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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| US | 2022-06-30 10:30 |
Osaka | Kansai University (Senriyama Campus) (Osaka) | Development of photoacoustic signal measurement system for an optically mechanical-property-observation Kazuki Tamura (HUSM), Ken-ya Hashimoto (UESTC), Shinpei Okawa (HUSM)  US2022-9 |
Mechanical properties of biological tissues are reported to relate to inflammation and lesions. This study develops a me... [more] | US2022-9 pp.1-4 |
| CAS, CS | 2015-02-27 10:25 |
Tottori | Tottori University (Tottori) | the research of highspeed beamforming technology based on downlink Multi-User MIMO/OFDM Haiyan Teng, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2014-133 CS2014-105 |
[more] | CAS2014-133 CS2014-105 pp.77-80 |
| CAS, CS | 2015-02-27 10:50 |
Tottori | Tottori University (Tottori) | A novel Symbol Timing Synchronization Scheme for OFDM Systems Based on variational Pseudo-Noise preamble Wenjian Wang, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2014-134 CS2014-106 |
[more] | CAS2014-134 CS2014-106 pp.81-86 |
| SRW | 2014-10-27 13:00 |
Chiba | Chiba University (Chiba) | Blind symbol synchronization scheme for preambleless OFDM systems based on cyclic prefixes in multipath channels Wen-jian Wang, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) SRW2014-28 |
Symbol timing offset (STO) can cause phase offset (FO),inter-symbol interference (ISI) and inter-channel interference (I... [more] | SRW2014-28 pp.19-24 |
| SRW | 2014-10-27 13:25 |
Chiba | Chiba University (Chiba) | IQ Imbalance and Carrier Frequency Offset Compensation Schemes using TFI-OFDM Hikaru Oka, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) SRW2014-29 |
A direct-conversion receiver (DCR) can reduce the power consumption and cost. However, a DCR in Orthogonal frequency div... [more] | SRW2014-29 pp.25-30 |
| SRW | 2014-10-27 13:50 |
Chiba | Chiba University (Chiba) | Performance Enhancement for Single Symbol Decodable AMC QO-STBC/OFDM with Asymmetric Constellation Masayuki Kitakata, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) SRW2014-30 |
STBC is a technique to achieve transmit diversity. QO-STBC is full rate STBC constructed from relaxing orthogonality, a... [more] |
SRW2014-30 pp.31-35 |
| SRW | 2014-10-27 14:25 |
Chiba | Chiba University (Chiba) | Performance Improvement for VLC-OFDM using FSS and PPS Yosuke Fujii, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) SRW2014-31 |
Visible light communication has been attracted attention because of its ubiquitous and safety. However, faults of LED co... [more] | SRW2014-31 pp.37-41 |
| RCS, SR, SRW (Joint) |
2014-03-04 08:50 |
Tokyo | Waseda Univ. (Tokyo) | A Study on Higher-Order RF-Recursive Filters Ken Seo, Takahiro Fujikawa, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ), Mikio Kamada (AKM) SRW2013-44 |
This paper reports development of the auto-setting methodology of the center frequency and fractional bandwidth for the ... [more] | SRW2013-44 pp.1-6 |
| SIP, CAS, CS | 2013-03-14 09:30 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | Enhancement of cell-edge throughput performance with CoMP transmission using QO-STBC scheme Kei Okubo, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2012-96 SIP2012-127 CS2012-102 |
Recently, there has been growing demand for high data rate in wireless communication. However, under the situation such ... [more] | CAS2012-96 SIP2012-127 CS2012-102 pp.1-4 |
| SIP, CAS, CS | 2013-03-14 09:55 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | IQ Imbalance Estimation and Compensation Schemes using TFI-OFDM System Hikaru Oka, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2012-97 SIP2012-128 CS2012-103 |
A direct-conversion receiver (DCR) reduces the power consumption and cost. However, DCR in Orthogonal frequency division... [more] | CAS2012-97 SIP2012-128 CS2012-103 pp.5-8 |
| SIP, CAS, CS | 2013-03-14 10:20 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | Performance improvement with channel ranking and cutting the symbol candidate branchs for complexity reducing sequential decision with QRM-MLD Tomoki Yoshimura (Chiba Univ.), Yuta Ida (Hiroshima City Univ.), Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2012-98 SIP2012-129 CS2012-104 |
Recently, the wireless communication technology is required to carry a large amount of digital information with spread o... [more] | CAS2012-98 SIP2012-129 CS2012-104 pp.9-14 |
| SIP, CAS, CS | 2013-03-15 09:25 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | Power Priority Selection for MUDiv/OFDMA and Adaptive Clipping due to Peak Reduction Signal Akihiro Kuroha, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2012-132 SIP2012-163 CS2012-138 |
In recent, orthogonal frequency division multiple access (OFDMA) has been used for a multiuser wireless communication. I... [more] | CAS2012-132 SIP2012-163 CS2012-138 pp.209-214 |
| SIP, CAS, CS | 2013-03-15 09:50 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | Throughput Performance Enhancement applying Adaptive Modulation for Single Symbol Decodable QO-STBC with Full Diversity Masayuki Kitakata, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2012-133 SIP2012-164 CS2012-139 |
STBC is a technique to achieve transmit diversity. QO-STBC is full rate STBC constructed from relaxing orthogonality, an... [more] | CAS2012-133 SIP2012-164 CS2012-139 pp.215-218 |
| SIP, CAS, CS | 2013-03-15 10:15 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) (Yamagata) | Interference Lump-sum Compensation Scheme using the Parallel Replica Signals for SP-MIMO/OFDM in the Large Delay Spread Channel Taichi Sakaue, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ) CAS2012-134 SIP2012-165 CS2012-140 |
In mobile communications, MIMO-OFDM system performance suffers severe degradation caused by the large delay spread chann... [more] | CAS2012-134 SIP2012-165 CS2012-140 pp.219-222 |
| US | 2012-10-22 15:30 |
Ishikawa | Kanazawa Inst. Tech. (Ishikawa) | Widely Tunable Surface Acoustic Wave Filters Masahiro Inaba, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) US2012-66 |
Tunable RF filters are strongly demanded for developing a reconfigurable RF front-end supporting multi-band and multi-st... [more] | US2012-66 pp.13-16 |
| CAS, CS, SIP | 2012-03-08 09:40 |
Niigata | The University of Niigata (Niigata) | A Design of Single Symbol Decodable QO-STBC with Full Diversity Naotoshi Yoda, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2011-121 SIP2011-141 CS2011-113 |
The conventional quasi-orthogonal space-time block code (QO-STBC) for four transmit antennas is full rate, but achieves ... [more] | CAS2011-121 SIP2011-141 CS2011-113 pp.83-86 |
| CAS, CS, SIP | 2012-03-08 10:05 |
Niigata | The University of Niigata (Niigata) | ISI and ICI Compensation with Large Delay Spread Channel Estimation based on Pilot Symbol's Cyclic Property for SP-OFDM Taichi Sakaue, Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ) CAS2011-122 SIP2011-142 CS2011-114 |
Scattered pilot based OFDM can accuretely estimate the channel state information (CSI) with small number pilot signals u... [more] | CAS2011-122 SIP2011-142 CS2011-114 pp.87-91 |
| CAS, CS, SIP | 2012-03-08 10:30 |
Niigata | The University of Niigata (Niigata) | Complexity Reducing QRD-MLD with Threshold Method based on the Estimated Noise Variance Tomoki Yoshimura (Chiba Univ.), Yuta Ida (Hiroshima City Univ.), Chang-Jun Ahn, Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2011-123 SIP2011-143 CS2011-115 |
[more] | CAS2011-123 SIP2011-143 CS2011-115 pp.93-96 |
| CAS, CS, SIP | 2012-03-09 09:25 |
Niigata | The University of Niigata (Niigata) | Optimum Splitting Transmission in Multi-Relay Cooperative Communications for WF/PA-SC-FDMA Yuta Ida (Hiroshima City Univ.), Chang-Jun Ahn (Chiba Univ.), Takeshi Kamio, Hisato Fujisaka, Kazuhisa Haeiwa (Hiroshima City Univ.), Tatsuya Omori, Ken-ya Hashimoto (Chiba Univ.) CAS2011-135 SIP2011-155 CS2011-127 |
[more] | CAS2011-135 SIP2011-155 CS2011-127 pp.157-160 |
| US | 2011-09-26 16:15 |
Miyagi | Tohoku Univ. (Miyagi) | Modification of Scalar Potential Theory for Surface Acoustic Wave Devices to Take Slowness Asymmetry into Account Ken-ya Hashimoto, Tatsuya Omori, Chang-Jun Ahn (Chiba Univ.) US2011-51 |
[more] | US2011-51 pp.27-30 |
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