{"title":"Data transmission network computer-to-computer study","authors":"P. Trafton, H. Blank, N. F. McAllister","doi":"10.1145/800281.811071","DOIUrl":"https://doi.org/10.1145/800281.811071","url":null,"abstract":"This study addresses the problems of designing a low undetected error rate (e. g., 10−8) communication system for the transmission of large quantities of computer data between two remote locations. The study effort includes a characterization of the interconnect channels, and an analysis, evaluation and recommendations for coding techniques. The channel characterization effort is directed toward producing a model of the interconnect links. The model is shown to be representative of real interconnect links based on a comparison with measured bit error data. The error correcting coding effort is directed toward the development and evaluation of forward error correcting (FEC) coding techniques based on generalized burst trapping codes. In addition, consideration is given to automatic repeat request (ARQ) error control. Several basic approaches to providing error control for the computer-to-computer data transmission channel are considered.","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128892771","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}
{"title":"The probable future of Canadian long haul digital data network connections with the U.S.A.","authors":"D. Atkinson, U. C. Strahlendorf","doi":"10.1145/800281.811047","DOIUrl":"https://doi.org/10.1145/800281.811047","url":null,"abstract":"This paper is intended to acquaint data users and network designers in the United States with the announced plans for a Canadian digital network which is expected to be optimized for data communications in Canada.\u0000 This paper is structured in two parts. The first discusses some futures of telecommunications in terms of information transfer, and reviews the objectives of the digital network which is to be built in Canada to optimize on each future. The second focuses on system designs focus optimizing the subset of information transfer which is today blanketed by the generic work “data”.\u0000 The latter part of this paper covers the technical outline of the Trans-Canada Telephone System Digital Data Network (TCTS/DDN) which was announced on March 8 1971. The first section now under construction will extend from Ottawa and Toronto to Calgary. It will be physically integrated with the existing microwave route. The TCTS/DDN will be extended coast to coast as the business develops.\u0000 The end points might be Halifax on the Atlantic and Vancouver on the Pacific (about 3500 miles). So there is plenty of opportunity to interconnect with a number of USA border points.","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131060753","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}
{"title":"An experimental distributed switching system to handle bursty computer traffic","authors":"W. D. Farmer, E. Newhall","doi":"10.1145/800165.805237","DOIUrl":"https://doi.org/10.1145/800165.805237","url":null,"abstract":"Data and encoded voice signals differ in certain characteristics which require, if switching is the goal, slightly different approaches. Some of the characteristics of digitized speech and data are compared\u0000 This paper describes an operating experimental system (three terminals) which switches messages of variable message length occurring at periodic and aperiodic rates, achieves fast access time, and accommodates bit rate inputs from teletypewriter (110 bits/sec) to disc transfer rates (4 × 10 6 bits/sec).","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134593471","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}
{"title":"Round robin scheduling in a computer communications system with finite swap time and statistically multiplexed arrivals","authors":"A. L. Dudick, C. Pack","doi":"10.1145/800281.811054","DOIUrl":"https://doi.org/10.1145/800281.811054","url":null,"abstract":"A study is made of the effect of asynchronous time division multiplexing (ATDM) on the performance of a computer-communications system. The study is based partly on analysis and partly on a simulation of a system model composed of the following subcomponents:\u0000 1. an M/D/1 queue for the ATDM, and\u0000 2. a “round robin” processor with finite (nonzero) “swap time” for the computer.\u0000 The study is an extension of previous work on the subject which assumed a less general model for the computer and was mostly concerned with the conditions for significant distortion of the arrival process at the computer and an observable change in average total delay for a typical Job.\u0000 The results include a comparison of the delays encountered by a user request in the system as a whole and in the system subcomponents with and without ATDM. Further, there is a discussion of the effects of varying the parameters of the subsystems on the performance of both the computer subsystem and the computer-communications system as a whole. Finally, there is a warning that in a system with ATDM, under certain conditions, the time-sharing system becomes, effectively, a batch processing system.","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123968752","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}
{"title":"Polling in a multidrop communication system: Waiting line analysis","authors":"A. Konheim, B. Meister","doi":"10.1145/800281.811063","DOIUrl":"https://doi.org/10.1145/800281.811063","url":null,"abstract":"A communication system is considered which consists of buffered input terminals linked by means of a multidrop line to an output device. Data enters the system through the terminals and the service operation is the transfer of data units to the output device. The terminals are sequentially polled; each terminal holds the channel until its buffer is emptied. The input processes are assumed to be independent and to have stationary independent increments. The stationary queue length distribution is calculated.","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120811028","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}
{"title":"The German EDS network","authors":"H. Gabler","doi":"10.1145/800281.811057","DOIUrl":"https://doi.org/10.1145/800281.811057","url":null,"abstract":"This paper introduces the plans made by the German Telecommunication Administration for the setting up of a special data network within the near future. Starting from the present situation existing in the Federal Republic of Germany in the field of data transmission a description is given of the data network concept.\u0000 The essential technical characteristics and design considerations as well as the salient facilities are dealt with in a brief survey.","PeriodicalId":383824,"journal":{"name":"Symposium on Problems in the Optimization of Data Communications Systems","volume":"18 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114044623","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}