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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| RCS | 2021-04-23 09:45 |
Online | Online | Improving Classification Accuracy in Multi-User Communication Environment Information Estimation by Machine Learning Shun Kojima (Utsunomiya Univ.), Yi Feng (Duke Univ.), Kazuki Maruta (Tokyo Tech.), Chang-Jun Ahn (Chiba Univ.), Vahid Tarokh (Duke Univ.)  RCS2021-10 |
Recently, due to the increasing demand for wireless data traffic, highly efficient multiple access methods such as OFDMA... [more] | RCS2021-10 pp.42-47 |
| SIP, IT, RCS | 2021-01-22 15:15 |
Online | Online | A Study on the Possibility of Estimating Multiple Communication Environment Information by Deep Learning Method Using Received Signal Spectrogram Shun Kojima (Chiba Univ.), Kazuki Maruta (Tokyo Tech.), Chang-Jun Ahn (Chiba Univ.) IT2020-97 SIP2020-75 RCS2020-188 |
In the next generation mobile radio communication systems, it is essential to obtain the communication environment infor... [more] | IT2020-97 SIP2020-75 RCS2020-188 pp.188-193 |
| NS, RCS (Joint) |
2020-12-18 15:50 |
Online | Online | K-Factor Estimation based on Spectrogram Images by Convolutional Neural Network Shun Kojima, Kosuke Shima (Chiba Univ.), Kazuki Maruta (Tokyo Tech), Chang-Jun Ahn (Chiba Univ.) RCS2020-153 |
In the next generation mobile communications systems, accurate and fast acquisition of the communication environment is ... [more] | RCS2020-153 pp.103-108 |
| SR, NS, SeMI, RCC, RCS (Joint) |
2020-07-08 10:00 |
Online | Online | Evaluation of Processing Speed and Throughput in CNN-based Communication Environment Estimation Method using Spectrograms Shun Kojima (Chiba Univ.), Kazuki Maruta (Tokyo Tech), Chang-Jun Ahn (Chiba Univ.) RCS2020-58 |
[more] | RCS2020-58 pp.1-6 |
| RCS | 2020-04-23 11:45 |
Online | Online | Deep Learning based Joint SNR and Doppler Shift Detection using Multiuser Spectrogram Shun Kojima (Chiba Univ.), Yi Feng (Duke Univ.), Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.), Vahid Tarokh (Duke Univ.) RCS2020-4 |
[more] | RCS2020-4 pp.19-24 |
| AP, RCS (Joint) |
2019-11-22 09:50 |
Saga | Saga Univ. | Improving Time-domain Symbol Spread Blind Adaptive Array Interference Suppression by Principal Component Analysis Kazuki Maruta (Chiba Univ.), Kentaro Nishimori (Niigata Univ.), Chang-Jun Ahn (Chiba Univ.) RCS2019-226 |
We previously proposed a time-domain symbol spreading (TSS) which can expand the operational region of the blind adaptiv... [more] | RCS2019-226 pp.129-134 |
| RCS | 2019-10-25 14:35 |
Kanagawa | Yokosuka Research Park | [Invited Lecture]
M-QAM Adaptation by Semi-Blind Multi Modulus Algorithm and MMSE-SMI for Multicell Massive MIMO Systems Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2019-199 |
This paper expands our previously proposed semi-blind uplink interference suppression scheme on multicell multiuser mass... [more] | RCS2019-199 pp.115-120 |
| MIKA (2nd) |
2019-10-03 13:05 |
Hokkaido | Hokkaido Univ. | [Invited Lecture]
Deep Learning Based Communication Environment Estimation Using Received Signals Kazuki Maruta, Shun Kojima, Chang-Jun Ahn (Chiba Univ.) |
The performance of wireless communication greatly depends on the propagation environment. Adaptive modulation and codi... [more] |
|
| CQ (2nd) |
2019-09-05 10:40 |
Tokyo | Inter-University Seminar House | [Poster Presentation]
The estimation method of SNR and Doppler frequency by convolutional neural network using spectrogram Shun Kojima, Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) |
[more] | |
| SeMI, RCS, NS, SR, RCC (Joint) |
2019-07-11 10:40 |
Osaka | I-Site Nanba（Osaka） | [Poster Presentation]
Blind SIR Estimation by Deep Learning Using Visualized Wireless Signal Information Kazuki Maruta, Shun Kojima (Chiba Univ.), Yu Nakayama (TUAT), Daisuke Hisano (Osaka Univ.), Chang-Jun Ahn (Chiba Univ.) RCC2019-27 NS2019-63 RCS2019-120 SR2019-39 SeMI2019-36 |
This article proposes the blind interference estimation via deep learning approach exploiting the visualized wireless si... [more] | RCC2019-27 NS2019-63 RCS2019-120 SR2019-39 SeMI2019-36 pp.85-86(RCC), pp.111-112(NS), pp.107-108(RCS), pp.117-118(SR), pp.99-100(SeMI) |
| RCS | 2019-06-21 11:40 |
Okinawa | Miyakojima Hirara Port Terminal Building | SNR Estimation by using Neural Network in Adaptive Modulation and Coding Shun Kojima, Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2019-94 |
This paper proposes a novel Adaptive Modulation and Coding (AMC) scheme enabled by Artificial Neural Network (ANN) aide... [more] |
RCS2019-94 pp.333-338 |
| RCS, SR, SRW (Joint) |
2019-03-06 14:35 |
Kanagawa | YRP | [Invited Lecture]
Blind Adaptive Array with Time-Domain Symbol Spreading Kazuki Maruta (Chiba Univ.), Kentaro Nishimori (Niigata Univ.), Yu Nakayama (Aoyama Gakuin Univ.), Chang-Jun Ahn (Chiba Univ.) RCS2018-296 |
This paper proposes a time-domain symbol spreading (TSS) to expand the operational region of the blind adaptive array in... [more] | RCS2018-296 pp.77-82 |
| RCS | 2018-10-19 09:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Adaptive Switching Method with AMC and FSS Shun Kojima, Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2018-164 |
In recent years, it is required to realize higher speed and higher quality mobile communication due to the increase in I... [more] | RCS2018-164 pp.71-76 |
| RCS | 2018-10-19 10:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Vehicle-to-Pedestrian Connectivity on High Frequency Band Vehicle-Installed Access Points for Adaptive Mobile Network Kazuki Maruta (Chiba Univ.), Yu Nakayama (Aoyama Gakuin Univ.), Kazuaki Honda (Keio Univ.), Daisuke Hisano (Osaka Univ.), Ken Tanaka (neko 9 Lab.), Chang-Jun Ahn (Chiba Univ.) RCS2018-167 |
We previously conceived a concept of adaptive mobile network to track the demand traffic fluctuation via vehicle-install... [more] | RCS2018-167 pp.89-94 |
| RCS | 2018-10-19 15:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | [Encouragement Talk]
Interference Suppression Schemes for Pilot Decontamination on Multicell Massive MIMO Systems Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) RCS2018-177 |
This paper presents interference suppression performance of our proposed semi-blind uplink interference suppression sche... [more] | RCS2018-177 pp.143-148 |
| CQ | 2018-05-31 16:40 |
Chiba | Chiba Univ. Nishi-Chiba Campus, academic link center | [Invited Talk]
Blind Interference Suppression on Adaptive Arrays: Comparisons and Applications for Spectrum Sharing Kazuki Maruta (Chiba Univ.), Kentaro Nishimori (Niigata Univ.), Chang-Jun Ahn (Chiba Univ.) CQ2018-22 |
This paper presents performance comparison of interference suppression on blind adaptive array algorithms. Co-channel in... [more] | CQ2018-22 pp.25-30 |
| CS, CAS | 2018-03-13 16:20 |
Fukuoka | Nishijin Plaza, Kyushu University | Stabilized Interference Suppression by Initial Antenna Selection for CMA/MMA Adaptive Array over Fading Channel Kazuki Maruta, Chang-Jun Ahn (Chiba Univ.) CAS2017-160 CS2017-114 |
This paper proposes an initial antenna selection for constant modulus-based blind interference suppression algorithms to... [more] | CAS2017-160 CS2017-114 pp.151-155 |
| 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] | |
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