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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 122  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
CAS, CS 2024-03-15
13:50
Okinawa   Carrier frequency offset estimation for initial acquisition in MWHCDM
Masaki Kitagawa, Toshiharu Kojima (Univ of Electro-Communications) CAS2023-133 CS2023-126
Modified Walsh-Hadamard code division multiplexing (MWHCDM) is suitable for helicopter satellite communications, where t... [more] CAS2023-133 CS2023-126
pp.122-127
SIP, IT, RCS 2024-01-18
16:10
Miyagi
(Primary: On-site, Secondary: Online)
A Study on Codeword Assignment for Optical Code Division Multiple Access Using Level Division Multiplexing with Arbitrary Number of Layers
Tatsuma Matsunaga, Shinichiro Miyazaki, Kotoku Omura, Shigeyoshi Ohno (Polytechnic Univ.), Shoichiro Yamasaki (Hiroshima City Univ.), Tomoko K. Matsushima (Yokohama College of Commerce) IT2023-46 SIP2023-79 RCS2023-221
In this paper, we propose a codeword assignment method for optical code division multiple access using level division mu... [more] IT2023-46 SIP2023-79 RCS2023-221
pp.82-87
SR, UWT
(Joint)
2023-01-26
15:50
Tokyo Takanawa Campus, Tokai Univ.
(Primary: On-site, Secondary: Online)
Differential OFDM Software MODEMs for Underwater Acoustic Communications
Taichi Fujita, Kouichi Hashimoto, Hiroshi Kubo (Ritsumeikan Univ.)
It is well-known that underwater acoustic communications (UWACs) play an important role in underwater mobile communicati... [more]
IT, RCS, SIP 2023-01-25
14:10
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Differential OFDM with Parallel Blind Demodulation Employing Different Re-Samplers for Underwater Acoustic Communications
Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) IT2022-63 SIP2022-114 RCS2022-242
Underwater acoustic communications (UWAC) suffer from double selectivity, where doubly-selective channels suffer from se... [more] IT2022-63 SIP2022-114 RCS2022-242
pp.196-201
RCS 2022-06-16
10:00
Okinawa University of the Ryukyus, Senbaru Campus and online
(Primary: On-site, Secondary: Online)
Secure Precoded OFDM Transmission Using Randomized Unitary Matrix
Naoki Isono, Kengo Ando, Koji Ishibashi (UEC) RCS2022-42
This paper considers a network consisting of a base station (BS), a legitimate user equipment (UE), and an eavesdropper ... [more] RCS2022-42
pp.108-113
IT, ISEC, RCC, WBS 2022-03-10
11:10
Online Online A Study on Initial Acquisition of WHCDM Signals with Roll-Off Pulse Shaping
Ojiro Komatsu, Toshiharu Kojima (UEC) IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71
WHCDM (Walsh-Hadamard Code Division Multiplexing) is suitable for helicopter satellite communications, where rotor blade... [more] IT2021-96 ISEC2021-61 WBS2021-64 RCC2021-71
pp.84-88
IT, ISEC, RCC, WBS 2022-03-10
11:35
Online Online An Initial Acquisition Scheme with Improved Carrier Frequency Offset Tolerance for MWHCDM
Yota Yamamura, Toshiharu Kojima (UEC) IT2021-97 ISEC2021-62 WBS2021-65 RCC2021-72
MWHCDM (modified Walsh-Hadamard code division multiplexing) is suitable for helicopter satellite communications, where r... [more] IT2021-97 ISEC2021-62 WBS2021-65 RCC2021-72
pp.89-94
RCS, SIP, IT 2022-01-20
11:20
Online Online A study on application of differential trellis-coded OFDM employing multiple differential detection with channel prediction
Kota Iwamoto, Hiroshi Kubo (Ritsumeikan Univ.) IT2021-32 SIP2021-40 RCS2021-200
This paper discusses differential orthogonal frequency division multiplexing (OFDM) for severe time and frequency select... [more] IT2021-32 SIP2021-40 RCS2021-200
pp.24-29
RCS, SIP, IT 2022-01-20
14:30
Online Online A Study on Estimating Received Light Intensity of Synchronous Optical CDMA System Using Level Division Multiplexing.
Ayari Kamikata, Shinichiro Miyazaki, Kotoku Omura, Shigeyoshi Ohno (PTU), Shoichiro Yamasaki (Hiroshima City Univ.), Tomoko K. Matsushima (Yokohama College of Commerce) IT2021-51 SIP2021-59 RCS2021-219
Synchronous optical code division multiple access (CDMA) using an appropriate interference elimination method with the e... [more] IT2021-51 SIP2021-59 RCS2021-219
pp.125-130
RCS, SAT
(Joint)
2021-08-26
11:00
Online Online Encoding and Decoding of Polar Codes for Frequency Selective Fading Channels
Song Huiying, Fukawa Kazuhiko, Chang Yuyuan (Tokyo Tech) RCS2021-99
Recently, the polar code has attracted much attention because it has been adopted as a channel coding for control channe... [more] RCS2021-99
pp.1-6
RCS, SAT
(Joint)
2021-08-26
16:40
Online Online BLER Performance of Circular 256QAM Schemes Considering Cubic Metric for DFT-Precoded OFDM
Yugo Sasaki, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2021-108
This paper presents the average block error rate (BLER) performance of circular 256QAM schemes considering a peak-to-ave... [more] RCS2021-108
pp.45-50
RCS 2021-06-24
13:30
Online Online Comparison of Differential OFDM Systems Employing Multiple Differential Detection with Channel Prediction in Doubly Selective Channels
Taichi Fujita, Kota Iwamoto, Hiroshi Kubo (Ritsumeikan Univ.) RCS2021-56
In this paper, we compare the performance of differential orthogonal frequency division multiplexing (OFDM) for underwat... [more] RCS2021-56
pp.163-168
RCS, SR, SRW
(Joint)
2021-03-03
11:15
Online Online BLER of OFDM Using FTN Signaling with Turbo SIC Multiplying Symbol Estimate by Weighting Factor
Toshiharu Obara, Tsubasa Shobudani, Mamoru Sawahashi (Tokyo City Univ.), Yoshihisa Kishiyama (NTT DOCOMO) RCS2020-206
This paper proposes multiplying weighting factor of less than one to the interfering OFDM symbol estimate for turbo soft... [more] RCS2020-206
pp.19-24
SIP, IT, RCS 2021-01-22
14:00
Online Online Proposal of optical CDMA scheme multiplexing several shortened modified prime sequence codes
Kyohei Ono, Shoichiro Yamasaki, Tomoko K. Matsushima (Polytechnic Univ.) IT2020-105 SIP2020-83 RCS2020-196
In this paper, we propose a new synchronous optical code-division multiple access (CDMA) scheme using shortened generali... [more] IT2020-105 SIP2020-83 RCS2020-196
pp.235-240
IT 2020-12-03
15:10
Online Online Performance Evaluation for Optical CDMA Transmission Scheme with Level-Division Multiplexing
Ayari Kamikata, Kyohei Ono, Shinichiro Miyazaki, Shoichiro Yamasaki, Tomoko K. Matsushima, Kotoku Omura (Polytechnic Univ.) IT2020-58
Synchronous optical code-division multiple access (CDMA), which uses an modified prime sequence code as the spreading co... [more] IT2020-58
pp.183-188
CS 2020-11-05
16:00
Online Online + Central Community Center, Nonoichi Community Center
(Primary: Online, Secondary: On-site)
[Invited Talk] PAPR and OOBE Suppression of OFDM Signal Using AutoEncoder
Masaya Ohta, Reiya Kuwahara (OPU) CS2020-52
OFDM (Orthogonal Frequency Division Multiplexing) signals have characteristics of both high OOBE (Out-of-Band Emission) ... [more] CS2020-52
pp.30-34
AP 2020-10-02
14:00
Okinawa 2 sub sites and online
(Primary: On-site, Secondary: Online)
[Tutorial Lecture] Antenna Pattern Multiplexing for Receive Antennas with Massive Outputs and Reduced Cost
Masato Saito (Ryukyu Univ.) AP2020-72
We have been studied Antenna Pattern Multiplexing (APM) technique
suitable for receivers of Single-Input Multiple-Outp... [more]
AP2020-72
pp.23-28
SAT, RCS
(Joint)
2020-08-21
15:35
Online Online Differential trellis-coded OFDM employing multiple differential detection with channel prediction for severe doubly-selective environment
Kota Iwamoto, Tetsuro Kubo, Hiroshi Kubo (Ritsumeikan Univ.) RCS2020-89
This paper proposes differential trellis-coded orthogonal frequency division multiplexing (OFDM) for severe time and fre... [more] RCS2020-89
pp.55-60
RCS, SR, SRW
(Joint)
2020-03-05
14:50
Tokyo Tokyo Institute of Technology
(Cancelled but technical report was issued)
Investigation on Coding and Successive Cancellation Decoding for Polar Codes over Wireless Channels
Hayao Araki, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech.) RCS2019-369
Polar codes have been adopted as an error correction code for the control channel of the 5th generation mobile communica... [more] RCS2019-369
pp.251-256
IT, SIP, RCS 2020-01-24
09:55
Hiroshima Hiroshima City Youth Center Multi-Carrier Differential Trellis-Coded Modulation/Demodulation Employing Multiple Differential Detection with Channel Prediction
Tetsuro Kubo, Takuya Takahashi, Hiroshi Kubo (Ritsumeikan Univ.) IT2019-61 SIP2019-74 RCS2019-291
This paper proposes a modulation scheme employing multi-carrier (MC) differential trellis-coded modulation (DTCM) and mu... [more] IT2019-61 SIP2019-74 RCS2019-291
pp.143-148
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