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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) |
2014-03-03 15:10 |
Tokyo | Waseda Univ. | Analog SC-FDE using Space-Time Transmit Diversity Combined with Receive Antenna Diversity Thanh Hai Vo, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.)  RCS2013-341 |
Recently, we proposed a new analog signal transmission technique called analog single-carrier transmission with frequenc... [more] | RCS2013-341 pp.211-216 |
| RCS, SR, SRW (Joint) |
2014-03-05 13:40 |
Tokyo | Waseda Univ. | HARQ Throughput of Single-carrier MIMO Communication with Adaptive Multiplexing Order Ryo Nagaoka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2013-383 |
Multiple-input multiple-output (MIMO) transmission, which uses multiple antennas at transmitter and receiver, can increa... [more] | RCS2013-383 pp.463-468 |
| RCS | 2013-10-18 11:15 |
Tokyo | Sophia Univ. | Joint Tx/Rx MMSE Filtering for Single-Carrier MIMO Spatial Multiplexing Using Iterative Interference Canceller Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2013-162 |
Recently, we proposed a joint transmit/receive spatial/frequency filtering based on minimum mean square error criterion ... [more] | RCS2013-162 pp.115-120 |
| RCS, SAT (Joint) |
2013-08-29 15:20 |
Nagano | Shinshu Univ. | Effect of STBC diversity on Single-carrier Multi-user MIMO Downlink using Tomlinson-Harashima Precoding Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2013-127 |
Single-carrier (SC) space-time block coded-joint transmit/receive diversity (STBC-JTRD) is a single user (SU) multiple-i... [more] | RCS2013-127 pp.25-30 |
| RCS, SAT (Joint) |
2013-08-29 15:45 |
Nagano | Shinshu Univ. | Single-carrier MIMO Transmission Using Adaptive Selection of Modulation Level and Spatial Multiplexing Order Ryo Nagaoka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2013-128 |
Multiple-input multiple-output (MIMO) transmission, which uses multiple antennas at transmitter and receiver, can increa... [more] | RCS2013-128 pp.31-36 |
| RCS | 2013-06-21 09:10 |
Hokkaido | Hokkaido Univ. | SSB Transmission using Analog SC-FDE Thanh Hai Vo, Shinya Kumagai, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2013-60 |
In analog waveform transmission, the channel is considered as frequency-nonselective fading channel due to the narrow si... [more] | RCS2013-60 pp.135-140 |
| RCS | 2013-04-19 10:20 |
Okinawa | Ishigaki City Hall | HARQ Throughput of Adaptive Single-carrier MIMO Transmission with Joint Tx/Rx Filtering in Distributed Antenna Network Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2013-15 |
In the conventional cellular network (CN) whose antennas are co-located at the center of the cell, the throughput near t... [more] | RCS2013-15 pp.81-86 |
| RCS, SR, SRW (Joint) |
2013-02-27 14:30 |
Tokyo | Waseda Univ. | Single-carrier MIMO Adaptive Multiplexing Order Selecting Transmission Using Cyclic Delay Pilot Channel Estimation Ryo Nagaoka, Shinya Kumagai, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-296 |
There is a trade-off between the spatial diversity and the spatial multiplexing in multiple-input multiple-output (MIMO)... [more] | RCS2012-296 pp.73-78 |
| RCS, SR, SRW (Joint) |
2013-02-27 15:30 |
Tokyo | Waseda Univ. | Adaptive Single-carrier MIMO Transmission with Joint Tx/Rx MMSE Filtering Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-299 |
Recently, we proposed an adaptive single-carrier (SC) multiple-input multiple-output (MIMO) transmission using joint tra... [more] | RCS2012-299 pp.91-96 |
| RCS, SR, SRW (Joint) |
2013-03-01 13:00 |
Tokyo | Waseda Univ. | A Study of Energy Efficiency in Distributed Antenna Network Hidetoshi Kaji, Shinya Kumagai, Katsuhiro Temma, Tatsunori Obara, Fumiyuki Adachi (Tohoku Univ.) RCS2012-345 |
In the conventional centralized antenna network (CAN), whose antennas are centralized at the center of the wireless cell... [more] | RCS2012-345 pp.363-368 |
| NS, RCS (Joint) |
2012-12-14 16:20 |
Ehime | Ehime Univ. | Adaptive Single-carrier MIMO Transmission with Joint Tx/Rx MMSE Filtering Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-232 |
Recently, we proposed a joint transmit/receive minimum mean square error based filtering (joint Tx/Rx MMSE filtering) to... [more] | RCS2012-232 pp.291-296 |
| AP, RCS (Joint) |
2012-11-16 13:00 |
Tokyo | Tokyo Denki University | Effect of STBC Cooperative Diversity in A Disaster-resilient Wireless Network Shinya Kumagai, Ryo Nagaoka, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-177 |
In the case of a disaster, severe communication traffic congestion may happen in a cellular mobile communication network... [more] | RCS2012-177 pp.97-102 |
| SAT, RCS (Joint) |
2012-08-31 09:15 |
Kochi | Kochi City Cultura-Plaza CUL-PORT | Cooperative Diversity with STBC-OFDM Shinya Kumagai, Ryo Nagaoka, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-112 |
The transmission quality of the mobile terminal far from access points (APs) degrades due to the low received signal-to-... [more] | RCS2012-112 pp.97-102 |
| SAT, RCS (Joint) |
2012-08-31 09:40 |
Kochi | Kochi City Cultura-Plaza CUL-PORT | Bit Error Rate Analysis of STBC-OFDM Using Transmit FDE Ryo Nagaoka, Shinya Kumagai, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-113 |
Orthogonal frequency division multiplexing (OFDM) is a promising broadband wireless transmission technique, but requires... [more] | RCS2012-113 pp.103-108 |
| RCS | 2012-06-21 10:20 |
Hokkaido | Hakodate City Central Library | Study on Single-carrier MIMO Spatial Multiplexing/Diversity Switching Methods in a Multi-cell Environment Ryo Nagaoka, Shinya Kumagai, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-44 |
Multiple-Input Multiple-Output (MIMO) which uses multiple transmit and receive antennas can increase the maximum transmi... [more] | RCS2012-44 pp.7-12 |
| RCS | 2012-06-22 10:40 |
Hokkaido | Hakodate City Central Library | HARQ Throughput of Single-carrier MIMO Spatial Multiplexing with Joint Tx/Rx MMSE Filtering Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2012-61 |
For wireless packet communications, hybrid automatic repeat-request (HARQ) is an indispensable technique. Recently, we p... [more] | RCS2012-61 pp.105-110 |
| RCS | 2012-06-22 11:50 |
Hokkaido | Hakodate City Central Library | Dynamic Channel Assignment based on Channel Segregation for a Wireless Lan System Yuki Matsumura, Shinya Kumagai, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ) RCS2012-64 |
In frequency reusing wireless networks, as the number of transmitters increases, the co-channel interference (CCI) gets ... [more] | RCS2012-64 pp.123-128 |
| SR, RCS, SRW (Joint) |
2012-03-09 16:05 |
Kanagawa | YRP | Joint Transmit/Receive MMSE Filtering for Single-carrier MIMO Spatial Multiplexing Shinya Kumagai, Ryusuke Matsukawa, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2011-372 |
Multiple-input multiple-output (MIMO) spatial multiplexing is a powerful technique to increase the transmission rate. Ho... [more] | RCS2011-372 pp.335-340 |
| NS, RCS (Joint) |
2011-12-16 10:00 |
Yamaguchi | Yamaguchi University | Spectrum Efficiency of MIMO Spatial Multiplexing in a Multi-cell Distributed Antenna Network Shinya Kumagai, Ryusuke Matsukawa, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2011-251 |
Multiple-input multiple-output (MIMO) spatial multiplexing can increase the transmission rate without bandwidth expansio... [more] | RCS2011-251 pp.111-116 |
| RCS, AN, SR, USN (Joint) |
2011-10-26 10:40 |
Tokyo | Sophia Univ. | Channel Capacity Improvement of MIMO Spatial Multiplexing on Distributed Antenna Network Shinya Kumagai, Ryusuke Matsukawa, Tatsunori Obara, Tetsuya Yamamoto, Fumiyuki Adachi (Tohoku Univ.) RCS2011-144 SR2011-44 AN2011-22 USN2011-24 |
Distributed antenna network (DAN), in which antennas are spatially distributed over the wireless cell, can suppress the ... [more] | RCS2011-144 SR2011-44 AN2011-22 USN2011-24 pp.25-30(RCS), pp.7-12(SR), pp.7-12(AN), pp.7-12(USN) |
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