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26th IEEE Vehicular Technology Conference最新文献

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Electronically-steered antennas with 360°coverage for mobile use 具有360度覆盖范围的电子操纵天线，可用于移动设备
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622328
D. Atchley, M. Hines, H. Howe, H. Stinehelfer, J. White
{"title":"Electronically-steered antennas with 360°coverage for mobile use","authors":"D. Atchley, M. Hines, H. Howe, H. Stinehelfer, J. White","doi":"10.1109/VTC.1976.1622328","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622328","url":null,"abstract":"This paper describes several electronically-steered phased-array antennas for use in the HF, VHF and UHF bands. An approach is described which uses 4 vertical elements above the ground plane in a square pattern. With proper phasing, a directive beam of 97° width may be electronically switched in quadrants to provide full 360° azimuth coverage. This antenna provides significant forward gain and a high front-to-back ratio to provide suppression of interference not in the path of communication. An alternate approach uses three elements in a triangular configuration, each beam covering 120° of azimuth. Methods will be described for mode selection of omni and the four quadrantal directions using semiconductor switching.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122195036","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
Improving spectrum utilization in mobile radio communication 提高移动无线电通信频谱利用率
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622331
H. Magnuski
{"title":"Improving spectrum utilization in mobile radio communication","authors":"H. Magnuski","doi":"10.1109/VTC.1976.1622331","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622331","url":null,"abstract":"Spectrum is a multidimensional quantity. Considering this, AM, SSB, FM and digital modulation are compared for best spectrum utilization. The evils of high transmitter power are enumerated and some system configurations using low power are discussed. In particular, Prearranged Communication Path (PCP) systems using chains of low power repeaters are described. Looking into the future, it is predicted that PCP Systems using Delta Modulation will be widely used, providing improved service with privacy and much better spectrum utilization.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123586539","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
Multipath and ducting tolerant location techniques for automatic vehicle location systems 车辆自动定位系统的多径和导管容差定位技术
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622340
D. Nicholson
{"title":"Multipath and ducting tolerant location techniques for automatic vehicle location systems","authors":"D. Nicholson","doi":"10.1109/VTC.1976.1622340","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622340","url":null,"abstract":"This paper discusses various methods of improving the accuracy of a linear least squares solution algorithm which is commonly used in Time Difference of Arrival (TDOA), hyperbolic location systems. Topics considered include methods of generating a useful weighting matrix and a residue examination scheme as the basis for rejecting data contaminated by large propagation delay errors. The performance of two linear schemes is compared to that of the nonlinear least squares solution using some 2000 sets of actual TDOA measurements.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"23 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120858896","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
Radio communications in the Colton yard 科尔顿船厂的无线电通讯
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622334
R. L. Robinson
{"title":"Radio communications in the Colton yard","authors":"R. L. Robinson","doi":"10.1109/VTC.1976.1622334","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622334","url":null,"abstract":"This paper describes five different radio systems which are used in the Southern Pacific's large railroad freight classification yard located in Colton, California. Each of these systems is discussed in turn, with emphasis on how that system is tailored to satisfy a specific communications requirement in the operation of the Colton Yard. It is intended that a discussion of the various radio applications in this yard will illustrate the types of communications which are necessary for operation of any large classification yard.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131692751","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 approach to digital signal processing for a high capacity mobile telephone system 一种大容量移动电话系统的数字信号处理方法
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622320
E. Addeo
{"title":"An approach to digital signal processing for a high capacity mobile telephone system","authors":"E. Addeo","doi":"10.1109/VTC.1976.1622320","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622320","url":null,"abstract":"The High Capacity Mobile Telephone Communications System (HCMTS) employs a 20K baud digital signaling system to provide information needed in the various stages of call setup and control. This paper describes the signal processing required for transmission and recovery of this digital information over the Rayleigh fading channel environment. An overview of the mobile data recovery system along with a discussion of spectrum considerations is given. Also, laboratory data taken with a Rayleigh fading simulator and results from field testing are given.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124345643","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
Mini computer support for mobile services frequency coordination 小型计算机支持移动业务频率协调
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622333
E. Schimmel, C. Snell
{"title":"Mini computer support for mobile services frequency coordination","authors":"E. Schimmel, C. Snell","doi":"10.1109/VTC.1976.1622333","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622333","url":null,"abstract":"An examination of land mobile frequency coordination practices points up the fact that the FCC has been far more aggressive and innovative than the private sector. In addition to discussing some cause and effect implications of these respective actions and inactions, this paper describes a practical mini-computer system which one user organization has attempted to develop as a means of demonstrating the viability of self-regulation, by the private land mobile community, of the frequency management function.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131919007","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
Design of a comprehensive state police radio system 综合州警无线电系统的设计
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622343
L. L. Taylor
{"title":"Design of a comprehensive state police radio system","authors":"L. L. Taylor","doi":"10.1109/VTC.1976.1622343","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622343","url":null,"abstract":"","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"648 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132961491","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
Equipment for an automatic transmitter identification system (ATIS) 自动发射机识别系统(ATIS)用设备
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622332
C. A. Rypinski
{"title":"Equipment for an automatic transmitter identification system (ATIS)","authors":"C. A. Rypinski","doi":"10.1109/VTC.1976.1622332","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622332","url":null,"abstract":"Increased use of radio channels is possible if fraction-of-a-second data messages are used to replace voice identification now used operationally and to satisfy FCC procedural rules. Recently developed equipment for the ATIS function is simple, reliable and low cost, so that it can be considered for universal use. The modulation, coding and circuit design technique used will be described as well as some applications and experimental results. This work is related to universal ATIS as explored in FCC Docket No. 20351, and comments will be offered on maximization of user benefits which might result from adoption of appropriate ATIS technical standards.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"37 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133839052","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
Public mobile telephone—A comparative analysis of systems worldwide 公共移动电话—全球系统的比较分析
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622314
R. L. Lagace, H. Pastan
{"title":"Public mobile telephone—A comparative analysis of systems worldwide","authors":"R. L. Lagace, H. Pastan","doi":"10.1109/VTC.1976.1622314","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622314","url":null,"abstract":"This paper compares public mobile telephone systems world-wide, encompassing key radio and operational characteristics on both the overall system and mobile unit levels. The comparisons also include the status of evolutionary development regarding degree of automation, number of subscribers, geographic availability of service, mobile unit costs, and major developments anticipated in the technological upgrading and physical expansion of services.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122515097","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
A new simple switching-diversity technique for digital land mobile radio 一种新的简单的陆地移动数字对讲机切换分集技术
26th IEEE Vehicular Technology Conference Pub Date : 1976-03-24 DOI: 10.1109/VTC.1976.1622324
F. Adachi, T. Hattori, K. Hirade, T. Kamata
{"title":"A new simple switching-diversity technique for digital land mobile radio","authors":"F. Adachi, T. Hattori, K. Hirade, T. Kamata","doi":"10.1109/VTC.1976.1622324","DOIUrl":"https://doi.org/10.1109/VTC.1976.1622324","url":null,"abstract":"This paper describes a new simple switching-diversity technique without level detection. It adopts such method as to receive alternatively two RF signals received from different antenna branches at an adequate frequency. A few experimental tests have proved that this technique gives a significant improvement in signal transmission performance under the simulated Rayleigh fading channel at 900 MHz band.","PeriodicalId":342659,"journal":{"name":"26th IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1976-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126343199","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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