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

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Indoors radio channel simulator 室内无线电信道模拟器
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-08-01 DOI: 10.1109/CONIEL.2005.45
G. F. S. Moya, J. Flores, D. J. Zamudio
{"title":"Indoors radio channel simulator","authors":"G. F. S. Moya, J. Flores, D. J. Zamudio","doi":"10.1109/CONIEL.2005.45","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.45","url":null,"abstract":"We have developed a program to obtain, by simulation, the impulse response of the indoor wideband radio channel. The program generates a sequence, in successive runs, of channel impulse responses, over different transmitter-receiver separation distances. The amplitudes, delays and phases are generated; based on a statistical model, the model parameters of the paths arriving at the receiver are introduced by the user, matching the simulation to the desired environment. The transmitter and receiver antenna gains, the operating wavelength and the receiver sensitivity are also user entries. The program is implemented in MATLab/spl trade/ 6.5 and it has a user-friendly interface, operating by means of easy to use menus, where the user introduces the parameters and data. As result, one simulator run obtains an impulse response graphic, amplitudes vs. arrival times, and a file that contains, in a results table, amplitude, arrival time and phase for every simulated path. Successive runs obtain, in other results tables, the radio channel parameters, such as total multipath gain, path loss, RMS delay spread and excess delay.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122326238","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
A novel method of matrix channel estimation for MIMO system [3G mobile communications] MIMO系统中矩阵信道估计的一种新方法[3G移动通信]
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-04-18 DOI: 10.1109/CCNC.2005.1405246
Zhi-hui Yu, Weilin Wu
{"title":"A novel method of matrix channel estimation for MIMO system [3G mobile communications]","authors":"Zhi-hui Yu, Weilin Wu","doi":"10.1109/CCNC.2005.1405246","DOIUrl":"https://doi.org/10.1109/CCNC.2005.1405246","url":null,"abstract":"In order to solve the bottle-neck problem of the downlink capacity of the third generation mobile communications system, MIMO schemes become more and more important in HSDPA. We propose a novel channel estimation method for a MIMO system under mobile deep-fading environment. We present detailed theoretical deduction and simulation results.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122996944","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
Notice of Violation of IEEE Publication PrinciplesUnited optimization of transceivers used in multiuser MIMO wireless system 违反IEEE发布原则的通知多用户MIMO无线系统中收发器的联合优化
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-03-02 DOI: 10.1109/CONIEL.2005.68
Zhi-hui Yu, Weilin Wu
{"title":"Notice of Violation of IEEE Publication PrinciplesUnited optimization of transceivers used in multiuser MIMO wireless system","authors":"Zhi-hui Yu, Weilin Wu","doi":"10.1109/CONIEL.2005.68","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.68","url":null,"abstract":"We consider multiuser wireless transmissions with multiple transmit antennas and multiple receive antennas. Every user multiplexes its symbols through its own linear precoder before being transmitted. In order to enhance the system performance by a system-level mean squared error rule, we propose algorithms to jointly optimize the linear precoders at each transmitter and linear decoders at each receiver Simulation results show that our novel algorithm has a faster convergence speed.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122201224","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
Novel algorithm for motion prediction invariant to rotation and occlusion 一种不受旋转和遮挡影响的运动预测算法
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.53
O. Starostenko, T. Tello, A. Ramírez, A. Zehe
{"title":"Novel algorithm for motion prediction invariant to rotation and occlusion","authors":"O. Starostenko, T. Tello, A. Ramírez, A. Zehe","doi":"10.1109/CONIEL.2005.53","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.53","url":null,"abstract":"A novel algorithm for motion estimation and prediction of objects in dynamic scenes by processing a limited sequence of images is presented in this paper. The proposed hybrid algorithm is based on computing differences between consecutive frames of video streams for fast detection of objects in motion by processing of their time-varying edges in real time applications. For quantitative prediction of motion and computing of its characteristics, the interpolation technique has been used in combination with the motion stabilization technique useful for analysis of irregular displacement of objects. The principal goal of the proposed algorithm is the design of simple but efficient facilities for motion prediction when the possible routes may be quickly computed even with occlusions and rotation. The introduced algorithm has been tested in order to evaluate its utility and performance.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"41 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":"124687257","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
Modified LMS algorithm for fast identification of digital channels 改进的LMS算法快速识别数字信道
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.50
W. Novotny, H. N. Ferrao, J. O. Pérez, Claudia F. Sayago
{"title":"Modified LMS algorithm for fast identification of digital channels","authors":"W. Novotny, H. N. Ferrao, J. O. Pérez, Claudia F. Sayago","doi":"10.1109/CONIEL.2005.50","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.50","url":null,"abstract":"A new modified LMS algorithm, to adjust the coefficients of an adaptive digital filter, is presented. Starting from the basic LMS (least mean square) algorithm, the modified algorithm, LMSm, has been conceived in order to achieve, for a determined number of iterations, both properties in parallel: a faster convergence rate; a smaller final quadratic error than the LMS and nLMS algorithms. The underlying idea is its application to digital communication channel identification and later equalization, which requires a high frequency of operation. These properties have been analytically derived and its behaviour has been extensively verified. Both analytical and experimental results obtained by using the LMSm algorithm in standard digital channel models show the following important improvements: a higher velocity of convergence; a smaller mean squared error between the model identified by the system and the real channel parameters.","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":"123798217","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
EIT voltage changes on the human scalp due to brain stimulus 由于大脑刺激，EIT电压在人体头皮上发生变化
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.38
J. C. Murrieta-Lee, C. Pomfrett, P. Beatty, C. B. Mussel, R. Waterfall, N. Polydorides, H. McCann
{"title":"EIT voltage changes on the human scalp due to brain stimulus","authors":"J. C. Murrieta-Lee, C. Pomfrett, P. Beatty, C. B. Mussel, R. Waterfall, N. Polydorides, H. McCann","doi":"10.1109/CONIEL.2005.38","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.38","url":null,"abstract":"In this paper, preliminary experimental results are presented concerning the use of EIT for detecting changes within the human head. Non-invasive measurements were taken using a modified commercial EIT system to record voltage changes in 3 human subjects. In this experiment, auditory evoked response (AER) and visual evoked response (VER) were used as stimuli for brain activity. Analyses of illustrative raw data are presented for two different current drive electrode pairs, and preliminary samples of reconstructed images for simulated and real human data are shown.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"68 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":"121426262","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: 5
Multiagent architecture for telerobotics 远程机器人的多智能体体系结构
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.52
R. Montúfar-Chaveznava, José Alberto Méndez-Polanco
{"title":"Multiagent architecture for telerobotics","authors":"R. Montúfar-Chaveznava, José Alberto Méndez-Polanco","doi":"10.1109/CONIEL.2005.52","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.52","url":null,"abstract":"We present a robot architecture, based on multiagent technology, for robot teleoperation on the Internet. Intelligent agents are derived from agent theory and they are used to model simple rational behaviors in elaborated distributed applications. In particular, they are structured as multiagent systems based on the deliberative belief-desire-intention architecture. At present, multiagent system technology is employed in many applications because it is considered as a new software paradigm able to solve complex problems. On the other hand, robot teleoperation has arisen from the necessity to execute operations where it is difficult to put a human being due to constraints such as cost, safety or time. Considering robot teleoperation on the Internet is a complex problem, we have proposed and developed a multiagent architecture, where information streams, including video data and voice commands, transmitted on the Internet, are processed and managed using intelligent agents to execute successful tasks.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"26 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114011706","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: 4
Admission control of a stateless network: effective bandwidth approach 无状态网络的准入控制:有效的带宽方法
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.15
M. Angulo, D. T. Román, Marco Turrubiartes, D. M. Rodríguez
{"title":"Admission control of a stateless network: effective bandwidth approach","authors":"M. Angulo, D. T. Román, Marco Turrubiartes, D. M. Rodríguez","doi":"10.1109/CONIEL.2005.15","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.15","url":null,"abstract":"The paper describes an admission control general framework on a packet-based Internet environment. Each application is accepted based on its effective bandwidth, bandwidth requirement and network resources availability. This approach is applied on stateless networks; thus, resource reservation is not required. The core router does not distribute periodically QoS state information, so the network available resources are estimated by the incoming device by means of a local resource measurement. The main advantage of our proposed framework is the system scalability, because there are no extra-mechanisms to be implemented at the core routers rather than the incoming ones. Additionally, the admission mechanism avoids QoS degradation of previously accepted applications on the network path.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"12 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":"121925664","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
Approximate searching on compressed text 压缩文本的近似搜索
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.23
C. Pérez, C. F. Uribe, G. Navarro
{"title":"Approximate searching on compressed text","authors":"C. Pérez, C. F. Uribe, G. Navarro","doi":"10.1109/CONIEL.2005.23","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.23","url":null,"abstract":"The approximate searching problem on compressed text tries to find all the matches of a pattern in a compressed text, without decompressing it and considering that the match of the pattern with the text can have a limited number of differences. This problem has diverse applications in information retrieval, computational biology and signal processing, among others. One of the best solutions to this problem is to execute a multipattern search of a set of pieces of the pattern, followed by a local decompression and a direct verification in the decompressed areas. In this work an improvement to this solution concerning verification is presented, where instead of executing a decompression process and searching for the pattern, bit-parallel automata are constructed that recognize the pattern. In this way, we perform the entire searching process without decompressing the text and obtain competitive times, compared to decompressing text and searching it with the best existing algorithms.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"15 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":"121706988","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
Simulator of WCDMA procedures for educational purposes 模拟WCDMA程序的教育目的
15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05) Pub Date : 2005-02-28 DOI: 10.1109/CONIEL.2005.64
D. Patrón, L. G. Guerrero-Ojeda, José Miguel David Báez-López, V. Aquino
{"title":"Simulator of WCDMA procedures for educational purposes","authors":"D. Patrón, L. G. Guerrero-Ojeda, José Miguel David Báez-López, V. Aquino","doi":"10.1109/CONIEL.2005.64","DOIUrl":"https://doi.org/10.1109/CONIEL.2005.64","url":null,"abstract":"The paper presents a system designed and developed with a didactic purpose. This system simulates the communication and link procedures of WCDMA. The system simulates the RRC (radio resource control) connection procedures, radio bearer control procedures, cell change procedures and the inter-system handovers. The system developed is called WCDMA communication procedures simulator. It was developed using HTML and Macromedia Flash MX and it runs in both Microsoft Explorer and Netscape Navigator environments.","PeriodicalId":367791,"journal":{"name":"15th International Conference on Electronics, Communications and Computers (CONIELECOMP'05)","volume":"3 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":"132972602","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
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