Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255028
Dingang Sheng, F. Qi
A full domain optimum neural network is proposed. A method of devising stable points firstly and basins of attraction latterly increases speed and correctness of image recognition. This paper proves the quality and speed of convergence and invariance of mapping. Several computer simulation examples involving trained and recognized targets illustrate the usefulness of the method.<>
{"title":"An FDO neural network model and its application to image recognition","authors":"Dingang Sheng, F. Qi","doi":"10.1109/ICCS.1992.255028","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255028","url":null,"abstract":"A full domain optimum neural network is proposed. A method of devising stable points firstly and basins of attraction latterly increases speed and correctness of image recognition. This paper proves the quality and speed of convergence and invariance of mapping. Several computer simulation examples involving trained and recognized targets illustrate the usefulness of the method.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115398774","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255047
P. Kam, P. Sinha
Using the approach of simultaneous ML estimation of digital sequence and unknown carrier phase, the authors develop a new suboptimum ML soft decoder which achieves coherent detection performance if the carrier phase is time-invariant. This decoder does not require any explicit recovery of coherent references, involves only linear operations in the metric computation, and can be implemented efficiently using a Viterbi decoder structure. It is applied to the ML estimation of a convolutionally/trellis coded MPSK sequence, as well as an uncoded MPSK sequence.<>
{"title":"Coherent detection of coded/uncoded MPSK sequences over the Gaussian channel with unknown carrier phase using a Viterbi decoder","authors":"P. Kam, P. Sinha","doi":"10.1109/ICCS.1992.255047","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255047","url":null,"abstract":"Using the approach of simultaneous ML estimation of digital sequence and unknown carrier phase, the authors develop a new suboptimum ML soft decoder which achieves coherent detection performance if the carrier phase is time-invariant. This decoder does not require any explicit recovery of coherent references, involves only linear operations in the metric computation, and can be implemented efficiently using a Viterbi decoder structure. It is applied to the ML estimation of a convolutionally/trellis coded MPSK sequence, as well as an uncoded MPSK sequence.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123465493","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255038
Wu Minjin
This paper synthesizes the results of entropy functions extended, proposes the entropy spectrum function of data (or signal) and discusses the application in multi-measure fractal and multi-fractal dimensional spectrum features.<>
{"title":"Entropy spectrum and its application in fractal measurement","authors":"Wu Minjin","doi":"10.1109/ICCS.1992.255038","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255038","url":null,"abstract":"This paper synthesizes the results of entropy functions extended, proposes the entropy spectrum function of data (or signal) and discusses the application in multi-measure fractal and multi-fractal dimensional spectrum features.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124485471","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.254951
C. Li, P.C.K. Liu
Although many approaches have been proposed for multimedia communications, few are suitable for small business offices. A low cost multimedia communications system model which was developed by P.C.K. Liu and C.Y. Li (see Proc. 13/sup th/ Int. Telecom. Symposium, ROC, vol.3, p.121-5, 1992) is reviewed, and the performances of the system for different traffic handling approaches are evaluated. The result shows that 'Movable channel capacity boundaries' is the most suitable method for the system model.<>
{"title":"A low cost multimedia communications system performance model","authors":"C. Li, P.C.K. Liu","doi":"10.1109/ICCS.1992.254951","DOIUrl":"https://doi.org/10.1109/ICCS.1992.254951","url":null,"abstract":"Although many approaches have been proposed for multimedia communications, few are suitable for small business offices. A low cost multimedia communications system model which was developed by P.C.K. Liu and C.Y. Li (see Proc. 13/sup th/ Int. Telecom. Symposium, ROC, vol.3, p.121-5, 1992) is reviewed, and the performances of the system for different traffic handling approaches are evaluated. The result shows that 'Movable channel capacity boundaries' is the most suitable method for the system model.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123468600","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255180
Y. Akaiwa, T. Nomura, S. Minami
The performance of the integrated voice and data radio access system is improved by using the capture effect. To apply the capture effect, two methods are proposed, one is to increase power for voice-restart-packets and the other is to increase the power of data packets at random. The performance is analyzed by computer simulation with voice signals gathered from real telephone conversations. The delay vs. throughput performance is significantly improved with both the two methods.<>
{"title":"An integrated voice and data radio access system-performance improvement with capture effect","authors":"Y. Akaiwa, T. Nomura, S. Minami","doi":"10.1109/ICCS.1992.255180","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255180","url":null,"abstract":"The performance of the integrated voice and data radio access system is improved by using the capture effect. To apply the capture effect, two methods are proposed, one is to increase power for voice-restart-packets and the other is to increase the power of data packets at random. The performance is analyzed by computer simulation with voice signals gathered from real telephone conversations. The delay vs. throughput performance is significantly improved with both the two methods.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123611376","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.254933
Keita Yamada, S. Yabashi, Masayasu
The authors discuss microcalcification observed in a mammograph which is important in diagnosis of early breast cancer. After emphasizing the digitized mammograph images by Laplacian operation, a threshold processing was applied to extract the microcalcifications. Although microcalcification opacity exists for both malignant and benign cases, there were differences in the distribution and the numbers of opaque points. To give a quantitative expression for the microcalcification, the data were evaluated by using fractal dimension. As a result of processing 25 cases, including 10 benign cases, up to 14 out of 15 malignant cases were able to be separated using the fractal dimension.<>
{"title":"Quantitative expression of microcalcification distribution in mammograph by using fractal dimension","authors":"Keita Yamada, S. Yabashi, Masayasu","doi":"10.1109/ICCS.1992.254933","DOIUrl":"https://doi.org/10.1109/ICCS.1992.254933","url":null,"abstract":"The authors discuss microcalcification observed in a mammograph which is important in diagnosis of early breast cancer. After emphasizing the digitized mammograph images by Laplacian operation, a threshold processing was applied to extract the microcalcifications. Although microcalcification opacity exists for both malignant and benign cases, there were differences in the distribution and the numbers of opaque points. To give a quantitative expression for the microcalcification, the data were evaluated by using fractal dimension. As a result of processing 25 cases, including 10 benign cases, up to 14 out of 15 malignant cases were able to be separated using the fractal dimension.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123669871","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255167
M. Takeuchi, A. Kajiwara, M. Nakagawa
A tracking scheme employing two tracking modes is proposed and its usefulness is confirmed by computer simulations. The simulation results show that the proposed scheme leads to a great improvement of the jitter performance in multipath fading channels.<>
{"title":"2-mode delay lock loop for mobile communications","authors":"M. Takeuchi, A. Kajiwara, M. Nakagawa","doi":"10.1109/ICCS.1992.255167","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255167","url":null,"abstract":"A tracking scheme employing two tracking modes is proposed and its usefulness is confirmed by computer simulations. The simulation results show that the proposed scheme leads to a great improvement of the jitter performance in multipath fading channels.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122711079","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.254978
K. Saleh, H. Ural
The authors introduce a new communication interface, the switch-computer service interface (SCSI) which provides a standard interface for the interworking between communication switches and host computers. Such an interface will widen the spectrum of accessible value-added services across communication networks. As a result, SCSI allows the implementation of a variety of computer-based telecommunications applications. For example, users would be able to select and connect to a variety of information services using a single interactive access device. SCSI is formally specified in Estelle which is one of ISO's standard formal description techniques.<>
{"title":"Definition of a switch-computer service interface in Estelle","authors":"K. Saleh, H. Ural","doi":"10.1109/ICCS.1992.254978","DOIUrl":"https://doi.org/10.1109/ICCS.1992.254978","url":null,"abstract":"The authors introduce a new communication interface, the switch-computer service interface (SCSI) which provides a standard interface for the interworking between communication switches and host computers. Such an interface will widen the spectrum of accessible value-added services across communication networks. As a result, SCSI allows the implementation of a variety of computer-based telecommunications applications. For example, users would be able to select and connect to a variety of information services using a single interactive access device. SCSI is formally specified in Estelle which is one of ISO's standard formal description techniques.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125807035","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.255072
M. Itami, K. Itoh, M. Hatori
An optimization of the number of active taps of the transversal adaptive digital filter is examined. The optimal number changes in each stage of convergence.<>
研究了横向自适应数字滤波器有效抽头数的优化问题。每个收敛阶段的最优数都在变化
{"title":"A study on optimization of the number of taps of multipath distortion canceller in convergence process","authors":"M. Itami, K. Itoh, M. Hatori","doi":"10.1109/ICCS.1992.255072","DOIUrl":"https://doi.org/10.1109/ICCS.1992.255072","url":null,"abstract":"An optimization of the number of active taps of the transversal adaptive digital filter is examined. The optimal number changes in each stage of convergence.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126070507","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}
Pub Date : 1992-11-16DOI: 10.1109/ICCS.1992.254968
S.C. Park, Y. Lee, W. Tsai
The authors introduce a new ATM switch architecture based on banyan interconnection networks. Its hardware is less complex than that of an output queueing switch. The reduction in the hardware complexity can be obtained without either losing the self-routing property or suffering from performance degradation under uniform and nonuniform traffic. The switch is constructed with shift network. It has an internal buffer that is interconnected in the banyan networks. The shift networks allow a cell to be sent to the correct output port. It needs only the destination address to route a cell regardless of the state of the switch. Although the switch becomes blocking, it retains the self-routing property and achieves the maximum throughput of 100% with only small additional delay.<>
{"title":"Performance analysis of banyan shift ATM switch","authors":"S.C. Park, Y. Lee, W. Tsai","doi":"10.1109/ICCS.1992.254968","DOIUrl":"https://doi.org/10.1109/ICCS.1992.254968","url":null,"abstract":"The authors introduce a new ATM switch architecture based on banyan interconnection networks. Its hardware is less complex than that of an output queueing switch. The reduction in the hardware complexity can be obtained without either losing the self-routing property or suffering from performance degradation under uniform and nonuniform traffic. The switch is constructed with shift network. It has an internal buffer that is interconnected in the banyan networks. The shift networks allow a cell to be sent to the correct output port. It needs only the destination address to route a cell regardless of the state of the switch. Although the switch becomes blocking, it retains the self-routing property and achieves the maximum throughput of 100% with only small additional delay.<<ETX>>","PeriodicalId":223769,"journal":{"name":"[Proceedings] Singapore ICCS/ISITA `92","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130143427","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}
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