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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 20  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)		 2018-02-28
10:50		 Kanagawa YRP Comparisons on Differential Space-Time Coding Schemes with Channel Prediction for Fast Time-Varying Channels
Hiroshi Kubo, Toshiki Mori, Akinobu Murayama, Takuma Yamagashi, Nanase Yumoto (Ritsumeikan Univ.) RCS2017-330		 This paper compares differential space-time coding (DSTC) schemes employing channel prediction for fast time-varying cha... [more] RCS2017-330
pp.75-80
RCS, SR, SRW
(Joint)		 2018-02-28
17:50		 Kanagawa YRP An Off-Line Software Modem for Multi-Carrier Acoustic Communications
Hiroshi Kubo, Masashi Takemura, Akinobu Murayama, Souichiro Morita, Nanase Yumoto, Toshiki Mori, Takuma Yamagishi (Ritsumeikan Univ.) RCS2017-344		 This paper discusses an off-line software modem for multi-carrier acoustic communications. Acoustic communications, e.g.... [more] RCS2017-344
pp.155-160
RCS, SR, SRW
(Joint)		 2018-02-28
18:10		 Kanagawa YRP Channel Sounders Employing Modified M Sequence for Doubly-Selective Acoustic Channels
Hiroshi Kubo, Souichiro Morita, Akinobu Murayama, Nanase Yumoto, Mai Nakatsuka, Kouki Nakatsukasa (Ritsumeikan Univ.) RCS2017-345		 In order to improve channel sounding performance, this paper discusses channel sounders employing the modified M sequenc... [more] RCS2017-345
pp.161-166
ITS, WBS, RCC 2017-12-14
13:30		 Okinawa Tiruru/Okinawa Jichikaikan [Poster Presentation] A Channel Simulator Using Modified M Sequence
Kouki Nakatsukasa, Masashi Takemura, Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) WBS2017-50 ITS2017-27 RCC2017-66		 This paper discusses a channel simulator in order to simulate acoustic channels with computer. Acoustic communications s... [more] WBS2017-50 ITS2017-27 RCC2017-66
pp.85-88
ITS, WBS, RCC 2017-12-14
13:30		 Okinawa Tiruru/Okinawa Jichikaikan [Poster Presentation] Acoustic Communications Employing Differential OFDM
Yusuke Matsumoto, Masashi Takemura, Souichiro Morita, Akinobu Murayama, Takuma Yamagishi, Hiroshi Kubo (Ritsumeikan Univ.) WBS2017-51 ITS2017-28 RCC2017-67		 This paper discusses OFDM (Orthogonal Frequency Division Multiplexing) with differential encoding assuming on acoustic c... [more] WBS2017-51 ITS2017-28 RCC2017-67
pp.89-93
ITS, WBS, RCC 2017-12-14
13:30		 Okinawa Tiruru/Okinawa Jichikaikan [Poster Presentation] Acoustic Communications Employing Spread Spectrum Using Inaudible Frequency Band
Yuuki Yasuda, Masashi Takemura, Mai Nakatsuka, Keiji Yamada, Shota Nagano, Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) WBS2017-52 ITS2017-29 RCC2017-68		 This paper discusses basic performance of spread spectrum communications for acoustic communications. This spread spectr... [more] WBS2017-52 ITS2017-29 RCC2017-68
pp.95-99
ITS, WBS, RCC 2017-12-14
13:30		 Okinawa Tiruru/Okinawa Jichikaikan [Poster Presentation] Acoustic Communications Employing Single Carrier Block Transmission
Hiroyuki Nakamura, Ryuki Sano, Masashi Takemura, Mai Nakatsuka, Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) WBS2017-53 ITS2017-30 RCC2017-69		 This paper discusses performance of single carrier block transmission using frequency domain equalization (FDE) for acou... [more] WBS2017-53 ITS2017-30 RCC2017-69
pp.101-105
RCS 2017-06-23
09:40		 Okinawa Ishigaki Shoukou Kaikan An Off-Line Software MODEM Employing Commercial Acoustic Electronic Equipment and its Field Evaluation Results
Masashi Takemura, Souichiro Morita, Nanase Yumoto, Akinobu Murayama (Ritsumeikan Univ.), Hiromu Kondo (JR East), Hiroshi Kubo (Ritsumeikan Univ.) RCS2017-78		  [more] RCS2017-78
pp.167-172
RCS 2017-06-23
09:50		 Okinawa Ishigaki Shoukou Kaikan Performance Improvement Schemes of Channel Sounders Using M Sequences for Acoustic Communications
Mai Nakatsuka, Kouki Nakatsukasa, Souichiro Morita, Akinobu Murayama (Ritsumeikan Univ.), Tadashi Kondo (JR East), Hiroshi Kubo (Ritsumeikan Univ.) RCS2017-79		  [more] RCS2017-79
pp.173-178
RCS, SR, SRW
(Joint)		 2017-03-03
11:15		 Tokyo Tokyo Institute of Technology A MIMO Channel Sounder for Double Selective Acoustic Communications and its Applications to Channel Simulators
Hiroshi Kubo, Akinobu Murayama, Souichirou Morita, Nanase Yumoto, Mai Nakatsuka, Masashi Takemura, Yusuke Matsumoto, Kouki Nakatsukasa (Ritsumeikan Univ.) RCS2016-326		 This paper discusses channel sounding techniques for acoustic communications. Underwater acoustic communications and lan... [more] RCS2016-326
pp.205-210
SAT, RCS
(Joint)		 2016-08-18
10:20		 Miyagi Tohoku Gakuin University Joint Estimation Schemes of Channel Impulse Responses and Noises Using M Sequences for Underwater Acoustic Channels
Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-131		 This paper proposes a joint estimation scheme of time-varying channel impulse responses (CIR) and noises using M sequenc... [more] RCS2016-131
pp.13-18
SAT, RCS
(Joint)		 2016-08-18
10:45		 Miyagi Tohoku Gakuin University Spread Spectrum Acoustic Communications Using Water Current Sounds for their Spreading Codes
Keiji Yamada, Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-132		 This paper proposes spread spectrum acoustic communications using natural water current sounds for their spreading codes... [more] RCS2016-132
pp.19-23
SAT, RCS
(Joint)		 2016-08-19
12:40		 Miyagi Tohoku Gakuin University Multiple Differential Detection Employing First-Order Channel Prediction Based on Per-Survivor Processing for Fast Time-Varying Channels
Nanase Yumoto, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-149		 This paper proposes multiple differential detection based on per-survivor processing (PSP-MDD) employing first-order cha... [more] RCS2016-149
pp.113-118
SAT, RCS
(Joint)		 2016-08-19
13:05		 Miyagi Tohoku Gakuin University Decision-Feedback Block Differential Detection for M-ary PSK
Akinobu Murayama, Nanase Yumoto, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-150		 This paper discusses performance of decision-feedback block differential detection (DFBDD) for differential space-time b... [more] RCS2016-150
pp.119-124
RCS, RCC, ASN, NS, SR
(Joint)		 2016-07-20
16:15		 Aichi   Differential MIMO Spatial Multiplexing Employing PADM Based on Channel Prediction for Fast Time-Varying Channels
Toshiki Mori, Takuma Yamagishi, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-100		 This paper proposes a demodulation scheme based on channel prediction for differential multiple-input multiple-output (M... [more] RCS2016-100
pp.35-40
RCS, RCC, ASN, NS, SR
(Joint)		 2016-07-20
16:40		 Aichi   Non-Coherent MIMO PADM Transmit Divertity for P-MP Communications on the Fast Time-Varying Beat Interference
Takuma Yamagishi, Toshiki Mori, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2016-101		 This paper proposes point to multi-point (P-MP) communication systems for beat interference channels with large frequenc... [more] RCS2016-101
pp.41-46
RCS, IT, SIP 2016-01-18
13:40		 Osaka Kwansei Gakuin Univ. Osaka Umeda Campus Field Evaluation Results of Inaudible Frequency Band Acoustic Communications in Station Environment
Shigetoshi Yoshida, Kazuto Miura, Tetsuya Abe (JR East), Akinobu Murayama, Souichiro Morita, Nanase Yumuto, Takahide Ichikawa, Ritsuko Miyazaki, Hiroshi Kubo (Ritsumeikan Univ.) IT2015-72 SIP2015-86 RCS2015-304		 This paper discusses field evaluation results of inaudible frequency band ultra-sonic acoustic communications in JR East... [more] IT2015-72 SIP2015-86 RCS2015-304
pp.143-148
AP, RCS, WPT, SAT
(Joint)		 2015-11-06
10:20		 Okinawa Okinawa Prefectural Museum & Art Museum Off-Line Field Evaluation Systems Employing Acoustic Electronic Equipments for Under Water Acoustic Communications
Souichiro Morita, Akinobu Murayama, Nanase Yumoto, Hiroshi Kubo (Ritsumeikan Univ.) RCS2015-227		 This paper proposes structures of off-line field evaluation systems for under water acoustic communications (UWAC). The ... [more] RCS2015-227
pp.221-226
AP, RCS, WPT, SAT
(Joint)		 2015-11-06
10:55		 Okinawa Okinawa Prefectural Museum & Art Museum Channel Sounders for Under Water Acoustic Communications in the Presence of Double Selective Channel Environments
Akinobu Murayama, Souichiro Morita, Nanase Yumoto, Hiroshi Kubo (Ritsumeikan Univ.) RCS2015-231		 (To be available after the conference date) [more] RCS2015-231
pp.245-250
AP, RCS, WPT, SAT
(Joint)		 2015-11-06
11:20		 Okinawa Okinawa Prefectural Museum & Art Museum Bit Error Rate Performance of Single Carrier Differential QPSK/Differential Detection in Actual Under Water Acoustic Communications Environment
Nanase Yumoto, Souichiro Morita, Akinobu Murayama, Hiroshi Kubo (Ritsumeikan Univ.) RCS2015-232		 This paper discusses bit error rate (BER) performance of underwater acoustic communications (UWAC) in actual under water... [more] RCS2015-232
pp.251-256
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