Pub Date : 1982-05-23DOI: 10.1109/VTC.1982.1623036
S. Urabe, S. Yuki, T. Matsuura, K. Iwahashi
This paper introduces an advanced 800 MHz direct-oscillation frequency, synthesizer and 145 MHz SAW FM modulator that do not use multipliers or mixers but instead uses four newly developed devices: An 800 MHz VCO, a 145 MHz SAW VCO, a two-modulus prescaler IC which is operational up to 1 GHz, and a C-MOS PLL LSL.
{"title":"800 MHz frequency synthesizer and 145 MHz SAW FM modulator for 800 MHz cellular land mobile radio unit","authors":"S. Urabe, S. Yuki, T. Matsuura, K. Iwahashi","doi":"10.1109/VTC.1982.1623036","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623036","url":null,"abstract":"This paper introduces an advanced 800 MHz direct-oscillation frequency, synthesizer and 145 MHz SAW FM modulator that do not use multipliers or mixers but instead uses four newly developed devices: An 800 MHz VCO, a 145 MHz SAW VCO, a two-modulus prescaler IC which is operational up to 1 GHz, and a C-MOS PLL LSL.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117085364","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623013
L. Petak
In this paper, spectrum planning is discussed in terms of the impact which it could have on the spectrum management process. Rather than merely attempting to accommodate specific radio service needs within spectrum allocation efforts, planning is seen as a means to improving the spectrum management process itself. Goals which such a planning program should strive to achieve, and the efforts required to do so, are described.
{"title":"Planning in support of spectrum management","authors":"L. Petak","doi":"10.1109/VTC.1982.1623013","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623013","url":null,"abstract":"In this paper, spectrum planning is discussed in terms of the impact which it could have on the spectrum management process. Rather than merely attempting to accommodate specific radio service needs within spectrum allocation efforts, planning is seen as a means to improving the spectrum management process itself. Goals which such a planning program should strive to achieve, and the efforts required to do so, are described.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"366 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115901960","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623037
J. Nakagawa, K. Yamashita, Y. Fujiwara, M. Toya
This paper presents a Compact direct frequency synthesizer with the channel capacity of 666 channels. Direct frequency synthesis technology in a 900MHz band has been achieved by development of three devices; a pair of pulse swallowing divider LSI's operating at the frequency of above 1GHz and a VCO (Voltage Controlled Oscillator) with a microstrip resonator. A channel switching time peculiar to cellular mobile telephone systems is faster than 30ms. The size of the developed synthesizer is 130 × 47 × 25mm, and the drain current is 165mA.
{"title":"Direct frequency synthesizer using a high speed prescaler for 800MHz mobile telephone transceivers","authors":"J. Nakagawa, K. Yamashita, Y. Fujiwara, M. Toya","doi":"10.1109/VTC.1982.1623037","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623037","url":null,"abstract":"This paper presents a Compact direct frequency synthesizer with the channel capacity of 666 channels. Direct frequency synthesis technology in a 900MHz band has been achieved by development of three devices; a pair of pulse swallowing divider LSI's operating at the frequency of above 1GHz and a VCO (Voltage Controlled Oscillator) with a microstrip resonator. A channel switching time peculiar to cellular mobile telephone systems is faster than 30ms. The size of the developed synthesizer is 130 × 47 × 25mm, and the drain current is 165mA.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126489139","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623048
R.C. Lodde
The direct dialogue with the computer from a moving vehicle or small hand-held unit has been day-to-day routine for many security officers in the Federal Republic of Germany for quite a while. The development effort made over the past few years has led to matured systems. Based upon commercially available technology, it comprised, for the most commonly used digital communications system, the following areas of study: - simplifying data terminal operation, - ergonomics and secure mounting in vehicles, - data display on the screen of the mobile terminal in a form compatible with user needs and system requirements, - implementing an operating system for wireless digital communications systems covering large areas and - concomitant field, and laboratory, testing to evaluate the performance characteristics of digital communications systems made by different manufacturers. The experience gathered during this work and the technological state of the art are described in the present paper.
{"title":"Experience gathered during the development, and operation, of a nationwide mobile digital communications system","authors":"R.C. Lodde","doi":"10.1109/VTC.1982.1623048","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623048","url":null,"abstract":"The direct dialogue with the computer from a moving vehicle or small hand-held unit has been day-to-day routine for many security officers in the Federal Republic of Germany for quite a while. The development effort made over the past few years has led to matured systems. Based upon commercially available technology, it comprised, for the most commonly used digital communications system, the following areas of study: - simplifying data terminal operation, - ergonomics and secure mounting in vehicles, - data display on the screen of the mobile terminal in a form compatible with user needs and system requirements, - implementing an operating system for wireless digital communications systems covering large areas and - concomitant field, and laboratory, testing to evaluate the performance characteristics of digital communications systems made by different manufacturers. The experience gathered during this work and the technological state of the art are described in the present paper.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121449003","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623039
M. Toya, Y. Kuwamoto, A. Ashida, Y. Fujiwara, S. Fukuchi, J. Nakagawa, Y. Kinoshita
Prototype mobile telephones have been developed for an 800 MHz cellular system. A description is given of its development objectives, newly adopted technologies, and results.
已经为800兆赫的蜂窝系统开发了原型移动电话。介绍了它的发展目标、新采用的技术和成果。
{"title":"800 MHz mobile telephones for cellular system","authors":"M. Toya, Y. Kuwamoto, A. Ashida, Y. Fujiwara, S. Fukuchi, J. Nakagawa, Y. Kinoshita","doi":"10.1109/VTC.1982.1623039","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623039","url":null,"abstract":"Prototype mobile telephones have been developed for an 800 MHz cellular system. A description is given of its development objectives, newly adopted technologies, and results.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121020412","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623017
K.R. Hoppenrath
When a quasi-synchronous transmission scheme, employing the use of aged, temperature controlled high stability crystal oscillators for RF carrier control, is used to provide large area radio coverage, one of the more demanding maintenance items is the periodic netting of the RF carriers; the period of such maintenance decreasing with increasing channel operating frequency. A technique is discussed which substantially reduces periodic netting of the RF carriers of a quasi-synchronous transmission system by the use of site located atomic references. The effect on voice communications integrity as a result of this technique is discussed, along with recommendations based on system performance during the initial 6 months of operation.
{"title":"UHF FM quasi-synchronous transmission system using site located atomic references","authors":"K.R. Hoppenrath","doi":"10.1109/VTC.1982.1623017","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623017","url":null,"abstract":"When a quasi-synchronous transmission scheme, employing the use of aged, temperature controlled high stability crystal oscillators for RF carrier control, is used to provide large area radio coverage, one of the more demanding maintenance items is the periodic netting of the RF carriers; the period of such maintenance decreasing with increasing channel operating frequency. A technique is discussed which substantially reduces periodic netting of the RF carriers of a quasi-synchronous transmission system by the use of site located atomic references. The effect on voice communications integrity as a result of this technique is discussed, along with recommendations based on system performance during the initial 6 months of operation.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124084216","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623063
H. Hecht
The requirements for computer resources are analyzed under conditions where (a) each center is responsible for providing its own backup equipment, (b) backup is provided by a central pool, and (c) backup is furnished by means of distributed computing. Economic and management implications of each approach are Investigated. Distributed computing is seen to have considerable merit, and further investigations of its application are recommended.
{"title":"Distributed computing for traffic control","authors":"H. Hecht","doi":"10.1109/VTC.1982.1623063","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623063","url":null,"abstract":"The requirements for computer resources are analyzed under conditions where (a) each center is responsible for providing its own backup equipment, (b) backup is provided by a central pool, and (c) backup is furnished by means of distributed computing. Economic and management implications of each approach are Investigated. Distributed computing is seen to have considerable merit, and further investigations of its application are recommended.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129300319","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623060
R. Mayhan
{"title":"Improving the performance of a two-frequency radar for vehicle automatic lateral control","authors":"R. Mayhan","doi":"10.1109/VTC.1982.1623060","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623060","url":null,"abstract":"","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127380340","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623018
M. Sasuta
Businesses and governmental organizations are researching for means to better manage their resources (energy, labor, equipment, etc.) and thus contribute to operational productivity improvements. Many such organizations are becoming aware of the potentials a radio communication system can afford in the area of assisting resource management. To satisfy the communication needs of major private radio users, an 800 MHz trunked dispatch system offers many system benefits, such as apparent user privacy, simplified radio operation, faster channel access and flexible fleet partitioning. The basic structure of a trunked dispatch system is a co-located configuration; with all the base transmitters, receivers and control equipment resident at a single site. This co-located configuration limits the applications for the user with large radio communication system requirements. The user with communications needs extending beyond the coverage contour of a single base repeater site finds the co-located configuration awkward to implement efficiently to satisfy all the communications needs. Examples of users having large communication needs would include petroleum companies, public utilities, and large municipalities. To address the needs of many such users, a wide area coverage system is developed by merging the concepts of a trunked dispatch system with simulcast transmit techniques. This communication system offers all the features of a co-located trunked dispatch system, but allows the coverage area to greatly extend beyond the single base repeater site to encompass many remote repeater sites. To effectively merge these communication systems, a myriad of technologies is employed. Wide area coverage simulcast communication systems have been previously developed for special applications, thus producing a guide to general areas of concern of a simulcast communication approach. The development of areas of the 800MHz. trunked dispatch simulcast system introduces many areas new to simulcast system development. Previous simulcast systems have dealt predominently with voice communication solely. A trunked system utilizes digital signalling techniques which are affected by the simulcast operation and must be addressed in addition to the expected effects upon the audio voice signalling. The very 800MHz, environment as a host to a simulcast system is an unexplored area. The system concepts and technical issues unique to an 800MHz. simulcast trunked system applications are to be discussed in this paper.
{"title":"System design aspects of a simulcast trunked system","authors":"M. Sasuta","doi":"10.1109/VTC.1982.1623018","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623018","url":null,"abstract":"Businesses and governmental organizations are researching for means to better manage their resources (energy, labor, equipment, etc.) and thus contribute to operational productivity improvements. Many such organizations are becoming aware of the potentials a radio communication system can afford in the area of assisting resource management. To satisfy the communication needs of major private radio users, an 800 MHz trunked dispatch system offers many system benefits, such as apparent user privacy, simplified radio operation, faster channel access and flexible fleet partitioning. The basic structure of a trunked dispatch system is a co-located configuration; with all the base transmitters, receivers and control equipment resident at a single site. This co-located configuration limits the applications for the user with large radio communication system requirements. The user with communications needs extending beyond the coverage contour of a single base repeater site finds the co-located configuration awkward to implement efficiently to satisfy all the communications needs. Examples of users having large communication needs would include petroleum companies, public utilities, and large municipalities. To address the needs of many such users, a wide area coverage system is developed by merging the concepts of a trunked dispatch system with simulcast transmit techniques. This communication system offers all the features of a co-located trunked dispatch system, but allows the coverage area to greatly extend beyond the single base repeater site to encompass many remote repeater sites. To effectively merge these communication systems, a myriad of technologies is employed. Wide area coverage simulcast communication systems have been previously developed for special applications, thus producing a guide to general areas of concern of a simulcast communication approach. The development of areas of the 800MHz. trunked dispatch simulcast system introduces many areas new to simulcast system development. Previous simulcast systems have dealt predominently with voice communication solely. A trunked system utilizes digital signalling techniques which are affected by the simulcast operation and must be addressed in addition to the expected effects upon the audio voice signalling. The very 800MHz, environment as a host to a simulcast system is an unexplored area. The system concepts and technical issues unique to an 800MHz. simulcast trunked system applications are to be discussed in this paper.","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127118182","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 : 1982-05-23DOI: 10.1109/VTC.1982.1623050
R. H. Tridgell
{"title":"The CCIR radio-paging code no. 1: A new world standard","authors":"R. H. Tridgell","doi":"10.1109/VTC.1982.1623050","DOIUrl":"https://doi.org/10.1109/VTC.1982.1623050","url":null,"abstract":"","PeriodicalId":230854,"journal":{"name":"32nd IEEE Vehicular Technology Conference","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124249673","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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