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Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation最新文献

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A hybrid-ARQ protocol with adaptive rate error control 一种自适应误码率控制的混合arq协议
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-12-25 DOI: 10.1109/TENCON.1993.327934
Hui Zhao, T. Sato, I. Kimura
{"title":"A hybrid-ARQ protocol with adaptive rate error control","authors":"Hui Zhao, T. Sato, I. Kimura","doi":"10.1109/TENCON.1993.327934","DOIUrl":"https://doi.org/10.1109/TENCON.1993.327934","url":null,"abstract":"This paper presents an adaptive rate error control scheme for digital communication over time-varying channels. The cyclic code with majority-logic decoding is used in a cascaded way as an inner code to create a simple and powerful hybrid-ARQ error control scheme. Inner code is used only for error correction and the outer code is used for both error correction and error detection. When an error is detected, retransmission is required. The unsuccessful packets are not discarded as with conventional schemes, but are combined with their retransmitted copies. Approximations for the throughput efficiency and the undetectable error probability are given. A high reliability coupled with a simple high-speed implementation makes it suitable for high data rate error control over both stationary and non-stationary channels. Adaptive error control scheme becomes the best solution for time-varying channels when the optimum code is selected according to the actual channel conditions to enhance the system performance. The main feature of this system is that the basic structure of the encoder and decoder need not be modified while the error-correction capability of the code increases. Results of a comparative analysis show that the proposed scheme outperforms other similar ARQ protocols.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129706670","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
Optimization of tap settings and capacitor units with expert system on distribution system 用专家系统对配电系统分接装置和电容单元进行优化
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320640
Mingtian Fan, Zuping Zhang, C.E. Lin
{"title":"Optimization of tap settings and capacitor units with expert system on distribution system","authors":"Mingtian Fan, Zuping Zhang, C.E. Lin","doi":"10.1109/TENCON.1993.320640","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320640","url":null,"abstract":"An expert system method for discrete VAr optimization on distribution system is presented in this paper. The expert system can aid the planning engineers to make an initial feasible solution, and to decide the position of transformer tap settings and the number of capacitor units. The proposed expert system combined with the mixed-integer programming (MIP) method can solve the discrete VAr planning problem. The tap setting optimization is discussed in detail. A numerical simulation using practical system conditions with significant results is demonstrated. The proposed method is effective to solve the VAr optimization problem.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115226801","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
Polynomial approximation based learning search 基于多项式近似的学习搜索
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320107
Wei Zhang, Shenggui Hong
{"title":"Polynomial approximation based learning search","authors":"Wei Zhang, Shenggui Hong","doi":"10.1109/TENCON.1993.320107","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320107","url":null,"abstract":"In this paper, polynomial approximation method and theory are introduced into the research of learning search of artificial intelligence. By so doing, a learning search algorithm can, after sufficient number of problem-solving, construct a heuristic estimate function h(.) which uniformly approximates to the optimal estimate function h*(.) by arbitrary precision. One of these learning search algorithms, A-B/sub n/, is described and it is shown that, when the number of the previous problem-solving becomes large enough, the worst-case complexity of A-B/sub n/ can be reduced to O(poly(N)), where N is the length of the optimal solution path, poly(N) is a polynomial function of N.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115384321","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
An expert system for ISO 9000 quality management system iso9000质量管理体系专家系统
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320084
L. L. Cheng, W.M. Tsang, K.L. Yeung
{"title":"An expert system for ISO 9000 quality management system","authors":"L. L. Cheng, W.M. Tsang, K.L. Yeung","doi":"10.1109/TENCON.1993.320084","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320084","url":null,"abstract":"The ISO 9000 quality management system is becoming more important for all sectors of industry. Due to the open door policy in China, managers are now aware of the significance of implementing the ISO 9000 quality assurance system in their companies or factories. However, the ISO 9000 quality system is new to a lot of people, so in order to train personnel to have a quick and thorough understanding of the ISO 9000 quality system standard, an expert system is often used. An ISO 9000 expert system is presented which is written in Prolog. It is rule-based and backward chained. The knowledge of this expert system came from a consultant in this domain. The system gives the user the percentage of conformance to a particular statement in the ISO 9001 standard and delivers a quality manual which the user can use to implement the ISO quality system.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"11 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115696317","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
Analysis of stability of an optical phase-locked loop 光锁相环的稳定性分析
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.328027
L. Qing, Ye Peida
{"title":"Analysis of stability of an optical phase-locked loop","authors":"L. Qing, Ye Peida","doi":"10.1109/TENCON.1993.328027","DOIUrl":"https://doi.org/10.1109/TENCON.1993.328027","url":null,"abstract":"Based on an improved model of an optical phase-locked loop (OPLL) and the rate equations of an external cavity semiconductor laser, the effects of OPLL feedback on the stability of the external cavity semiconductor laser are discussed. The conditions for the local laser working stably with the phase-locking feedback are established.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123051523","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
The design and implementation of a transmission interface between a host and a communication subnet 主机和通信子网之间传输接口的设计和实现
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320048
Shi Ronghua
{"title":"The design and implementation of a transmission interface between a host and a communication subnet","authors":"Shi Ronghua","doi":"10.1109/TENCON.1993.320048","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320048","url":null,"abstract":"This paper describes the theory of designing a parallel transmission interface circuit between a host and a communication subnet. It also gives a circuit diagram and drive instruction series applied to a particular system.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116634682","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 distributed intelligent robot system based on microcomputers 一种基于微机的分布式智能机器人系统
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320462
T. Hong, Kai Xia, Wenli Xu, Chongduan Chen, Lin Lu
{"title":"A distributed intelligent robot system based on microcomputers","authors":"T. Hong, Kai Xia, Wenli Xu, Chongduan Chen, Lin Lu","doi":"10.1109/TENCON.1993.320462","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320462","url":null,"abstract":"An intelligent robot system based on a distributed microcomputer system with five microprocessors is described. The improvement and extension of each processor are performed to build a real-time, but inexpensive intelligent robot system. Main efforts focus on the implementation of the system, system information classification and exchange, and function modules in each CPU. Shared information is divided into data base, knowledge base command area and status area. System functions are allocated to different processors to be executed in parallel. Experimental results show that the system is designed and implemented successfully and can be extended for further researches and practical applications.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"28 25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116694379","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
Parallelising image processing algorithms 并行图像处理算法
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320168
K.L. Chan, W. Tsui, H. Chan, H. Y. Wong, H. C. Lai
{"title":"Parallelising image processing algorithms","authors":"K.L. Chan, W. Tsui, H. Chan, H. Y. Wong, H. C. Lai","doi":"10.1109/TENCON.1993.320168","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320168","url":null,"abstract":"Multiprocessor machines provide increased computational power and memory capacity that can be used to achieve tasks involving large amounts of data, such as imaging. With multiprocessor machines, many sophisticated operations on image data can be accomplished within reasonable time constraints. In order to efficiently utilize multiprocessor machines, conventional image processing algorithms have to be parallelised. The design of parallel algorithms takes into account many considerations, e.g. interprocessor communication, load balancing, task division, task placement, scalability, network topology, etc. In this paper, the performance of some image processing algorithms running on a loosely-coupled multiprocessor machine is evaluated. The machine consists of a PC host computer and a multiprocessor network consisting of a number of transputers. The configuration of this transputer network is under software control and so different parallelisations of a particular algorithm can be tested on a particular network topology. Three image processing algorithms were selected for parallelisation. They are the Sobel edge operation, the fast Fourier transform and the Hough transform. Parallelism is achieved in various approaches, such as partitioning of tasks or partitioning of data. For a particular network configuration, the performance of different parallelisation approaches for each algorithm was assessed, based on the parallel processing time, overhead time, communication-to-computation ratio, efficiency, etc.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117056775","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
Adaptive multi-thresholds detection algorithms for finding little targets of maritime ship 船舶小目标自适应多阈值检测算法
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.320202
Qin Ling, M. Xiande
{"title":"Adaptive multi-thresholds detection algorithms for finding little targets of maritime ship","authors":"Qin Ling, M. Xiande","doi":"10.1109/TENCON.1993.320202","DOIUrl":"https://doi.org/10.1109/TENCON.1993.320202","url":null,"abstract":"A serious degradation of detection probability(P/sub d/) in a conventional cell-averaging constant alarm rate (CA-CFAR) detector is known to be caused by the presence of interfering targets in the set of reference cells. A new CFAR detection algorithm of multithreshold in which three tentative estimates of the noise level in the test cell are obtained by independently processing output of the leading and the lagging cells is proposed and studied. The performance of multi-threshold CFAR detector is analyzed in both a benign environment and in an environment of an arbitrary number of interferers in the sample set. A Rayleigh fluctuation target mode (Swerling Case I) is used as a model for the received signal. The results have been applied in Radar Station. The practical testing results show that the multi-thresholds detector has good performance.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127078386","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
Frequency domain median filtering for narrow band interference rejection in BPSK-PN signals BPSK-PN信号窄带干扰抑制的频域中值滤波
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation Pub Date : 1993-10-19 DOI: 10.1109/TENCON.1993.327926
F. Dominique, F. Joseph
{"title":"Frequency domain median filtering for narrow band interference rejection in BPSK-PN signals","authors":"F. Dominique, F. Joseph","doi":"10.1109/TENCON.1993.327926","DOIUrl":"https://doi.org/10.1109/TENCON.1993.327926","url":null,"abstract":"Narrow band interference suppression in direct sequence signals is a classic communication problem that has received much attention and numerous solutions have been proposed. The paper proposes the use of a non-linear transform domain modified median filter that offers several advantages over the other techniques. Detailed simulation has been carried out and some graphic results are shown.<<ETX>>","PeriodicalId":110496,"journal":{"name":"Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127311212","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
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