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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 21  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
BCT, IEEE-BT 2022-02-17
13:20
Online TBD Channel Estimation to Mitigate Channel Aging in Massive MIMO with Pilot Contamination
Hiroki Hirose, Tomoaki Ohtsuki (Keio Univ.)
In a massive multiple-input mltiple-output (MIMO) system based on time division duplex (TDD), the channel state informat... [more] BCT2021-12
pp.13-16
BCT, IEEE-BT 2022-02-17
13:40
Online TBD Polar Code Search Method using Tabu Search and Bhattacharyya Parameter
Akira Yamada, Tomoaki Ohtsuki (Keio Univ.)
 [more] BCT2021-13
pp.17-20
BCT, IEEE-BT 2020-02-20
14:15
Shiga   Learning-Based Channel Estimation for Massive MIMO with Pilot Contamination and Its Impact of Model Mismatch in Training
Hiroki Hirose, Tomoaki Ohtsuki (Keio Univ.)
In massive multiple-input multiple-output (MIMO), a base station (BS) needs accurate estimation of channel state informa... [more] BCT2020-24
pp.13-16
BCT, IEEE-BT 2020-02-20
14:35
Shiga   Discrete Polar Decoder with Reduced Hardware and Computational Complexity by Quantization using Information Bottleneck Method
Akira Yamada, Tomoaki Ohtsuki (Keio Univ.)
Polar codes are attracting much attention and being used for control channels of the 5th generation of mobile communicat... [more] BCT2020-25
pp.17-20
BCT, IEEE-BT 2020-02-20
14:55
Shiga   Learning and Analysis of Damping Factor in Massive MIMO Detection using BP Algorithm with Node Selection
Junta Tachibana, Tomoaki Ohtsuki (Keio Univ.)
 [more] BCT2020-26
pp.21-24
BCT, IEEE-BT 2019-02-21
15:05
Shizuoka Kanponoyado Yaizu Precoder Design Formulation and Iterative Algorithm for Downlink GSM-MIMO
Yuwen Cao, Tomoaki Ohtsuki (Keio Univ.)
 [more] BCT2019-28
pp.21-24
BCT, IEEE-BT 2019-02-21
15:25
Shizuoka Kanponoyado Yaizu User Association in mmWave Networks using Reinforcement Learning
Yuva Kumar S., Fereidoun H. Panahi, Tomoaki Ohtsuki (KeioUniv)
With the advent of the fifth generation (5G) systems, there is an increasing demand for high data rate transmission and ... [more] BCT2019-29
pp.25-28
BCT, IEEE-BT, HOKKAIDO 2018-07-26
13:40
Hokkaido Hokkaido Univ. Channel estimation using spatial interpolation in Massive MIMO
Masumi Kuriyama, Tomoaki Ohtsuki (Keio Univ.)
Massive MIMO (multiple-input multiple-output) is a technology that uses many antennas at the base station, and can reali... [more] BCT2018-60
pp.1-4
BCT, IEEE-BT 2018-02-22
16:15
Toyama Kanponoyado-Toyama Joint Maximum A Posteriori Estimation of Channel and Interference Power with Channel Covariance Estimation for OFDM Transmission
Masahiro Kudo, Tomoaki Ohtsuki (Keio Univ.)
Superposed multicarrier transmission has been proposed as one of the techniques to improve frequency utilization efficie... [more] BCT2018-31
pp.29-32
BCT, IEEE-BT [detail] 2017-02-23
13:40
Aichi Kanpo-no-yado Chita-mihama QoE-aware Video Steaming Transmission Optimization Method for Joint Bit Rate and Playout Threshold Control
Yan Qi, Tomoaki Ohtsuki (Keio Univ)
 [more] BCT2017-24
pp.5-8
BCT, IEEE-BT 2016-02-18
16:40
Hokkaido Kanpo-No-Yado (Otaru) A Centralized Interference Alignment (IA) Design for Multi-User MIMO Interference Channels
Fereidoun H. Panahi, Tomoaki Ohtsuki (Keio Univ.), Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara (NTT)
Interference alignment (IA) is a technique shown to be able to achieve a significant overall throughput in a 𝐾-u... [more] BCT2016-25
pp.33-36
BCT, IEEE-BT 2015-06-05
14:25
Tokyo mmbi, Inc. Superposed Multicarrier Transmission
Tomoaki Ohtsuki (Keio Univ.), Jun Mashino (NTT)
 [more] BCT2015-46
pp.9-12
BCT, IEEE-BT 2015-06-05
14:50
Tokyo mmbi, Inc. Scalable and Cost-effective Live Video Encoding and Delivery in Cloud
Koustubh Gaikwad, Tomoaki Ohtsuki (Keio Univ.)
Live media streaming has become one of the most important applications over the Internet. However, having an all-round s... [more] BCT2015-47
pp.13-16
BCT, IEEE-BT 2015-02-19
15:30
Mie   A study on log-likelihood ratio setting for superposed multicarrier transmission
Yohei Shibata, Tomoaki Ohtsuki (Keio Univ.), Jun Mashino, Takatoshi Sugiyama (NTT)
Superposed multicarrier transmission scheme is known to improve frequency utilization efficiency where several wireless ... [more] BCT2015-29
pp.17-20
BCT, IEEE-BT 2015-02-19
15:55
Mie   Scalable and Cost Effective Live Video Encoding in Cloud
Koustubh Gaikwad, Tomoaki Ohtsuki (Keio Univ.)
 [more] BCT2015-30
pp.21-24
BCT, IEEE-BT 2014-06-06
14:20
Tokyo TV TOKYO Corporation User Speed Variation on Learning-based Cell Selection For Femtocell Network: Effect and Countermeasure
Chaima Dhahri, Tomoaki Ohtsuki (Keio Univ.)
 [more] BCT2014-58
pp.9-12
BCT, IEEE-BT 2014-02-20
15:10
Ishikawa   Effects of Multiple Secondary Transmit Beamformings on Spectrum Leasing for Primary Secure Communications
Masahiro Endo, Tomoaki Ohtsuki (Keio Univ.), Takeo Fujii (Univ. of Electro-Comm.), Osamu Takyu (Shinshu Univ.)
 [more] BCT2014-38
pp.21-24
BCT, IEEE-BT 2013-02-20
15:35
Okinawa   Performance Analysis of Superposed Multicarrier Transmission Using Robust LLR
Naotoshi Yoda, Genji Hayashi, Tomoaki Ohtsuki (Keio Univ.), Jun Mashino, Takatoshi Sugiyama (NTT)
Superposed multicarrier transmission scheme is known to improve frequency utilization efficiency where several wireless ... [more] BCT2013-45
pp.29-32
BCT, IEEE-BT 2012-09-21
13:25
Iwate Iwate University Interfered Bandwidth Detection Technique Based on the Change of Error Probability Using FEC Metric Masking
Genji Hayashi, Tomoaki Ohtsuki (Keio Univ.), Jun Mashino, Takatoshi Sugiyama (NTT)
 [more] BCT2012-78
pp.5-8
BCT, IEEE-BT 2012-02-24
14:15
Shizuoka Kanpo no yado Yaidu High Power Efficiency Transmission Using Game Theory for AF Cooperative Communication
Takuya Yamada, Tomoaki Ohtsuki (Keio Univ.)
Cooperative communication has been studied as a way to improve reliability of networks compared to conventional direct t... [more] BCT2012-34
pp.13-16
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