The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Hideichi Sasaoka - One of the best experts on this subject based on the ideXlab platform.
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Estimation of Received Signal at Arbitrary Remote Location Considering Propagation Characteristics
2018 IEEE International Workshop on Electromagnetics:Applications and Student Innovation Competition (iWEM), 2018Co-Authors: Yuto Nishitsuji, Hisato Iwai, Hideichi SasaokaAbstract:An estimation method of a received signal at a Remote Location using array antenna has been studied. The previous studies have shown that high estimation accuracy can be obtained assuming a multipath environment where a limited number of waves having uniform intensities arrive to a receiver. In this paper, we evaluate the estimation accuracy assuming a multipath environment where a number of waves having nonuniform intensities arrive to a receiver considering propagation.
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Extension of a received signal estimation method at a Remote Location to a 3-dimensional space
2016Co-Authors: Shunsuke Abe, Hisato Iwai, Hideichi SasaokaAbstract:An estimation method of a received signal at a Remote Location has been studied in a 2-dimensional space. The estimation method provided good estimation accuracy. In this paper, we expand the applicable environment to a 3-dimensional space. This paper shows a new estimation method for applying to a 3-dimensional space. In addition, we present the evaluation results of the estimation performance of the method when the assumed environment and the parameters of the estimation system are varied.
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Estimation of received signals at arbitrary Remote Locations based on estimation of arriving waves by compressed sensing
2016Co-Authors: Tomoya Sugimoto, Hisato Iwai, Hideichi SasaokaAbstract:Propagation characteristics have locality in a multipath fading environment. The locality is utilized for various techniques using radio wave. Recently, on the other hand, new techniques to break the locality have been studied. In the techniques, received signals at arbitrary Locations are estimated from Remote receiving points. We present in this paper a new estimation technique of received signals utilizing Compressed Sensing (CS). In the technique, we estimate directions of arrival and each complex amplitude of arriving waves by CS, and calculate a received signal at a Remote Location based on the estimated results. We present the technique and evaluate the estimation performance through computer simulations.
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A received signal estimation method at an arbitrary Remote Location
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014Co-Authors: Makoto Tanaka, Hisato Iwai, Hideichi SasaokaAbstract:Various applications utilizing the locality of the fading characteristics have recently been developed. In contrast, if received signal at a Remote Location can be estimated beyond the correlation distance of the multipath fading environment, a wide variety of new applications becomes possible. In this paper we present an estimation method of the received signal at an arbitrary Remote Location. We also discuss the estimation performance of the method by computer simulations.
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Estimation of received signal at an arbitrary Remote Location using MUSIC method
2014 IEEE International Workshop on Electromagnetics (iWEM), 2014Co-Authors: Makoto Tanaka, Hisato Iwai, Hideichi SasaokaAbstract:Various applications utilizing the locality of the fading characteristics have recently been developed. In case we estimate received signal beyond the spatial correlation distance of the fading characteristics, a variety of new applications can be imagined. In this paper we propose a method to estimate received signal at an arbitrary Remote Location. The MUSIC method and the Least squares method are utilized to estimate the received signal. We present the details of the proposed method and evaluate the estimation performance by computer simulations quantitatively.
Hisato Iwai - One of the best experts on this subject based on the ideXlab platform.
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Estimation of Received Signal at Arbitrary Remote Location Considering Propagation Characteristics
2018 IEEE International Workshop on Electromagnetics:Applications and Student Innovation Competition (iWEM), 2018Co-Authors: Yuto Nishitsuji, Hisato Iwai, Hideichi SasaokaAbstract:An estimation method of a received signal at a Remote Location using array antenna has been studied. The previous studies have shown that high estimation accuracy can be obtained assuming a multipath environment where a limited number of waves having uniform intensities arrive to a receiver. In this paper, we evaluate the estimation accuracy assuming a multipath environment where a number of waves having nonuniform intensities arrive to a receiver considering propagation.
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Extension of a received signal estimation method at a Remote Location to a 3-dimensional space
2016Co-Authors: Shunsuke Abe, Hisato Iwai, Hideichi SasaokaAbstract:An estimation method of a received signal at a Remote Location has been studied in a 2-dimensional space. The estimation method provided good estimation accuracy. In this paper, we expand the applicable environment to a 3-dimensional space. This paper shows a new estimation method for applying to a 3-dimensional space. In addition, we present the evaluation results of the estimation performance of the method when the assumed environment and the parameters of the estimation system are varied.
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Estimation of received signals at arbitrary Remote Locations based on estimation of arriving waves by compressed sensing
2016Co-Authors: Tomoya Sugimoto, Hisato Iwai, Hideichi SasaokaAbstract:Propagation characteristics have locality in a multipath fading environment. The locality is utilized for various techniques using radio wave. Recently, on the other hand, new techniques to break the locality have been studied. In the techniques, received signals at arbitrary Locations are estimated from Remote receiving points. We present in this paper a new estimation technique of received signals utilizing Compressed Sensing (CS). In the technique, we estimate directions of arrival and each complex amplitude of arriving waves by CS, and calculate a received signal at a Remote Location based on the estimated results. We present the technique and evaluate the estimation performance through computer simulations.
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A received signal estimation method at an arbitrary Remote Location
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014Co-Authors: Makoto Tanaka, Hisato Iwai, Hideichi SasaokaAbstract:Various applications utilizing the locality of the fading characteristics have recently been developed. In contrast, if received signal at a Remote Location can be estimated beyond the correlation distance of the multipath fading environment, a wide variety of new applications becomes possible. In this paper we present an estimation method of the received signal at an arbitrary Remote Location. We also discuss the estimation performance of the method by computer simulations.
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Estimation of received signal at an arbitrary Remote Location using MUSIC method
2014 IEEE International Workshop on Electromagnetics (iWEM), 2014Co-Authors: Makoto Tanaka, Hisato Iwai, Hideichi SasaokaAbstract:Various applications utilizing the locality of the fading characteristics have recently been developed. In case we estimate received signal beyond the spatial correlation distance of the fading characteristics, a variety of new applications can be imagined. In this paper we propose a method to estimate received signal at an arbitrary Remote Location. The MUSIC method and the Least squares method are utilized to estimate the received signal. We present the details of the proposed method and evaluate the estimation performance by computer simulations quantitatively.
Sylvie Turri - One of the best experts on this subject based on the ideXlab platform.
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Hilbert Transform-Based Bearing Failure Detection in DFIG-Based Wind Turbines
International Review of Electrical Engineering, 2011Co-Authors: Yassine Amirat, Mohamed Benbouzid, Vincent Choqueuse, Sylvie TurriAbstract:Cost-effective, predictive and proactive maintenance of wind turbines assumes more importance with the increasing number of installed wind farms in more Remote Location (offshore). A well-known method for assessing impeding problems is to use current sensors installed within the wind turbine generator. This paper describes then an approach based on the generator stator current data collection and attempts to highlight the use of the Hilbert transform for failure detection in a doubly-fed induction generator-based. Indeed, this generator is commonly used in modern variable-speed wind turbines. The proposed failure detection technique has been validated experimentally regarding bearing failures. Indeed, a large fraction of wind turbine downtime is due to bearing failures, particularly in the generator and gearbox.
Gi Gab Yoon - One of the best experts on this subject based on the ideXlab platform.
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Active use of DFIG-based variable-speed wind-turbine for voltage regulation at a Remote Location
IEEE Transactions on Power Systems, 2007Co-Authors: Hee-sang Ko, Gi Gab YoonAbstract:Renewable energy sources are presently exempted from control functions. This, in turn, simplifies the requirements for the renewable energy source interconnection as well as the project developer, allowing connection to the system without having to take part in the overall stabilization effort. Thus, in order to maintain the power generation and consumption balance, necessary for stable functioning of the power system, the traditional power plants always exert necessary control actions. However, the present practice requires the independent power producers and/or generators who want to connect to the grid to meet the so-called connection requirements of the local electric utility (the grid company). Therefore, this paper proposes an innovative reactive power control scheme for voltage regulation at a Remote Location that manipulates dynamically the reactive power from the voltage source converter (VSC) with taking into account its operating state and limits.
N.r. Rao - One of the best experts on this subject based on the ideXlab platform.
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Wind-powered electric water-pumping system installed in a Remote Location
Applied Energy, 2000Co-Authors: Zaher Al Suleimani, N.r. RaoAbstract:In December 1996, the country's first wind-powered, electric water-pumping system was successfully installed at the Ministry of Water Resources (MWR) Heelat Ar Rakah Camp, a Remote Location some 900 kilometres south of Muscat, the capital city of Oman. A weather-monitoring station comprising temperature, wind speed/direction, humidity and barometric pressure equipment was also installed to investigate the relationship between weather conditions and power output. Both systems are still in operation and are providing valuable data for analysis. This paper investigates the pump's output at different wind speeds and monthly water output against average wind velocity and compares the results with the design output values provided by the system manufacturer. Problems encountered in meeting the irrigation requirements at the camp during periods of low wind are discussed and solutions proposed. The potential of utilizing surplus energy generated during periods of high wind is under investigation. The paper concludes by assessing and analysing the role of wind power amongst other renewable energy sources, in the abstraction and desalination of groundwater supplies.
