{"title":"Computer controlled, solid state audio switching system","authors":"G. E. Austin","doi":"10.1109/VTC.1978.1622574","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622574","url":null,"abstract":"An audio level (0 dBM), multiline matrix switching system was designed and built to provide the function of interconnecting two simultaneous users of a radio circuit on a demand basis. San Mateo County Comunications has arequirement to dynamically assign one of ten frequencies in any one of nine base tation radio transmitter/ receiver sets and connect a remote control point from any one of three hospitals (established as base hospitals) to that base station. The County Communications Dispatcher (one of the users) must also maintain control over the network by monitoring and restoring the network to a standby condition when the users are finished with it. This requirement stems from the Emergency Medical Services (EMS) communications plan which necessitates County-wide radio coverage in order to connect field (paramedic) teams to a doctor or MICU nurse at a base hospital. Capacity for three simultaneous paramedic-doctor communication links is required, each one independent of the other.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121800776","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":"Communication system doubles as a vehicle position transducer","authors":"W. Fredericks","doi":"10.1109/VTC.1978.1622559","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622559","url":null,"abstract":"The communication link between the wayside and vehicles in an Automated Guideway Transit (AGT) System is utilized to provide incremental position information. The guideway transmission line along with the vehicle antenna modulates (multiplies) the inductively coupled signals (data, voice, and identification) by a function which is related to the longitudinal position of each vehicle. The modulation is detected and processed on the wayside to simultaneously determine the position and velocity of each vehicle. The equations of the modulation and demodulation are discussed along with methods for processing the information. The development process of the guidway transmission line and electronics is presented. Typical performance parameters and characteristics are given.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121283129","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":"A multifunction integrated circuit for automotive sensors","authors":"E. Greenstein, P.R. Rabe","doi":"10.1109/VTC.1978.1622596","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622596","url":null,"abstract":"The implementation and use of a unique and very versatile CMOS integrated circuit which converts changes in physical parameters such as capacitance or resistance into a pulse width modulated digital signal is described. The circuit has an additional output which can be used to indicate when a predetermined set-point has been reached. The circuit, in combination with resistive or capacitive sensors, can be used to provide digital inputs to microprocessors and other digital control and diagnostic systems. Several applications are described and the integrated circuit is discussed. The multifunction analog/digital integrated circuit interface chip along with appropriate sensors offers unique sensor systems which could be reliable, accurate and inexpensive.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133609854","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":"Measuring characteristics of microwave mobile channels","authors":"R. Hubbard, R. Linfield, W. Hartman","doi":"10.1109/VTC.1978.1622594","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622594","url":null,"abstract":"This report describes the application of a high resolution (6 ns) pseudo-random noise (PN) channel probe for evaluating the transmission character of a land-mobile communication channel. Preliminary measurements were performed at a microwave frequency in a number of locations in Boulder, Colorado. Examples of data are presented which characterize the frequency correlation of the channel transfer function, and provide additional information on the spectral distortions caused by multipath.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115329166","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":"Possibilities for future personal radio services","authors":"R. Stone, C.V. Roberts","doi":"10.1109/VTC.1978.1622549","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622549","url":null,"abstract":"The Federal Communications Commission's Personal Radio Planning Group (PRPG) has completed a study of available future alternatives for personal radio services. A summary of the analyses conducted by the PRPG in ten areas of interest is presented, followed by a description of six possible future scenarios. The scenarios are then evaluated using the tools developed in the analytical tasks, and results are given. The advantages of the scenarios are then compared to illustrate the tradeoffs involved in the basic policy decisions that must be made.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123706708","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":"Analytical models in monitoring mobile packet radio devices","authors":"D. Minoli, I. Gitman","doi":"10.1109/VTC.1978.1622519","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622519","url":null,"abstract":"A store-and-forward broadcast radio network with mobile switching nodes is considered. The problems of monitoring connectivity changes in the network and updating information in switching nodes to enable routing of messages, are addressed. Analytical models are developed for determining the fraction of time that switching nodes have correct information as a function trajectory and speed of mobility, monitoring rate, traffic load, and network topology. The problems are experimentally investigated and results of monitoring rate to obtain performance requirements are obtained.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"312 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123634796","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":"On a distributed transportation control and safety system with a vehicle-born microcomputer","authors":"J. Glimm","doi":"10.1109/VTC.1978.1622558","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622558","url":null,"abstract":"After considering briefly the physical background of vehicle motion and control options, a distributed control and safety system is outlined. The safety system as the basic module only requires position information of both the real vehicle and the corresponding electronically simulated lead (phantom) vehicle. The latter are \"leading\" the controlled vehicles by a relative position (distance) control system. The phantom vehicles are also protecting their real vehicles by detecting any obstacles in the guideway in advance. Both linked to each other, may be maintained arbitrarily by the control center without increasing the likelihood of accidents. The outline of the required vehicle-born equipment using an 8080 microcomputer is given.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124007623","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":"Evolution of PATSAC technology","authors":"L. J. Lukowski, D. Yost","doi":"10.1109/VTC.1978.1622593","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622593","url":null,"abstract":"PATSAC Technology is one of the main techniques that is not applied today by radio engineers when planning new mobile and/or paging system coverage areas. PATSAC is the acronym for \"Predicted Actual Terrain Service Area Calculations\". Today most of the Mobile Telecommunications Industry Engineers use either Boise, Carey, or other equivalent methods to calculate contours to be in compliance with Part 21.504 of the FCC Rules and Regulations. They generally use average terrain from 2-10 miles for 45° radials to calculate a predicted service area. These calculating methods fail to consider the impact that specific terrain features will have on a coverage area. Further, the techniques used today must be redefined for calculating 900 MHz type cellular systems. In this session, we will introduce PATSAC Technology for the 150 MHz and 450 MHz bands and illustrate the potential application for the 900 MHz band. We will also show the defiencies that are inherent in today's calculating methodology if applied to 900 MHz band.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121296585","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":"On connectivity in mobile packet radio networks","authors":"I. Gitman, D. Minoli","doi":"10.1109/VTC.1978.1622518","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622518","url":null,"abstract":"A Packet Radio Network is a store-and-forward packet system employing radio links. A Mobile Packet Radio Network generalizes this system by allowing every radio unit to be independently in motion. In this paper a model for the analysis of connectivity as a function of time in such a network is presented and used to solve for parameters of interest. The model and the related analysis are guides for developing procedures for monitoring connectivity.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125259010","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 evolution of a linear induction motor people mover system","authors":"W. Watkins, M. Black","doi":"10.1109/VTC.1978.1622521","DOIUrl":"https://doi.org/10.1109/VTC.1978.1622521","url":null,"abstract":"In July 1975 the WEDway PeopleMover system was introduced in the Tomorrowland section of the Walt Disney World Theme Park culminating the development of a transportation concept which began with a system which was designed by Disney to transport guests thru the Ford pavilion at the 1964 New York World's Fair. A first generation WEDway PeopleMover system at Disneyland employed track mounted drive wheels acting on a traction surface on the bottom of each car. The second generation system at Walt Disney World, after extensive testing of linear synchronous motors, was ultimately fitted with linear induction motors.","PeriodicalId":264799,"journal":{"name":"28th IEEE Vehicular Technology Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1978-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116808599","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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