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EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)最新文献

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Digital processing of touch signal - error probability 触摸信号的数字处理-误差概率
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938165
Z. Milivojevic, M. Mirkovic, M. Stefanovic
{"title":"Digital processing of touch signal - error probability","authors":"Z. Milivojevic, M. Mirkovic, M. Stefanovic","doi":"10.1109/EURCON.2001.938165","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938165","url":null,"abstract":"A new algorithm for digital processing of a touch signal is proposed. We consider the calculation of the error probability in the process of deciding on the existence of the optical infrared beam between the infrared transmitter and receiver. The error probability is calculated in the function of: (a) the ambient illumination simulated by the reflector placed a certain distance in front of the center of the touch interface; (b) window functions implemented in the algorithm for processing of the touch signal. The error probability is calculated for some classical, time-symmetrical as well as for some original, time-asymmetrical window functions.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125246519","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 DVD presentation for the support of teaching telecommunications protocols 支持教学电信协议的DVD演示
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938111
A. Kruscic, R. Slatinek, T. Kapus
{"title":"A DVD presentation for the support of teaching telecommunications protocols","authors":"A. Kruscic, R. Slatinek, T. Kapus","doi":"10.1109/EURCON.2001.938111","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938111","url":null,"abstract":"This paper describes a DVD (digital versatile disc) presentation for help in teaching telecommunications protocols. Our goal was to make the teaching of protocols more illustrative than it usually is when using material from textbooks or standards. We made films that show what happens when an ISDN subscriber calls another subscriber, which has two ISDN telephones. The films show the processes and signals that occur in the communication between the telephones and ISDN exchange, to which all the telephones are connected, when DSS1 (digital subscriber signalling system number 1) call control signalling is used.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129594717","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
An asymptotic blind time delay estimation 一种渐近盲时滞估计
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938125
H. Amindavar, M. Tabibian
{"title":"An asymptotic blind time delay estimation","authors":"H. Amindavar, M. Tabibian","doi":"10.1109/EURCON.2001.938125","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938125","url":null,"abstract":"This paper addresses a new approach to time-delay estimation based upon the autocorrelation estimator (AE) and asymptotic expansions especially in low SNR in a multipath channel. The following cases are considered for the estimation of time-delays: (1) different types of signals; (2) (non)-Gaussianity for signal and noise; and (3) (non)resolveability of the time-delays. The maximum likelihood estimator (MLE) and autocorrelation estimator (AE) are two computational tools that are used to determine the parameters of a multipath channel. MLE requires some a priori knowledge of the source signal and the channel; AE can be a blind estimator but it is more suitable for a simple propagation model (one extra path). The asymptotic expansion of the log-likelihood ratio is formed to provide a cost function to be extremized for the parameters of a multipath channel. The performance of this algorithm is examined for different signal-to-noise ratios and sample size.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877903","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
Cellular neural network to model and solve direct non-linear problems of steady-state heat transfer 细胞神经网络用于模拟和求解稳态传热的直接非线性问题
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938153
I. Krstić, B. Reljin, P. Kostic
{"title":"Cellular neural network to model and solve direct non-linear problems of steady-state heat transfer","authors":"I. Krstić, B. Reljin, P. Kostic","doi":"10.1109/EURCON.2001.938153","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938153","url":null,"abstract":"Different non-electric problems can be efficiently modeled and solved by using their electric counterparts. The paper describes an original method to model and solve the direct nonlinear problem of heat transfer in solids by using the cellular neural network (CNN). By modifying constitutive equations of the hear transfer which are nonlinear functions of temperature, it is possible to rearrange them to become linear functions of some new variable. Similarly, by slightly modifying an original Chua CNN we can establish direct analogy between rearranged hear transfer equations and those of the modified CNN. Consequently, different heat transfer process in solids, having an arbitrary shape, can be solved by using CNN.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126447791","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
ANN microcell electric field level prediction model 人工神经网络微电池电场水平预测模型
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.937780
A. Neskovic, N. Neskovic, D. Paunovic
{"title":"ANN microcell electric field level prediction model","authors":"A. Neskovic, N. Neskovic, D. Paunovic","doi":"10.1109/EURCON.2001.937780","DOIUrl":"https://doi.org/10.1109/EURCON.2001.937780","url":null,"abstract":"A new microcell prediction model for the mobile telephone environment is presented. The principles of popular feedforward neural networks are used to build the model. Utilising a new artificial neural network (ANN) model some important disadvantages of both deterministic and statistical models can be overcome. In order to build the model, extensive electric field level measurements (in the 900 MHz frequency band) were carried out in the city of Belgrade, for two different test transmitter locations. The comparison between the data obtained by the proposed electric field level prediction model and the independent measurement sets have shown that the proposed model is accurate (on the order of the local mean measurement uncertainty) and reliable. At the same time, the algorithm is simple, fast and suitable for computer implementation.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132373469","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
Possible problems and their solutions with IPv6 router announcement IPv6路由器公告中可能出现的问题及其解决方案
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.937767
K. Segaric, P. Knezevic, S. Dembitz
{"title":"Possible problems and their solutions with IPv6 router announcement","authors":"K. Segaric, P. Knezevic, S. Dembitz","doi":"10.1109/EURCON.2001.937767","DOIUrl":"https://doi.org/10.1109/EURCON.2001.937767","url":null,"abstract":"This work analyzes two problems that were found during testing one of the available IPv6 implementations. The first problem may cause IPv6 routing not to work even on a simple network that contains only two subnets (prefixes) if the end-stations are based on minimal IPv6 requirements. Since this problem is tied to terminology found in RFC2461, it is worth considering the cause of the problem. The second problem is related to suboptimal default router selection that may cause unnecessary redirect traffic. This work also suggests some methods to solve these problems.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132557652","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
Multiresolution images based on human visual system characteristic 基于人类视觉系统特征的多分辨率图像
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938140
Shexiang Ma, Guizhong Liu, Zhaowei Shang
{"title":"Multiresolution images based on human visual system characteristic","authors":"Shexiang Ma, Guizhong Liu, Zhaowei Shang","doi":"10.1109/EURCON.2001.938140","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938140","url":null,"abstract":"In digitizing, an image is usually sampled with an invariable frequency. For the high frequency part of the image, which plays an important role in the visual effect, the sampling is illogical. To overcome the limitation, the wavelet transform provides a multiresolution representation of an image. Incidentally, the resolution of an image can be decreased according to the human visual system characteristic. By reversion, based on the relativity among the wavelet subbands, the details of the higher resolution image are predicted by the details of the lower resolution image. So the higher resolution image is obtained by wavelet synthesis. Experimental results show that the scheme is feasible.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132593444","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
CTL and ACTL patterns CTL和ACTL模式
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938180
R. Meolic, T. Kapus, Z. Brezočnik
{"title":"CTL and ACTL patterns","authors":"R. Meolic, T. Kapus, Z. Brezočnik","doi":"10.1109/EURCON.2001.938180","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938180","url":null,"abstract":"Model checking has become a widely used technique for formal verification of concurrent systems, such as communication protocols. However its rise is still much restricted to scientists with high mathematical education because temporal logic formulae are difficult to understand and even more difficult to create. Therefore, many projects have been started to find out how computers can help engineers in specifying system properties. This paper reports on using patterns of temporal logic formulae, which facilitate the usage of model checking.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132444176","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
A comparative study of context free models of arithmetic coding 算术编码中上下文无关模型的比较研究
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938155
K. Soyjaudah, S. Ramsamy
{"title":"A comparative study of context free models of arithmetic coding","authors":"K. Soyjaudah, S. Ramsamy","doi":"10.1109/EURCON.2001.938155","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938155","url":null,"abstract":"The selection of the modeling paradigm to be used with any source code determines its resource requirement and compression performance. Context-free models of arithmetic coding with different types of modeling are implemented and compared with Huffman coding.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132629497","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
Effect of imperfect signal recovery on performance of QPSK communication system 信号不完全恢复对QPSK通信系统性能的影响
EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439) Pub Date : 2001-07-04 DOI: 10.1109/EURCON.2001.938135
M. Stefanovic, G. Djordjevic, I. Djordjevic
{"title":"Effect of imperfect signal recovery on performance of QPSK communication system","authors":"M. Stefanovic, G. Djordjevic, I. Djordjevic","doi":"10.1109/EURCON.2001.938135","DOIUrl":"https://doi.org/10.1109/EURCON.2001.938135","url":null,"abstract":"Summary form only given. The contribution of this paper is in determining the bit error probability in detecting a quaternary phase-modulated signal Gray coded after transmission over the Gaussian communication channel in the presence of cochannel interference when the phase locked loop (PLL) is used for the synchronization reference signal extraction, which is imperfect. The numerical results are determined on the basis of the nonlinear PLL model. This nonlinear PLL model is much more complex to analyze than the linear one, but frequently a PLL system must operate in such conditions where the external fluctuations due to the additive noise are so intense that classical linear PLL theory neither characterises adequately the loop performance nor explains the loop behaviour. On the basis of the obtained results the influences of the signal-to-noise ratio in the channel, the signal-to-noise ratio in the loop bandwidth, the interference-to-signal ratio and the loop parameter values to the performance of the communication system are evident. From the obtained results it is possible to calculate the needed signal power, the interference-to-signal ratio and the loop parameter values in order to achieve the desired error probability. We give an exact comparison between the performance of a BPSK system in the presence of noise, imperfect carrier signal recovery and the interference determined in Draca et al. (1990), and the performance of the QPSK system in the presence of the same negative influences determined in this paper.","PeriodicalId":205662,"journal":{"name":"EUROCON'2001. International Conference on Trends in Communications. Technical Program, Proceedings (Cat. No.01EX439)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128821552","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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