 |
Yamaguchi | Yamaguchi University | Non-Linear Distortion Noise Control for Spectrum Sharing Systems Seiichiro Okamoto, Shigeru Tomisato (Okayama Univ.), Hiromasa Fujii (NTTDOCOMO), Masaharu Hata (Okayama Univ.), Shunji Miura, Hidetoshi Kayama (NTTDOCOMO) RCS2011-260 |
Recently, a spectrum sharing method between wireless communication systems has been studied to use frequency resources w... [more] | RCS2011-260 pp.165-170 |
| NS, RCS (Joint) |
2011-12-16 13:40 |
Yamaguchi | Yamaguchi University | Study on Area Expansion for Cellular System using Frequencies above 5GHz
-- Evaluation of Number of Repeaters and System Cost depending on Frequencies -- Ngochao Tran, Yasuhiro Oda, Tamami Maruyama, Jiyun Shen, Hidetoshi Kayama (NTT Docomo INC.) RCS2011-266 |
To realize next-generation ultra high-speed mobile communication system, we study on using high carrier frequencies abov... [more] | RCS2011-266 pp.195-200 |
| SR | 2011-07-28 15:05 |
Kanagawa | YRP | [Technology Exhibit]
Multiple Signal Identification Equipment Based on Cyclostationarity Hiroki Harada, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2011-27 |
A cyclostationary feature detection is considered as one of major sensing techniques for a cognitive radio system due to... [more] | SR2011-27 pp.61-66 |
| SR | 2011-04-22 09:55 |
Shimane | Matsue Terrsa | Achievable Capacity of Cognitive Radio Systems Coexisting with a Macro Cellular System Hiromasa Fujii, Hiroki Harada, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2011-9 |
[more] | SR2011-9 pp.53-58 |
| SR | 2011-04-22 10:20 |
Shimane | Matsue Terrsa | A Study on Spectrum Sharing between Systems Using 3D Area Model
-- Improvement of Evaluation Method and Comparison with a Method Based on 2DArea Model -- Hiroto Yasuda, Hiromasa Fujii, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2011-10 |
In this paper, we propose a simulation method for system level evaluation based on 3-dimensional area model when an macr... [more] | SR2011-10 pp.59-64 |
| RCS, MoNA, SR (Joint) |
2011-03-02 13:40 |
Kanagawa | YRP | A Signal Recognition Technique based on Cyclostationarity and its Application to Cognitive Radio Systems Hiroki Harada, Hiromasa Fujii, Shunji Miura, Hidetoshi Kayama (NTT DOCOMO) SR2010-90 |
This paper introduces a signal recognition technique based on cyclostationarity and proposes its application to cognitiv... [more] | SR2010-90 pp.17-22 |
| SR | 2011-01-27 13:25 |
Fukuoka | Kyushu Institute of Technology | Experimental Evaluation of Cyclostationarity-Based Multiple Signal Identification Method by using Spatial Channel Emulator Hiroki Harada, Hiromasa Fujii, Shunji Miura, Hidetoshi Kayama, Yoshiki Okano, Tetsuro Imai (NTT DOCOMO) SR2010-70 |
The problem with conventional cyclostationarity-based feature detection is that the detection probability of weak sign... [more] |
SR2010-70 pp.7-12 |
| AN, USN, SR, RCS (Joint) |
2010-10-27 14:50 |
Osaka | Osaka University | Investigation on System Performance of L1/L3 Relays in LTE-Advanced Downlink Satoshi Nagata (NTT DOCOMO), Yuan Yan, Xinying Gao, Anxin Li (DOCOMO Beijing Communications Labs), Hidetoshi Kayama, Tetsushi Abe, Takehiro Nakamura (NTT DOCOMO) RCS2010-111 |
[more] | RCS2010-111 pp.25-30 |
| RCS, AP, WBS, SR, MW, MoNA (Joint) |
2006-03-02 09:20 |
Kanagawa | YRP | Channel Estimation Based on Time-Domain Subspace Tracking for OFDM Systems Xiaolin Hou, Zhan Zhang, Hidetoshi Kayama (DoCoMo Beijing Labs) |
Channel state information (CSI) is important for the performance of orthogonal frequency division multiplexing (OFDM) sy... [more] | RCS2005-200 pp.133-138 |
| RCS, AP, WBS, SR, MW, MoNA (Joint) |
2006-03-02 10:40 |
Kanagawa | YRP | Adaptive Joint Frame Synchronization and Carrier Frequency Offset Estimation for OFDM using Central Symmetric Partial Sub-blocks (CSPS) training sequence Zhongshan Zhang, Zhan Zhang, Hidetoshi Kayama (DoCoMo Beijing Labs) |
Central Symmetric with Partial Sub-blocks (CSPS) training sequence is proposed to optimize the synchronization performan... [more] | RCS2005-203 pp.151-156 |
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