Papers - YAMAZATO Takaya

A Study on the Signal Sensitivity of Stochastic Resonance Receiver for the Subthreshold Bi-Polar Pulse Detection

H. Tanaka, K. Chiga, T. Yamazato, Y. Tadokoro, S. Arai

Enginnering Sciences Society Conference of IEICE   ( A-2-14 ) page： p. 33   2013.9

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Implementation of Bi-Polar Pulse SR Receiver Using Schmitt Trigger and Evaluation of its Performance Reviewed

K.Chiga, H.Tanaka, T.Yamazato, Y.Tadokoro, S.Arai

2013 International Symposium on Nonlinear Theory and its Application(NOLTA 2013)     page： -   2013.9

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We consider an application of Stochastic Resonance to wireless communication system. Stochastic Resonance (SR) is well known as a phenomenon in which weak signal in nonlinear system can be detected by added noise. A receiver using Stochastic Resonance (SR Receiver) can detect a weak signal which is not detectable in the conventional receiver. In this paper, we consider the implementation of bi-polar pulse SR Receiver using Schmitt Trigger and evaluate the performance in Signal-to-Noise Ratio (SNR) and Bit Error Rate (BER).

[Invited Talk] Application of visible light communication to LED traffic light

T. Yamazato

Proceeding of 2013 Annual Conference of IEIJ     page： -   2013.9

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A Study on Implementation of Stochastic Resonance Receiver using Schmitt Trigger Reviewed

CHIGA Keita, TANAKA Hiroya, YAMAZATO Takaya, TADOKORO Yukihiro, ARAI Shintaro

Proceedings of the Society Conference of IEICE   Vol. 2013   page： 32   2013.9

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

CiNii Research

A Study on the Signal Sensitivity of Stochastic Resonance Receiver for the Subthreshold Bi-Polar Pulse Detection Reviewed

TANAKA Hiroya, CHIGA Keita, YAMAZATO Takaya, TADOKORO Yukihiro, ARAI Shintaro

Proceedings of the Society Conference of IEICE   Vol. 2013   page： 33   2013.9

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

CiNii Research

Let's Search IEICE Contents through New Meta-Data System I-Scover!

T. Yamazato

IEICE Global Plaza   Vol. No.55   page： -   2013.8

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IEICE launched the new metadata search system called "I-Scover" on April 3, 2013. For the time being, I-Scover provides the metadata search service of all papers published in IEICE transactions covering from the first edition published in 1968 up to the present edition, Technical Reports (from 2006) and international conference papers of ISPA and EMC. The total number of searchable contents reaches 150,000. This article briefly introduces I-Scover. Before going to the details, let me start with a quiz. What phrase do you guess if you say "I-Scover" for three times?

Lectures in Nagoya University OCW that providing play and learning experiences Reviewed

T. Yamazato

2013 JSEE Annual Conference     page： -   2013.8

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M-ary Modulation Method Using Separation of Chaotic Dynamics for Noncoherent Chaos Communications

S. Arai, Y. Nishio and T. Yamazato

The 26th Workshop on Circuits and Systems     page： -   2013.7

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Distance Estimation Scheme for Integrated V2I-VLC Simulating the Vibration of Driving Vehicle

A.OHMURA, T.YAMAZATO, H.OKADA, T. FUJII, T. YENDO, S. ARAI

Technical Report of IEICE   ( ASN2013-55 ) page： pp.41-46   2013.7

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In road-to-vehicle visible light communication data is transmitted toward moving vehicles from theLED array installed on roads. Robust data reception and fast communication are possible by using a high-speedcamera as it can reduce the vibration of vehicles. In this road-to-vehicle visible light communication, we proposean integrated system of communication and distance estimation by sending a known data pattern from the LEDarray. On issues which is distance estimation performance deterioration by the vibration of the running vehicle, tryto resolve them using the technique using the phase-only correlation method.

LED array acquisition method based on Spatio-temporal image in Road to Vehicle Visible Light Communication

S.Usui, T.Yamazato, S.Arai, T.Yendo, T.Fujii, H.Okada

Technical Report of IEICE   ( ASN2013-55 ) page： pp.47-52   2013.7

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In this paper, we focus attention on road-to-vehicle visible light communication(R2V-VLC) in intelligent transport systems. This system uses an LED array as a transmitter and a high-speed camera as a receiver. To implement R2V-VLC, it is necessary to acquire the target LED array from the captured images at receiver before data demodulation. To achieve accurate aquisition, we analyze LED array by use of Spatio-temporal image. As the result of the analysis, we show the LED array in the spatio-temporal image has high time-gradient value and low space-gradient value. After that we propose a new LED array acquisition method using such characteristic gradient values.

LED array acquisition method based on Spatio-temporal image in Road to Vehicle Visible Light Communication Reviewed

USUI Syunsuke, YAMAZATO Takaya, ARAI Shintaro, YENDO Tomohiro, FUJII Toshiaki, OKADA Hiraku

IEICE technical report   Vol. 113 ( 129 ) page： 19 - 24   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In this paper, we focus attention on road-to-vehicle visible light communication(R2V-VLC) in intelligent transport systems. This system uses an LED array as a transmitter and a high-speed camera as a receiver. To implement R2V-VLC, it is necessary to acquire the target LED array from the captured images at receiver before data demodulation. To achieve accurate acquisition, we analyze LED array by use of Spatio-temporal image. As the result of the analysis, we show the LED array in the spatio-temporal image has high time-gradient value and low space-gradient value. After that we propose a new LED array acquisition method using such characteristic gradient values.

Distance Estimation Scheme for Integrated V2I-VLC Simulating the Vibration of Driving Vehicle Reviewed

OHMURA Akihiro, YAMAZATO Takaya, OKADA Hiraku, FUJII Toshiaki, YENDO Tomohiro, ARAI Shintaro

IEICE technical report   Vol. 113 ( 129 ) page： 13 - 17   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In road-to-vehicle visible light communication data is transmitted toward moving vehicles from the LED array installed on roads. Robust data reception and fast communication are possible by using a high-speed camera as it can reduce the vibration of vehicles. In this road-to-vehicle visible light communication, we propose an integrated system of communication and distance estimation by sending a known data pattern from the LED array. On issues which is distance estimation performance deterioration by the vibration of the running vehicle, try to resolve them using the technique using the phase-only correlation method.

LED array acquisition method based on Spatio-temporal image in Road to Vehicle Visible Light Communication Reviewed

USUI Syunsuke, YAMAZATO Takaya, ARAI Shintaro, YENDO Tomohiro, FUJII Toshiaki, OKADA Hiraku

IEICE technical report   Vol. 113 ( 131 ) page： 27 - 32   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In this paper, we focus attention on road-to-vehicle visible light communication(R2V-VLC) in intelligent transport systems. This system uses an LED array as a transmitter and a high-speed camera as a receiver. To implement R2V-VLC, it is necessary to acquire the target LED array from the captured images at receiver before data demodulation. To achieve accurate acquisition, we analyze LED array by use of Spatio-temporal image. As the result of the analysis, we show the LED array in the spatio-temporal image has high time-gradient value and low space-gradient value. After that we propose a new LED array acquisition method using such characteristic gradient values.

Distance Estimation Scheme for Integrated V2I-VLC Simulating the Vibration of Driving Vehicle Reviewed

OHMURA Akihiro, YAMAZATO Takaya, OKADA Hiraku, FUJII Toshiaki, YENDO Tomohiro, ARAI Shintaro

IEICE technical report. ASN, Ambient intelligence and sensor networks   Vol. 113 ( 132 ) page： 41 - 45   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In road-to-vehicle visible light communication data is transmitted toward moving vehicles from the LED array installed on roads. Robust data reception and fast communication are possible by using a high-speed camera as it can reduce the vibration of vehicles. In this road-to-vehicle visible light communication, we propose an integrated system of communication and distance estimation by sending a known data pattern from the LED array. On issues which is distance estimation performance deterioration by the vibration of the running vehicle, try to resolve them using the technique using the phase-only correlation method.

Distance Estimation Scheme for Integrated V2I-VLC Simulating the Vibration of Driving Vehicle Reviewed

OHMURA Akihiro, YAMAZATO Takaya, OKADA Hiraku, FUJII Toshiaki, YENDO Tomohiro, ARAI Shintaro

Technical report of IEICE. RCS   Vol. 113 ( 130 ) page： 55 - 59   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In road-to-vehicle visible light communication data is transmitted toward moving vehicles from the LED array installed on roads. Robust data reception and fast communication are possible by using a high-speed camera as it can reduce the vibration of vehicles. In this road-to-vehicle visible light communication, we propose an integrated system of communication and distance estimation by sending a known data pattern from the LED array. On issues which is distance estimation performance deterioration by the vibration of the running vehicle, try to resolve them using the technique using the phase-only correlation method.

Distance Estimation Scheme for Integrated V2I-VLC Simulating the Vibration of Driving Vehicle Reviewed

OHMURA Akihiro, YAMAZATO Takaya, OKADA Hiraku, FUJII Toshiaki, YENDO Tomohiro, ARAI Shintaro

IEICE technical report   Vol. 113 ( 131 ) page： 21 - 25   2013.7

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Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In road-to-vehicle visible light communication data is transmitted toward moving vehicles from the LED array installed on roads. Robust data reception and fast communication are possible by using a high-speed camera as it can reduce the vibration of vehicles. In this road-to-vehicle visible light communication, we propose an integrated system of communication and distance estimation by sending a known data pattern from the LED array. On issues which is distance estimation performance deterioration by the vibration of the running vehicle, try to resolve them using the technique using the phase-only correlation method.

LED array acquisition method based on Spatio-temporal image in Road to Vehicle Visible Light Communication Reviewed

USUI Syunsuke, YAMAZATO Takaya, ARAI Shintaro, YENDO Tomohiro, FUJII Toshiaki, OKADA Hiraku

IEICE technical report. ASN, Ambient intelligence and sensor networks   Vol. 113 ( 132 ) page： 47 - 52   2013.7

　More details

Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In this paper, we focus attention on road-to-vehicle visible light communication(R2V-VLC) in intelligent transport systems. This system uses an LED array as a transmitter and a high-speed camera as a receiver. To implement R2V-VLC, it is necessary to acquire the target LED array from the captured images at receiver before data demodulation. To achieve accurate acquisition, we analyze LED array by use of Spatio-temporal image. As the result of the analysis, we show the LED array in the spatio-temporal image has high time-gradient value and low space-gradient value. After that we propose a new LED array acquisition method using such characteristic gradient values.

LED array acquisition method based on Spatio-temporal image in Road to Vehicle Visible Light Communication Reviewed

USUI Syunsuke, YAMAZATO Takaya, ARAI Shintaro, YENDO Tomohiro, FUJII Toshiaki, OKADA Hiraku

Technical report of IEICE. RCS   Vol. 113 ( 130 ) page： 61 - 66   2013.7

　More details

Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electronics, Information and Communication Engineers  

In this paper, we focus attention on road-to-vehicle visible light communication(R2V-VLC) in intelligent transport systems. This system uses an LED array as a transmitter and a high-speed camera as a receiver. To implement R2V-VLC, it is necessary to acquire the target LED array from the captured images at receiver before data demodulation. To achieve accurate acquisition, we analyze LED array by use of Spatio-temporal image. As the result of the analysis, we show the LED array in the spatio-temporal image has high time-gradient value and low space-gradient value. After that we propose a new LED array acquisition method using such characteristic gradient values.

Performance Evaluation of Stochastic Resonance Receiver for the Multi Carrier Detection Reviewed

H. Tanaka, K. chiga, T. Yamazato, Y, Tadokoro, S. Arai

NANOENERGY2013   ( pp.58-59 ) page： -   2013.7

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Stochastic Resonance (SR), known as a noise-enhanced phenomenon, can improve the performance of communication systems. By applying SR in the receiver, it is possible to detect a weak signal that is not detectable in the traditional linear receiver. In the SR systems, the input of multi-carrier has not ever been discussed. So this paper proposes the SR receiver for multi-carrier detection and evaluates its Bit-Error-Rate (BER) performance.

Discover IEICE Contents Using I-Scover

T. Yamazato

  Vol. 37   page： -   2013.6

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The IEICE launched new metadata search system called I-Scover (http://i-scover.ieice.org) from April 3rd, 2013. I-Scover provides metadata search of the IEICE transactions papers (from its first edition published in 1968), Technical Reports (from 2006) and international conference papers of ISPA and EMC. The total of the contents that can be searched is more than 150,000.This article briefly introduces I-Scover. Before going to detail, let me start with a quiz. What phrase do you guess if you say I-Scover for three times?