1997 IEEE 47th Vehicular Technology Conference. Technology in Motion最新文献_第2页

Effective radio resource assignment in microcellular systems with cell overlapping: the reserve channels scheme 具有小区重叠的微蜂窝系统中有效的无线电资源分配:预留信道方案

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.600472

A. Iera, S. Marano, A. Molinaro, G. Serra

引用次数: 1

Multi-channel MLSE equalizer with parametric FIR channel identification 多通道MLSE均衡器与参数FIR通道识别

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.600421

Jiunn-Tsair Chen, A. Paulraj

引用次数: 14

Pilot assisted channel estimation for OFDM in mobile cellular systems 移动蜂窝系统中OFDM导频辅助信道估计

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605836

Fredrik Tufvesson, T. Maseng

引用次数: 185

High frequency propagation models for building blockage at L and Ka band L和Ka波段建筑阻塞的高频传播模型

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.596317

C. M. Wangsvick, P. A. Tirkas, C. Balanis

引用次数: 0

Frequency acquisition and tracking for mobile LEO satellite communications 移动低轨道卫星通信的频率采集与跟踪

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605856

Y. Su, Ru-Chwen Wu

引用次数: 1

Predictive switched diversity for slow speed mobile terminals 用于低速移动终端的预测切换分集

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605956

M. Tarkiainen, T. Westman

{"title":"Predictive switched diversity for slow speed mobile terminals","authors":"M. Tarkiainen, T. Westman","doi":"10.1109/VETEC.1997.605956","DOIUrl":"https://doi.org/10.1109/VETEC.1997.605956","url":null,"abstract":"Multipath fading is a difficult problem in many mobile communication applications. Especially, in the applications characterized by low terminal speeds like wireless local loop (WLL) and pedestrian communications the terminal can be in a deep fade for long periods of time. Consequently, the performance of the radio link is seriously degraded. Many techniques having their inherent advantages and disadvantages are available for combatting the multipath fading. One of the most straight-forward methods is antenna diversity. However, in addition to requiring more than one antenna a switching or combination circuitry is needed. The switched antenna diversity is simpler and cheaper solution compared to selecting or combining antenna diversity constructions since only one receiver circuitry is required. Consequently, it is an attractive choice for realizing mobile terminal antenna diversity. Unfortunately, the performance of the switched antenna diversity is worse than selecting and combining methods. A predictive switch-and-examine switching algorithm is presented. In addition, the performance of the developed method is compared to selection and maximal-ratio combining diversity methods by simulations in WLL and GSM/DCS typical urban (TU) channel. According to the results, the developed switching algorithm performed almost as well as selection diversity. Consequently, the predictive switched diversity is an attractive choice for mobile and fixed terminals.","PeriodicalId":389634,"journal":{"name":"1997 IEEE 47th Vehicular Technology Conference. Technology in Motion","volume":"25 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":"122304206","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: 11

Data detection algorithms specially designed for the downlink of CDMA mobile radio systems 专为CDMA移动无线电系统下行链路设计的数据检测算法

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.596348

Anja Klein

{"title":"Data detection algorithms specially designed for the downlink of CDMA mobile radio systems","authors":"Anja Klein","doi":"10.1109/VETEC.1997.596348","DOIUrl":"https://doi.org/10.1109/VETEC.1997.596348","url":null,"abstract":"In this paper, suboptimum data detection algorithms specially designed for the downlink of CDMA systems are presented which take into account the downlink-specific system characteristics. These algorithms are based on the zero forcing (ZF) criterion and the minimum mean square error (MMSE) criterion, respectively. Basically, they consist of a channel equalizer followed by a code-matched filter. They allow to exploit the multipath diversity of the mobile radio channel. Only the CDMA code used for transmission to the mobile station of interest is needed at the receiver and only the data symbols addressed to that individual mobile station are detected. The computational complexity is independent of the number of active users, which allows to provide mobile terminals of small size and weight with low power consumption. The algorithms are applied to the downlink of a TDMA/CDMA system concept. The algorithms specially designed for the downlink situation lead to a significant system performance enhancement as compared with the conventional matched filter or Rake receiver and to a slightly worse system performance than ZF- and MMSE-based joint detection algorithms which are applicable also in the uplink and which require that all CDMA codes presently used for transmission to the active mobile stations are known at each of these mobile stations.","PeriodicalId":389634,"journal":{"name":"1997 IEEE 47th Vehicular Technology Conference. Technology in Motion","volume":"24 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":"122652536","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: 216

Application of channel sounding to CDMA PCS design at 1900 MHz 1900mhz信道测深在CDMA PCS设计中的应用

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605896

J. Jorgensen, I. Kostanic, W. Foose

引用次数: 5

A mobile propagation channel model with frequency hopping based on a digital signal processing and statistical analysis of wideband measurements applied in micro and small cells at 2.2 GHz 基于数字信号处理和统计分析的移动跳频传播信道模型，应用于2.2 GHz的微型和小型小区的宽带测量

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.600497

I. Siaud

引用次数: 5

Uplink performance of a multicarrier-CDMA mobile radio system concept 多载波cdma移动无线电系统概念的上行链路性能

1997 IEEE 47th Vehicular Technology Conference. Technology in Motion Pub Date : 1997-05-04 DOI: 10.1109/VETEC.1997.605889

B. Steiner

引用次数: 22