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15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)最新文献

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Algorithm of clustering for color images segmentation 彩色图像分割的聚类算法
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.16
Pedro Martínez Galaviz, Arturo Rojas López, M. J. S. García, I. H. P. Torres
{"title":"Algorithm of clustering for color images segmentation","authors":"Pedro Martínez Galaviz, Arturo Rojas López, M. J. S. García, I. H. P. Torres","doi":"10.1109/CONIEL.2005.16","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.16","url":null,"abstract":"The problem of recognition of objects inside an image can be divided into two steps: the segmentation phase and classification of the objects. The cluster is a representative method of the segmentation technique that divides the pixels into different groups, based on properties of coherence and similarity. We propose a variation of the implementation of the cluster method based on density, OPTICS, which considers creation of clusters and the density of the points and develops a classification with regard to their parameters. In this method, we choose the color attribute as an important element to define a cluster; the color space considered is the HVC. The experiments were carried out with images that consider different situations; in most cases the results are close to what we expected, once a cluster is found the classification process can be done.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"211 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133340506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Performance study of space-time communications systems based on the VBLAST algorithm 基于VBLAST算法的时空通信系统性能研究
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.59
Karina Sosa, L. F. G. Pérez, M. Bazdresch, G. Rodriguez-Guisantes
{"title":"Performance study of space-time communications systems based on the VBLAST algorithm","authors":"Karina Sosa, L. F. G. Pérez, M. Bazdresch, G. Rodriguez-Guisantes","doi":"10.1109/CONIEL.2005.59","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.59","url":null,"abstract":"Capacity in wireless channels has become the prime aspect in mobile communications. Significant improvements are possible with MIMO channels, with the use of multiple antennas at both the transmitter and receiver. Reception in this type of channel is achieved with space-time coding by jointly designing channel coding, modulation and equalization, allowing an important increase in the throughput of bandlimited wireless channels. One of the most important space-time coding systems is the Bell-Labs layered space-time (BLAST) coding technique. Different variants of this algorithm exist, focusing on computational complexity reduction. One of these variants is the vertical BLAST algorithm which has different realizations depending on the way the signal processing at the receiver is performed. In this paper, an analysis of these realizations is presented from a performance-complexity standpoint. These variants are the singular-value decomposition, the sorted-QR decomposition and the least-square algorithm. It is shown that the latter presents the best performance/complexity trade-off.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125838690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design and construction of an antenna in the band of 1700 MHz, for the reception of meteorological images taken by satellites 设计及建造1700兆赫频带天线，以接收由卫星拍摄的气象图像
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.31
Jaime Gachupín Coatl, J. E. Flores-Mena
{"title":"Design and construction of an antenna in the band of 1700 MHz, for the reception of meteorological images taken by satellites","authors":"Jaime Gachupín Coatl, J. E. Flores-Mena","doi":"10.1109/CONIEL.2005.31","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.31","url":null,"abstract":"The paper presents the design and construction of a helical antenna for receiving information transmitted by geostationary satellites. The information is processed to obtain images of the type WEFAX (weather facsimile) with a resolution of 8 km and HRPT (high resolution picture transmission) of 1.1 km. The design of the antenna was carried out by means of a mathematical analysis of the theory of antennas (Kraus, J.D., \"Antennas\", McGraw-Hill, 1988); in this way, the antenna dimensions were obtained, and tests and adjustments were made so that the antenna has a better performance. Finally, we present the images obtained in the cases mentioned. The obtained images can be used for meteorological analysis.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128471857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
RF analysis applied to digital wireless receivers design 射频分析在数字无线接收机设计中的应用
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.62
J. Villarruel, D. S. Gómez, L. F. G. Pérez, A. Garcia
{"title":"RF analysis applied to digital wireless receivers design","authors":"J. Villarruel, D. S. Gómez, L. F. G. Pérez, A. Garcia","doi":"10.1109/CONIEL.2005.62","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.62","url":null,"abstract":"An RF analysis of wireless receivers is presented. Existing receiver architectures and RF design issues are studied to suggest a suitable method for wireless communications receiver design. Due to the limitations of portable equipment, such as limited battery life, the main focus on wireless receivers lies in power consumption and integration issues. In order to provide a method based on practical issues, RF receiver topologies, wireless standards, and RF system concepts are considered.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127895524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Remote car starter 遥控汽车起动器
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.61
David Jonathán Sandoval-Mercado, R. Rosas-Romero
{"title":"Remote car starter","authors":"David Jonathán Sandoval-Mercado, R. Rosas-Romero","doi":"10.1109/CONIEL.2005.61","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.61","url":null,"abstract":"This paper discusses the design and implementation of a \"remote car starter\"; this device is intended to allow a user to start his car from the house, office, or school. The goal is to set up a good temperature in the car, which is going to be possible thanks to the heater and air conditioning of the automobile. The benefits of having a \"remote starter\" are the following: starting the car from distance, and being able to set it up to run for 5, 10, or 15 minutes; entering a car that is hot in winter or cold in summer; taking care of the car, because it is always better to let the car warm up before driving. The paper explains the design of a \"remote starter\" for a 1995 Volkswagen Jetta, but the concepts explained are useful for any kind of car.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131320812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the approximation and synthesis of elliptic filters 椭圆滤波器的逼近与合成
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.55
J. Rufino, José Miguel David Báez-López, J. Rodríguez-Asomoza, L. G. Guerrero-Ojeda
{"title":"On the approximation and synthesis of elliptic filters","authors":"J. Rufino, José Miguel David Báez-López, J. Rodríguez-Asomoza, L. G. Guerrero-Ojeda","doi":"10.1109/CONIEL.2005.55","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.55","url":null,"abstract":"Electronic filters are one of the most important applications in the field of electronic systems, for their main function is to manipulate and modify the frequency spectrum of a given signal to obtain a required signal that represents a specific function that the system may require. The present paper offers the reader a brief explanation of the design software which was programmed using Matlab/spl reg/. The software allows the user to design analog filters and it gives the user the ease of designing such circuits without the need for any numerical calculations by introducing all the data through an interface.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131512869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Antenna radiation pattern estimation in 3D for indoor environments 室内环境下三维天线辐射方向图估计
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.21
Alejandro Aragón Zavala, Kostas Koulinas
{"title":"Antenna radiation pattern estimation in 3D for indoor environments","authors":"Alejandro Aragón Zavala, Kostas Koulinas","doi":"10.1109/CONIEL.2005.21","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.21","url":null,"abstract":"Various methods for estimating the radiation pattern of an antenna in 3D have been assessed with antenna measurements conducted at different angles in azimuth and elevation for two different in-building antenna types. The use of one of these methods for real coverage predictions is then analysed, as, for practical cellular designs, antenna manufacturers only provide two orthogonal cuts.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132143738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Power consumption management on FPGA FPGA的功耗管理
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.60
A. D. García, L. F. G. Pérez, Reynaldo Félix Acuña
{"title":"Power consumption management on FPGA","authors":"A. D. García, L. F. G. Pérez, Reynaldo Félix Acuña","doi":"10.1109/CONIEL.2005.60","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.60","url":null,"abstract":"During the last years, the number of hardware implementations based on field programmable gate arrays (FPGA) is increasing because it satisfies the high speed of system and hardware cost constraints. FPGA implementation allows the building of rapid prototypes reducing development times and board area. However, since FPGA has been improved to satisfy speed and size constraints, it is not evident that these devices can satisfy the low power consumption constraint. Compared to ASIC, FPGA are generally perceived as non-low-power consumption devices, whose only advantage is programmability and more recently dynamic reconfigurability. In this work we present a study of dynamic and static power consumption of FPGA that allows the designer to acquire a better understanding of how power consumption is generated and distributed inside the FPGA. Based on these results, a genetic algorithm is used to minimize critical long paths and optimize the internal resources during the place and route process in order to optimize power consumption while keeping a high performance.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132311923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Comparative study of two-valley models for space charge wave propagation in GaAs semiconductor films GaAs半导体薄膜中空间电荷波传播的双谷模型的比较研究
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.30
V. Grimalsky, Abel García, E. Gutiérrez
{"title":"Comparative study of two-valley models for space charge wave propagation in GaAs semiconductor films","authors":"V. Grimalsky, Abel García, E. Gutiérrez","doi":"10.1109/CONIEL.2005.30","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.30","url":null,"abstract":"A full comparative study of three models to describe the transport of carrier in GaAs is presented. These models were done by Tomizawa (1999), Shur (1993), and Rodrigues (1998), using the balance equations, where the two-valley model in which only the /spl gamma/-valley and the l-valley were taken into account. These models have been used to describe the space charge wave propagation in thin n-GaAs films. it has been demonstrated that sometimes the models of Shur and Rodrigues may lead to incorrect results. Essential peculiarities of the Tomizawa model has been put forward.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133601637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rough lymphocytes for approximate binding in artificial immune systems 人工免疫系统中用于近似结合的粗糙淋巴细胞
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.63
Reynaldo Félix Acuña, T. Ushio
{"title":"Rough lymphocytes for approximate binding in artificial immune systems","authors":"Reynaldo Félix Acuña, T. Ushio","doi":"10.1109/CONIEL.2005.63","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.63","url":null,"abstract":"This paper presents a novel approach to an artificial immune system, which uses the rough set theory to improve its classification ability under uncertainty in data. The proposed approach is mainly based on a negative selection algorithm and is suitable to solve problems where the knowledge of non-self is scarce and noisy. The rough set theory is used to deal with uncertainty in data and to obtain rule sets necessary to specify both self and non-self classes. The proposed artificial immune system is implemented with rough valued lymphocytes, which emulate the approximate binding performed by natural immune systems.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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