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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS, SR, SRW (Joint) |
2018-03-01 09:00 |
Kanagawa | YRP | Improving Semi-Blind Interference Suppression Performance on Multicell Massive MIMO Uplink by Beamspace Method Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.)  RCS2017-346 |
This paper improves our previously proposed semi-blind uplink interference suppression scheme for multicell multiuser ma... [more] | RCS2017-346 pp.167-172 |
| RCS | 2017-10-20 13:25 |
Miyagi | Tohoku Institute of Technology | [Invited Lecture]
Semi-Blind Adaptive Interference Cancellation with Decision Feedback Channel Estimation on Multicell Massive MIMO Uplink Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2017-194 |
This paper proposes a semi-blind uplink interference suppression scheme for multicell multiuser massive MIMO systems. In... [more] | RCS2017-194 pp.143-148 |
| CQ (2nd) |
2017-10-16 16:15 |
Fukuoka | Nishijin Plaza, Kyushu Univ. | [Poster Presentation]
Comparison of Interference Suppression Performance on Blind Adaptive Array Algorithms Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) |
We present performance comparison of interference suppression on blind adaptive array algorithms. Co-channel interferenc... [more] | |
| CAS, CS | 2017-02-23 10:10 |
Shiga | Performance Evaluation of Uplink Multiuser VLC-OFDM-IDMA System with Successive Interference Cancellation Asato Kurihara, Chang-Jun Ahn (Chiba Univ.) CAS2016-115 CS2016-76 |
[more] | CAS2016-115 CS2016-76 pp.1-6 |
|
| CAS, CS | 2015-02-27 10:25 |
Tottori | Tottori University | 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 | 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 |
| CAS, CS | 2015-02-27 11:15 |
Tottori | Tottori University | Wireless power transmission with rough beamforming method Chang-Jun Ahn (Chiba Univ.) CAS2014-135 CS2014-107 |
[more] | CAS2014-135 CS2014-107 pp.87-90 |
| CAS, CS | 2015-02-27 11:40 |
Tottori | Tottori University | Achievement of Packet Splitting and Adaptive Modulation Based on Same Feedback Information for DF Cooperative Communications Yuta Ida, Eichiroh Nishikuma (Yamaguchi Univ.), Chang-Jun Ahn (Chiba Univ.), Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) CAS2014-136 CS2014-108 |
For the technique with several channels as multiple-input multiple-output (MIMO) systems, cooperative communications has... [more] | CAS2014-136 CS2014-108 pp.91-94 |
| SRW | 2014-10-27 11:35 |
Chiba | Chiba University | Enhanced Channel Estimation Based on Interference Variance for AF Relay C-HTRCI-MIMO/OFDM Yuta Ida (Yamaguchi Univ.), Chang-Jun Ahn (Chiba Univ.), Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) SRW2014-27 |
To achieve high quality communications, amplify-and-forward (AF) relay multiple-input multiple-output (MIMO) orthogonal ... [more] | SRW2014-27 pp.13-18 |
| SRW | 2014-10-27 13:00 |
Chiba | Chiba University | 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 | 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 | 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 | 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, AP (Joint) |
2013-11-21 10:25 |
Shimane | Matsue Terrsa | Non-linear Fast Fading Compensation for HTRCI-MIMO/OFDM with QRM-MLD and Channel Ranking Yuta Ida (Yamaguchi Univ.), Masanori Yofune (Hiroshima City Univ.), Chang-Jun Ahn (Chiba Univ.), Takahiro Matsumoto, Shinya Matsufuji (Yamaguchi Univ.) RCS2013-186 |
In multiple-input multiple-output orthogonal frequency division multiplexing (MIMO/OFDM) systems, large complexity is co... [more] | RCS2013-186 pp.73-77 |
| SIP, CAS, CS | 2013-03-14 09:30 |
Yamagata | Keio Univ. Tsuruoka Campus (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) | 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) | 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 09:00 |
Yamagata | Keio Univ. Tsuruoka Campus (Yamagata) | Mitigated Deep Faded Channel with Relay Node Allocation for MUDiv/OFDMA Yuta Ida (Hiroshima City Univ.), Chang-Jun Ahn (Chiba Univ.), Takeshi Kamio, Hisato Fujisaka, Kazuhisa Haeiwa (Hiroshima City Univ.) CAS2012-131 SIP2012-162 CS2012-137 |
In recent, to achieve several services with the information product, a high speed and a high quality system of wireless ... [more] | CAS2012-131 SIP2012-162 CS2012-137 pp.205-208 |
| SIP, CAS, CS | 2013-03-15 09:25 |
Yamagata | Keio Univ. Tsuruoka Campus (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) | 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 |
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