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Realisation of convolutional decoders
Šicner, Jiří ; Burda, Karel (referee) ; Němec, Karel (advisor)
This work deals with convolution codes. The work is divided into several parts. The introductory part contains basic description of convolution codes, their properties and distribution. There are briefly outlined some methods of decoding convolution codes. Another part of the proposal includes a specific code according to the award and implementation of decoder for this code. Then the full proposal is verified here by using Matlab Simulink. The last part includes a proposal for printed circuit encoder and decoder.
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Comparison of decoding algorithms of Reed-Solomon code
Šicner, Jiří ; Krajsa, Ondřej (referee) ; Šilhavý, Pavel (advisor)
The work deals with the encoding and decoding of Reed-Solomon codes. There is generally described algebraic decoding of Reed-Solomon codes, and then described four methods of decoding, namely Massey-Berlekamp algorithm, Euclidean algoritus, Peterson-Gorenstein-Zierler algorithm and the direct method. These methods are then compared, and some of them are implemented in Matlab.
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Light diffraction and interference in laboratory exercises
Dvořák, Tomáš ; Šicner, Jiří (referee) ; Škarvada, Pavel (advisor)
The main purpose of this semestral project is suggestion and construction the laboratory task for measuring interference and diffraction of light, which would be teached in laboratory of physics. According to gained informations about optical phenomenon, the physical construction of the laboratory task was made. Subsequently the CMOS camera was connected and installed. There was also developed a software for controlling this camera. Software is able to control all supported functions of camera, capture and save samples from live recording and show the intensity decomposition of captured images. The most important function of developed software is ability to measure distances between particular diffraction local extremes.
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Characterization of Secondary Created Structures in PN Junctions of Silicon Solar Cells
Šicner, Jiří ; Číp, Ondřej (referee) ; Navrátil, Vladislav (referee) ; Koktavý, Pavel (advisor)
This thesis describes the study and characterization of secondary created structures in PN junction of silicon solar cells. Secondary created structure is the term which means the structures created for the purpose of suppressing the negative influence of local defects and edges of the solar cell. This means in particular laser notches used to isolate the edges. Furthermore, the secondary created structure means modification defective area using focused ion beam milling. Theoretical part of this work deals with short introduction to the topic of solar cells. There are mentioned the physical nature of the solar cell and the technology associated with the issue of solar cells. Experimental section begins with a description of the experimental methods. For diagnostic methods were used both electrical (UI characteristics, noise characteristics) and optical methods (measuring local radiation - CCD camera, thermal imager, lock-in thermography). Furthermore, there was also used a scanning electron microscope (SEM) equipped with technology using Focused Ion Beam (FIB). Sequentially there are presented individual results of characterization of created structures by laser. These partial results are incorporated into a comprehensive methodology developed for characterizing laser-created structures. The experimental part is finished by a presentation of the results of the research use of focused ion beam technology for sputtering defective areas of solar cells.
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Light diffraction and interference in laboratory exercises
Dvořák, Tomáš ; Šicner, Jiří (referee) ; Škarvada, Pavel (advisor)
The main purpose of this semestral project is suggestion and construction the laboratory task for measuring interference and diffraction of light, which would be teached in laboratory of physics. According to gained informations about optical phenomenon, the physical construction of the laboratory task was made. Subsequently the CMOS camera was connected and installed. There was also developed a software for controlling this camera. Software is able to control all supported functions of camera, capture and save samples from live recording and show the intensity decomposition of captured images. The most important function of developed software is ability to measure distances between particular diffraction local extremes.
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Characterization of Secondary Created Structures in PN Junctions of Silicon Solar Cells
Šicner, Jiří ; Číp, Ondřej (referee) ; Navrátil, Vladislav (referee) ; Koktavý, Pavel (advisor)
This thesis describes the study and characterization of secondary created structures in PN junction of silicon solar cells. Secondary created structure is the term which means the structures created for the purpose of suppressing the negative influence of local defects and edges of the solar cell. This means in particular laser notches used to isolate the edges. Furthermore, the secondary created structure means modification defective area using focused ion beam milling. Theoretical part of this work deals with short introduction to the topic of solar cells. There are mentioned the physical nature of the solar cell and the technology associated with the issue of solar cells. Experimental section begins with a description of the experimental methods. For diagnostic methods were used both electrical (UI characteristics, noise characteristics) and optical methods (measuring local radiation - CCD camera, thermal imager, lock-in thermography). Furthermore, there was also used a scanning electron microscope (SEM) equipped with technology using Focused Ion Beam (FIB). Sequentially there are presented individual results of characterization of created structures by laser. These partial results are incorporated into a comprehensive methodology developed for characterizing laser-created structures. The experimental part is finished by a presentation of the results of the research use of focused ion beam technology for sputtering defective areas of solar cells.
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Realisation of convolutional decoders
Šicner, Jiří ; Burda, Karel (referee) ; Němec, Karel (advisor)
This work deals with convolution codes. The work is divided into several parts. The introductory part contains basic description of convolution codes, their properties and distribution. There are briefly outlined some methods of decoding convolution codes. Another part of the proposal includes a specific code according to the award and implementation of decoder for this code. Then the full proposal is verified here by using Matlab Simulink. The last part includes a proposal for printed circuit encoder and decoder.
|
|
|
Comparison of decoding algorithms of Reed-Solomon code
Šicner, Jiří ; Krajsa, Ondřej (referee) ; Šilhavý, Pavel (advisor)
The work deals with the encoding and decoding of Reed-Solomon codes. There is generally described algebraic decoding of Reed-Solomon codes, and then described four methods of decoding, namely Massey-Berlekamp algorithm, Euclidean algoritus, Peterson-Gorenstein-Zierler algorithm and the direct method. These methods are then compared, and some of them are implemented in Matlab.
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