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Search Results: Conference Papers
 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 101件中 1~20件目  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
AP, RCS
(Joint)
2019-11-20
13:35
Saga Saga Univ. A Study on Low-Complexity Data Detection for Grant-Free Non-Orthogonal Multiple Access
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
 [more]
SR 2019-11-05
10:50
Overseas Rutgers University Inn & Conference Center, NJ, USA [Poster Presentation] Received-Power-Aware Frameless ALOHA for Grant-Free Non-Orthogonal Multiple Access
Masaru Oinaga, Shun Ogata, Koji Ishibashi (UEC)
 [more]
RCS 2019-10-24
09:55
Kanagawa YRP Yokosuka Research Park Theoretical Analysis on Grant-Free Non-Orthogonal Multiple Access Using Vector Approximate Message Passing
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
(To be available after the conference date) [more] RCS2019-179
pp.7-12
MIKA
(2nd)
2019-10-04
11:15
Hokkaido Hokkaido Univ. [Invited Lecture] Grant-Free Non-Orthogonal Multiple Access: Random Access in An Era of Internet-of-Things
Koji Ishibashi (Univ. of Electro-Communications)
 [more]
RCS, SAT
(Joint)
2019-08-22
09:50
Aichi Nagoya University Generalized Boosted Approximate Message Passing for Uplink Grant-Free Non-Orthogonal Multiple Access
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
In this paper, we propose low complexity active user detection (AUD), channel estimation (CE), and multiuser detection (... [more] RCS2019-148
pp.13-18
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-10
15:45
Osaka I-Site Nanba(Osaka) Robust Transmit Beamforming Design via Fractional Programming for Downlink Power-Domain NOMA Systems
Hiroki Iimori, Koji Ishibashi (UEC), Giuseppe Abreu (JUB)
Taking into account imperfect channel state information, we study a robust transmit beamforming design for downlink powe... [more] RCC2019-16 NS2019-49 RCS2019-106 SR2019-25 SeMI2019-25
pp.27-32(RCC), pp.37-42(NS), pp.31-36(RCS), pp.37-42(SR), pp.41-46(SeMI)
SeMI, RCS, NS, SR, RCC
(Joint)
2019-07-10
16:10
Osaka I-Site Nanba(Osaka) Boosted Approximate Message Passing for Uplink Grant-Free Non-Orthogonal Multiple Access
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
In this paper, we propose low complexity active user detection (AUD), channel estimation (CE), and multiuser detection (... [more] RCC2019-17 NS2019-50 RCS2019-107 SR2019-26 SeMI2019-26
pp.33-38(RCC), pp.43-48(NS), pp.37-42(RCS), pp.43-48(SR), pp.47-52(SeMI)
RCS 2019-06-21
10:20
Okinawa Miyakojima Hirara Port Terminal Building A Study on Energy-Efficient Design of Irregular Repetition Slotted ALOHA with Stochastic Power Control
Ryo Okabe, Masaru Oinaga, Shun Ogata, Koji Ishibashi (The Univ. of Electro-Communications)
Irregular repetition slotted ALOHA based on non-orthogonal multiple acces (IRSA-NOMA) utilizes stochastic power control ... [more] RCS2019-87
pp.291-296
RCS 2019-06-21
10:30
Okinawa Miyakojima Hirara Port Terminal Building A Study on Age-of-Information Minimization in Two-User Multiple Access Channel with Energy Harvesting
Naoya Hirosawa, Koji Ishibashi (The Univ. of Electro-Communications)
In this paper, two-user multiple access channel is investigated where users, namely sensor nodes (SNs), transmit their d... [more] RCS2019-88
pp.297-302
RCS 2019-06-21
15:00
Okinawa Miyakojima Hirara Port Terminal Building Channel Estimation and Data Detection for Grant-Free Multiple Access Using Vector Approximate Message Passing
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
In this paper, we propose joint channel estimation (CE) and multiuser detection (MUD) for the grant-free non-orthogonal ... [more] RCS2019-96
pp.347-352
IT 2018-12-18
14:50
Fukushima Spa Resort Hawaiians [Invited Talk] Theory and Practice of Wireless Communicatios with Stochastic Power Source
Koji Ishibashi (Unv. of Electro-Commun.)
This paper provides a brief survey of researches on wireless communications systems with energy harvesting as a stochast... [more] IT2018-32
pp.7-12
SR 2018-10-31
13:25
Overseas Mandarin Hotel, Bangkok, Thailand [Poster Presentation] Empirical Model of Distributed Photovoltaics for Energy-Harvesting Wireless Communications
Tatsuhiro Kawaguchi, Koji Ishibashi (Univ. of Electro-Comm.)
Wireless devices operated by energy harvesting have to stably work with limited and stochastic energy from the environme... [more] SR2018-84
pp.61-62
ASN, NS, RCS, SR, RCC
(Joint)
2018-07-13
16:15
Hokkaido Hakodate Arena Aggregate-Compression-Aided Subcarrier IQ Index Modulation with Discreteness-Aware Approximate Message Passing
Kazuya Ohira, Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications)
In this paper, we propose aggregate-compression-aided subcarrier in-phase/quadrature phase index modulation (AC-SIQIM). ... [more] RCS2018-128
pp.243-248
RCS 2018-06-20
13:50
Nagasaki Nagasaki University Design and Analysis of Wireless-Powered Communication Systems with Multiple Frequency Bands
Ryuhei Takahashi, Koji Ishibashi (The Univ. of Electro-Communications)
Signal-generator-based communication (SGC) and backscatter communication (BC) have been actively studied for wireless po... [more] RCS2018-37
pp.13-18
RCS 2018-06-21
11:00
Nagasaki Nagasaki University Compressed-Sensing-Aided Subcarrier IQ Index Modulation with Discreteness-Aware Fast Iterative Shrinkage-Thresholding Algorithm
Kazuya Ohira, Koji Ishibashi (The Univ. of Electro-Communications), Lajos Hanzo (Univ. of Southampton)
In this paper, we propose compressed-sensing (CS)-aided subcarrier in-phase/quadrature-phase index modulation (SIQIM) wi... [more] RCS2018-51
pp.95-100
RCS 2018-06-22
10:50
Nagasaki Nagasaki University Low-Complexity Code Search Method for Turbo Trellis-Coded Spatial Modulation Using Symbol-based EXIT Charts
Takanori Hara, Koji Ishibashi (The Univ. of Electro-Communications), Lajos Hanzo (Univ. of Southampton)
In this paper, we propose a low-complexity code search method for spatial modulation with turbo trellis-coding (SM-TTC) ... [more] RCS2018-70
pp.207-212
RCS 2018-06-22
11:00
Nagasaki Nagasaki University ZigZag Decodable Coded Slotted ALOHA
Masaru Oinaga, Shun Ogata, Koji Ishibashi (The Univ. of Electro-Communications)
We propose ZigZag decodable coded slotted ALOHA (ZDCSA) by applying ZigZag decoding (ZD) into ALOHA scheme with successi... [more] RCS2018-71
pp.213-218
SR 2018-05-25
10:00
Tokyo Tokyo big sight [Technology Exhibit] Batteryless Wireless Sensor Networks based on Energy-Neutral Receiver-Initiated (ENRI) MAC Protocol
Tatsuhiro Kawaguchi, Ryo Tanabe, Koji Ishibashi (UEC)
We have proposed energy-neutral receiver-initiated medium access control (ENRI MAC) protocol which is suitable for energ... [more] SR2018-20
pp.115-119
RCS, SR, SRW
(Joint)
2018-02-28
14:40
Kanagawa YRP [Encouragement Talk] Performance Evaluation of Energy-Efficient Random Sleep Protocol based on Distributed Coding in Dense Wireless Sensor Networks
Yuki Goto, Koji Ishibashi (The Univ. of Electro-Communications)
 [more] RCS2017-336
pp.107-111
RCS, SR, SRW
(Joint)
2018-03-02
15:25
Kanagawa YRP Filter Design and Performance Evaluation of Repeat-Accumulate Signal Codes based on Density Evolution
Manato Takai, Koji Ishibashi (UEC)
In this paper, we propose repeat-accumulate signal codes (RASC) as a simplest one of signal codes. Although the filter c... [more] RCS2017-400
pp.453-458
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