1997 IEEE 47th Vehicular Technology Conference. Technology in Motion最新文献_第10页

Functional areas for advanced mobile satellite systems 先进移动卫星系统功能区

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.596352

F. D. Priscoli

{"title":"Functional areas for advanced mobile satellite systems","authors":"F. D. Priscoli","doi":"10.1109/VETEC.1997.596352","DOIUrl":"https://doi.org/10.1109/VETEC.1997.596352","url":null,"abstract":"In the third generation of mobile systems several satellite systems, each one tailored to specific user requirements, are expected to be integrated with the terrestrial cellular network. This paper deals with the extension to satellite systems of the advanced networking concepts which are emerging in the third generation framework. In particular, it focuses on the basic functional areas for mobile satellite systems, namely the cell and the location area. It is worth stressing that proper definitions of the satellite cell and satellite location area concepts, as well as an appropriate design of the satellite cell and satellite location area layouts, are essential, since the mobility procedures (cell reselection, paging, localization, handover) make systematic reference to these concepts. The topics exposed in this paper are applicable to any satellite system regardless of the orbit type (ranging from geostationary (GEO) to low Earth orbits (LEO)), the satellite spot-beam arrangement, the on-board switching capabilities (ranging from transparent payloads with reduced switching capabilities, to satellite systems provided with on-board processing capabilities (OBP) and inter-satellite link) and the access technique.","PeriodicalId":389634,"journal":{"name":"1997 IEEE 47th Vehicular Technology Conference. Technology in Motion","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133301891","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: 8

Combined decoding and channel estimation of OFDM systems in mobile radio networks 移动无线网络中OFDM系统的组合解码与信道估计

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605828

L. Jarbot

引用次数: 14

Multi-stage interference canceller using adaptive signal processing 采用自适应信号处理的多级干扰消除器

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.600499

S. Shimizu, E. Kawakami, K. Tokuda

引用次数: 2

A comparative study of several capacity enhancement techniques in GSM GSM中几种容量增强技术的比较研究

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605878

Y. Argyropoulos, T. Jeanes, W. Leung

引用次数: 1

Diversity technology based on multiple path and antenna selection for wideband communication systems 基于多路径和天线选择的宽带通信分集技术

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605953

E. Moriyama

引用次数: 0

Forward link capacity of spectrally overlaid narrowband and wideband CDMA systems 频谱覆盖的窄带和宽带CDMA系统的前向链路容量

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605517

I. Kim, Dongwoo Kim, D. Jeong

引用次数: 9

A comprehensive simulation approach to study FH in two GSM system regarding the physical layer level and the system level 从物理层和系统两个层面对两种GSM系统的跳频进行了综合仿真研究

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605879

M. Keller

引用次数: 8

Multi channel coupling, a new method to predict indoor propagation 多通道耦合，一种预测室内传播的新方法

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605450

M. Liebendorfer, U. Dersch

引用次数: 4

PCS ray characteristics between multiple floors of a concrete building 混凝土建筑多层间的PCS射线特性

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605441

G. Martin, M. Faulkner

引用次数: 1

On setting reverse link target SIR in a CDMA system CDMA系统中反向链路目标SIR的设置

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.600465

Ashwin Sampatht, P., Sarath Kumart, Jack M. Holtzmant

{"title":"On setting reverse link target SIR in a CDMA system","authors":"Ashwin Sampatht, P., Sarath Kumart, Jack M. Holtzmant","doi":"10.1109/VETEC.1997.600465","DOIUrl":"https://doi.org/10.1109/VETEC.1997.600465","url":null,"abstract":"DS/CDMA systems with conventional detectors require tight power control for satisfactory performance. In IS-95 systems, closed loop power control on the reverse link comprises two parts; an inner loop and outer loop. The inner loop aids the mobile in reaching its current signal to interference ratio (SIR) target through a sequence of power up/down commands. The outer loop dynamically adjusts the target SIR so that adequate performance in terms of frame error rate (FER), the true quality measure, is achieved. The propagation conditions for different users are different. Hence, the effectiveness of the inner loop is not the same for all users. In some cases, it always comes close to the target, while in others the variability could be quite significant. The outer loop compensates for such variability by adjusting the SIR targets so that all users obtain the same performance in terms of error rate. In this work, the algorithm used for the outer loop is described. A model for the outer loop is developed and analyzed. The analytical model enables sensitivity study of the algorithm to choice of parameters. Results indicate that the target values to be set are strongly dependent on the effectiveness of the inner loop. Thus, a fixed target strategy designed for the worst case, would be inefficient and would diminish system capacity.","PeriodicalId":389634,"journal":{"name":"1997 IEEE 47th Vehicular Technology Conference. Technology in Motion","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114743206","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: 132