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[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology最新文献

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Network protocols for the cellular packet switch 蜂窝分组交换机的网络协议
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245476
K. Meier-Hellstern, G. Pollini, D. Goodman
{"title":"Network protocols for the cellular packet switch","authors":"K. Meier-Hellstern, G. Pollini, D. Goodman","doi":"10.1109/VETEC.1992.245476","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245476","url":null,"abstract":"An attempt is made to allocate control functions to elements of the cellular packet switch. Mobility management and radio resource management are performed by interface units of the metropolitan area network at the heart of the cellular packet switch. Specific control procedures are derived for call management, location updates, and handovers. To do so, a message syntax is derived, and a sequence of control messages is specified for each procedure. The result is the foundation of a network layer protocol for the cellular packet switch. The merit of the protocol can be evaluated in terms of robustness and in terms of efficiency.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124929402","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: 65
Spectrum allocation to accommodate two or more competitive systems 频谱分配，以适应两个或更多的竞争系统
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245253
D. Schilling, R. Pickholtz
{"title":"Spectrum allocation to accommodate two or more competitive systems","authors":"D. Schilling, R. Pickholtz","doi":"10.1109/VETEC.1992.245253","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245253","url":null,"abstract":"The 1850-1990-MHz band is being considered for shared use with the fixed service microwave users (point-to-point microwave). In order to use this band most effectively it should also be shared by several competitive broadband-CDMA PCN systems. How two or more competitive systems can share the spectrum without interfering with each other, without significantly decreasing the chip rate of each PCN system, and without increasing the level of interference seen by the fixed service microwave user is demonstrated.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124995344","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
The effect of constellation density on trellis coded modulation in fading channels 衰落信道中星座密度对栅格编码调制的影响
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245354
P. Ho, J. Cavers, J. Varaldi
{"title":"The effect of constellation density on trellis coded modulation in fading channels","authors":"P. Ho, J. Cavers, J. Varaldi","doi":"10.1109/VETEC.1992.245354","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245354","url":null,"abstract":"There has been some reluctance to use dense constellations such as 16 CAM for mobile communications because of their greater peak-to-average-power ratio and their seemingly greater sensitivity to noise and channel interference. It is demonstrated that dense constellations can actually improve performance. Using a completely analytical method, three constellations are compared with the same net throughput of 2 bits/symbol: uncoded QPSK, rate 2/3 TCM 8-PSK, and rate 1/2 TCM 16 QAM. Comparison on the basis of average power puts TCM 16-QAM 5-dB ahead of TCM 8-PSK. Even comparison on the basis of peak power gives TCM 16-QAM a 2.44-dB advantage over TCM 8-PSK. QPSK is much poorer than either.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123470695","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: 7
Data standards for cellular telecommunications-a service-based approach 蜂窝式电信的数据标准——基于服务的方法
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245426
A. Sacuta
{"title":"Data standards for cellular telecommunications-a service-based approach","authors":"A. Sacuta","doi":"10.1109/VETEC.1992.245426","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245426","url":null,"abstract":"The process being used by the TR45.3 data services task force to develop data standards for cellular telecommunications is described. The process has three salient features: (1) It is service driven; the task force describes specific services from a user's perspective and then uses these service descriptions to drive the rest of the process. (2) It is structured; a structured plan ensures that the task force and its member organizations remain focussed. (3) It is integrated; the task force takes an end-to-end view of the services for which it is responsible.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"423 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126713314","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: 9
Address design of FH-BFSK dedicated communication system useful for 4096 portable telephone subscribers 适用于4096移动电话用户的FH-BFSK专用通信系统地址设计
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245369
G.M. Rao, K. Reddy, B. Rao, R. Sridhar, K.H. Babu
{"title":"Address design of FH-BFSK dedicated communication system useful for 4096 portable telephone subscribers","authors":"G.M. Rao, K. Reddy, B. Rao, R. Sridhar, K.H. Babu","doi":"10.1109/VETEC.1992.245369","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245369","url":null,"abstract":"A dedicated frequency-hopping noncoherent binary frequency shift keying (BFSK) spread-spectrum multiple-access communication system is proposed for portable mobile communication application. Address design useful for 4096 subscribers with minimum cochannel interference has been carried out with an extended prime number algorithm. The frequency-hopped (FH) spread-spectrum signal with BFSK is generated with the help of a numerically controlled synthesizer in the transmitter. The receiver consists of another synthesizer with a preassigned FH code that can be acquired and tracked by serial search technique when the transmitted signal is receiver. The system occupies a conventional transponder bandwidth of 36 MHz. On computer simulation it is observed that performance of the system is better than P/sub e/=10/sup -3/ for 256 simultaneously active subscribers.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115541714","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
The performance of bandwidth-efficient RS-coded multilevel DPSK schemes on a mobile fading channel 带宽高效的rs编码多电平DPSK方案在移动衰落信道上的性能
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245357
S. H. Jamali, T. Le-Ngoc
{"title":"The performance of bandwidth-efficient RS-coded multilevel DPSK schemes on a mobile fading channel","authors":"S. H. Jamali, T. Le-Ngoc","doi":"10.1109/VETEC.1992.245357","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245357","url":null,"abstract":"The performance of bandwidth-efficient Reed-Solomon (RS)-coded multilevel differential phase shift keying (MDPSK) schemes is evaluated on a shadowed Rician fading channel. The error bounds are derived for RS-coded MDPSK schemes for the case of ideally interleaved slow-fading channels. The effects of fading bandwidth and imperfect interleaving on the performance of these coded-modulation schemes are studied by computer simulations.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116389326","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
Measured propagation characteristics of simulcast signals in an indoor microcellular environment 室内微蜂窝环境中同步广播信号的传播特性测量
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245323
S. Harbin, C. Palmer, B.K. Rainer
{"title":"Measured propagation characteristics of simulcast signals in an indoor microcellular environment","authors":"S. Harbin, C. Palmer, B.K. Rainer","doi":"10.1109/VETEC.1992.245323","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245323","url":null,"abstract":"The results of fine-resolution signal strength measurements characterizing an indoor microcellular environment are described. A comparison is made between the received signal strengths and the statistical distributions from a single transmitter and signals received from two different transmitters using the same frequency and modulating information (simulcast). Measurements were taken in locations, where the average signal strengths from the two simulcast transmitters were nearly equal, and no line-of-sight paths existed.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122339502","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: 4
Strategies on the immediate assignment procedure within the GSM call setup scenario GSM呼叫建立场景中即时分配程序的策略
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245307
J.N. Ku
{"title":"Strategies on the immediate assignment procedure within the GSM call setup scenario","authors":"J.N. Ku","doi":"10.1109/VETEC.1992.245307","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245307","url":null,"abstract":"In the call setup implementation of a cellular system, there are two design choices for the immediate assignment procedure: (1) assign a traffic channel and (2) assign a stand-alone dedicated control channel. A simulation was run to analyze which option would give a better system performance in terms of number of attempts blocked and channel utilization. The results of the simulation demonstrated that it is a tradeoff between the performance of the call setup time and the channel capacity in each cell.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"174 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114132350","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
Burst structure for unbalanced load in mobile radio system 移动无线电系统中不平衡负载的突发结构
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245284
P. Godlewski, Qing Guo
{"title":"Burst structure for unbalanced load in mobile radio system","authors":"P. Godlewski, Qing Guo","doi":"10.1109/VETEC.1992.245284","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245284","url":null,"abstract":"A traffic model for a packet transmission system is analyzed. The notion of an unbalanced bearer (u-bearer) is introduced to support a MAC connection. A burst structure for this u-bearer is proposed. Since link control is provided in both uplink and downlink channels, mixed voice/data services may be presented. Channel efficiency gain is analyzed in comparison with the duplex allocation scheme.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128346842","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
Digital generation of a reference signal for adaptive arrays applications (mobile radio) 自适应阵列应用参考信号的数字生成(移动无线电)
[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology Pub Date : 1992-05-10 DOI: 10.1109/VETEC.1992.245407
J. Diouris, M. Diop, J. Saillard
{"title":"Digital generation of a reference signal for adaptive arrays applications (mobile radio)","authors":"J. Diouris, M. Diop, J. Saillard","doi":"10.1109/VETEC.1992.245407","DOIUrl":"https://doi.org/10.1109/VETEC.1992.245407","url":null,"abstract":"Reference signal generation is a fundamental problem for the design of a least mean square adaptive array algorithm. A reference signal generated using a demodulator is discussed. A study of reference signal generation shows that the carrier frequency estimator and the bit error rate are very important. A reference signal generator model, gives good results with coherent jammers and multipath with some limits. Comprehensive simulation results are presented.<<ETX>>","PeriodicalId":114705,"journal":{"name":"[1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125125014","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
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