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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 59  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, AP, UWT
(Joint)
2020-11-25
16:15
Online Online [Invited Lecture] Spatially Parallel Signal Transmission in LED Visible Light Wireless Communications
Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) AP2020-82 RCS2020-121
The traffic of wireless communication systems has greatly increased due to the expansion of smartphones and IoT. Visible... [more] AP2020-82 RCS2020-121
pp.51-55(AP), pp.66-70(RCS)
SRW, SeMI, CNR
(Joint)
2019-11-06
13:25
Tokyo Kozo Keisaku Engineering Inc. [Poster Presentation] An Interference and Non-Linear Distortion Noise Canceler in LED Visible Light Indoor Wireless Communications
Keitaro Hirai, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2019-39 SeMI2019-83 CNR2019-33
This paper studies a collaborative cancelation method for non-linear distortion noise caused by LED non-linearity of a t... [more] SRW2019-39 SeMI2019-83 CNR2019-33
pp.63-68(SRW), pp.83-88(SeMI), pp.61-66(CNR)
SRW, SeMI, CNR
(Joint)
2019-11-06
13:25
Tokyo Kozo Keisaku Engineering Inc. [Poster Presentation] Spatially Parallel Transmission by Collaborative Non-Linear Distortion Compensation in Both Transmitter and Receiver for LED Visible Light Communications
Saroma Era, Sigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2019-42 SeMI2019-86 CNR2019-36
This paper evaluates transmission performance improvement by collaborative non-linear distortion compensation in both tr... [more] SRW2019-42 SeMI2019-86 CNR2019-36
pp.73-78(SRW), pp.93-98(SeMI), pp.71-76(CNR)
MIKA
(2nd)
2019-10-04
10:15
Hokkaido Hokkaido Univ. [Poster Presentation] Receivable signal number evaluation in spatially parallel transmission for LED visible light wireless communications
Yusuke Kamei, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.)
The traffic of wireless communication systems has greatly increased due to the expansion of smartphones and IoT. Visible... [more]
MIKA
(2nd)
2019-10-04
10:15
Hokkaido Hokkaido Univ. [Poster Presentation] A Study on Signal Separation and Demodulation Method for Collided Signal in Stored Batch Signal Processing
Toru Nishiyama (Okayama Univ.), Ryuku Miyachi, Humiya Ohno, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.)
 [more]
RCS, SR, SRW
(Joint)
2019-03-07
11:20
Kanagawa YRP Lighting Arrangement for Spatially Parallel Signal Transmission in LED Visible Light Communications
Yusuke Kamei, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2018-64
This paper evaluates interference characteristics according to LED lighting and photodetector arrangement in
spatially ... [more]
SRW2018-64
pp.41-46
ASN, SRW
(Joint)
2018-11-05
13:00
Tokyo Tokyo Denki University, Tokyo Senju Campus [Poster Presentation] Interference Characteristic Evaluation by Lighting Placement in LED Visible Light Communications
Yusuke Kamei, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) ASN2018-67 SRW2018-32
This paper evaluates interference characteristics according to LED lighting and photodetector position in signal transmi... [more] ASN2018-67 SRW2018-32
pp.71-74(ASN), pp.47-50(SRW)
SRW 2018-08-20
13:35
Okayama Okayama Univ. A compensation method of non-linear distortion in both transmitter and receiver of LED visible light communications
Takeshi Okada, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ) SRW2018-16
This paper proposes a collaborative nonlinear distortion compensation method for LED nonlinear distortion in both transm... [more] SRW2018-16
pp.43-46
ASN, NS, RCS, SR, RCC
(Joint)
2018-07-12
10:55
Hokkaido Hakodate Arena [Poster Presentation] Inter-system interference evaluation in spectrum sharing systems with multiple frequency bands
Kyouhei Ueda, Shigeru Tomisato, Kazuhiro Uehara (Okayama Univ.) RCC2018-46 NS2018-59 RCS2018-104 SR2018-43 ASN2018-40
This paper evaluates the reduction effect of harmful interference to an existing system by bandwidth control in a second... [more] RCC2018-46 NS2018-59 RCS2018-104 SR2018-43 ASN2018-40
pp.101-104(RCC), pp.107-110(NS), pp.119-122(RCS), pp.111-114(SR), pp.117-120(ASN)
SRW 2017-08-21
13:50
Kyoto Kyoto University A non-linear distortion compensation method in a receiver of LED visible light communications
Takeshi Okada, Takahiro Chikamori, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2017-14
This paper proposes a method to compensate nonlinear distortion of LED of transmitter by for receiver side in visible li... [more] SRW2017-14
pp.31-34
NS, ASN, RCC, RCS, SR
(Joint)
2017-07-20
11:05
Hokkaido Hokkaido Univ. [Poster Presentation] Transmission Efficiency Improvement by Non-Liner Distortion Noise Power Control in Multi-Band Systems
Jumpei Onji, Shigeru Tomisato, Kazuhiro Uehara (Okayama Univ.) RCC2017-32 NS2017-53 RCS2017-124 SR2017-47 ASN2017-41
This paper evaluates transmission efficiency improvement by non-linear distortion noise power control for multiple frequ... [more] RCC2017-32 NS2017-53 RCS2017-124 SR2017-47 ASN2017-41
pp.113-116(RCC), pp.127-130(NS), pp.167-170(RCS), pp.125-128(SR), pp.145-148(ASN)
SRW 2017-06-12
10:25
Kanagawa Fujitsu Transmission Performance Improvement by Saturation Control of LEDs in Visible Light Communication
Takahiro Chikamori, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2017-1
This paper proposes a saturation control method of LEDs according to transmission distance in visible light communicatio... [more] SRW2017-1
pp.1-4
RCS, SR, SRW
(Joint)
2017-03-02
09:00
Tokyo Tokyo Institute of Technology Transmission Performance of Visible Light Communications Using Saturated LEDs
Takahiro Chikamori, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara (Okayama Univ.) SRW2016-85
This paper evaluates transmission performance in which LEDs are linearized and used in its saturation region in visible ... [more] SRW2016-85
pp.99-104
SR 2016-10-28
14:40
Osaka Osaka Univ. Nakanoshima Center Transmission Efficiency Improvement by Non-Linear Distortion Noise Power Control in Multi-Band Systems
Ryotaro Ueda, Shigeru Tomisato, Kazuhiro Uehara (Okayama Univ.) SR2016-74
Multiple frequency band transmission has been studied to realize broadband wireless communications in which plural frequ... [more] SR2016-74
pp.111-114
RCS, CCS, SR, SRW
(Joint)
2016-03-02
13:15
Tokyo Tokyo Institute of Technology Interference Alignment for Multi-User MIMO Interference Channels Based on Estimated Uplink Channels
Fereidoun H. Panahi, Tomoaki Ohtsuki (Keio Univ.), Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara (NTT) RCS2015-351
We propose centralized iterative algorithms that jointly determine the optimal transmit and receive filters for a K-user... [more] RCS2015-351
pp.109-114
RCS, CCS, SR, SRW
(Joint)
2016-03-02
13:40
Tokyo Tokyo Institute of Technology Joint Interference Alignment Transceiver Filter Design and Power Allocation for Downlink Multi-User MIMO Interference Channels
Fereidoun H. Panahi, Tomoaki Ohtsuki (Keio Univ.), Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara (NTT) RCS2015-352
We propose centralized iterative algorithms that jointly determine the optimal transmit and receive filters as well as t... [more] RCS2015-352
pp.115-120
RCS, CCS, SR, SRW
(Joint)
2016-03-04
14:30
Tokyo Tokyo Institute of Technology [Invited Lecture] Broadband Spectrum Sensing Platform based on Received Waveform Cross-correlation using Distributed Sensors
Doohwan Lee, Takayuki Yamada, Hiroyuki Shiba, Yo Yamaguchi, Takana Kaho, Tadao Nakagawa, Kazuhiro Uehara (NTT) SR2015-117
Rapid increase in mobile traffic due to the spread of smartphones will cause the frequency shortage. Frequency range fro... [more] SR2015-117
p.171
RCS, SAT
(Joint)
2015-08-18
15:05
Fukuoka Fukuoka Univ. Complexity Reduction of Pico Cell Clustering for Interference Alignment in Heterogeneous Networks
Ryuma Seno, Tomoaki Ohtsuki (Keio Univ.), Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara (NTT) RCS2015-153
Interference alignment (IA) in heterogeneous networks (HetNets) is a promising technique that improves the
spectral eff... [more]
RCS2015-153
pp.123-128
EMT, MW, OPE, MWP, EST, IEE-EMT [detail] 2015-07-16
13:00
Hokkaido Kushiro City Lifelong Learning Center A Study of a 400MHz-6GHz High Linearity GaN Low Noise Amplifier
Yo Yamaguchi, Takana Kaho, Munenari Kawashima, Kazuhiro Uehara (NTT) EMT2015-12 MW2015-50 OPE2015-24 EST2015-16 MWP2015-15
It is necessary to know the status of frequency usage for white space usage. Therefore, it is necessary that the low noi... [more] EMT2015-12 MW2015-50 OPE2015-24 EST2015-16 MWP2015-15
pp.23-27
RCS, SR, SRW
(Joint)
2015-03-04
14:30
Tokyo Tokyo Institute of Technology [Panel Discussion] Research and Development of Spectrum Sensing Technologies for Efficient Use of Frequency
Kazuhiro Uehara (NTT) SR2014-120 SRW2014-46
Along with the rapid popularization of mobile, wearable, and M2M terminals and devices, the use of radio spectrum has be... [more] SR2014-120 SRW2014-46
p.59(SR), p.7(SRW)
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