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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 21 - 40 of 79 [Previous]  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
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
SIP, CAS, CS 2013-03-15
10:15
Yamagata Keio Univ. Tsuruoka Campus (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
CAS, CS, SIP 2012-03-08
09:40
Niigata The University of 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
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