IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)最新文献_第6页

Performance of convolutional and RS codes in DS-CDMA systems using space-time MMSE multiuser detection 基于空时MMSE多用户检测的DS-CDMA系统中卷积码和RS码的性能

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956897

W. Hamouda, P. McLane

引用次数: 2

A 3D ray-tracing tool for broadband wireless systems 用于宽带无线系统的3D光线追踪工具

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.957103

Lionel Chaigneaud, V. Guillet, R. Vauzelle

引用次数: 9

Comparison of performance of location-aware and traditional handoff-decision algorithms in CDPD networks 位置感知与传统切换决策算法在CDPD网络中的性能比较

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956588

W. Teerapabkajorndet, P. Krishnamurthy

引用次数: 11

Simulated and measured WCDMA uplink performance 模拟并测量了WCDMA上行链路性能

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956955

H. Holma, D. Soldani, K. Sipilä

{"title":"Simulated and measured WCDMA uplink performance","authors":"H. Holma, D. Soldani, K. Sipilä","doi":"10.1109/VTC.2001.956955","DOIUrl":"https://doi.org/10.1109/VTC.2001.956955","url":null,"abstract":"This paper studies the WCDMA mobile transmission power and its variations due to fast power control with theoretical calculations, simulations, laboratory measurements and field measurements. The effect of mobile speed, multipath profile and base station reception antenna diversity is studied. The results show that a mobile speed of 120 km/h requires less transmission power than low mobile speeds because of the time diversity provided by interleaving. With little multipath diversity and without antenna diversity the difference in terms of transmitted power is up to 2 dB. The measurements and simulations show that the multipath diversity gain of the ITU Vehicular A channel compared to ITU Pedestrian A channel is 3 dB without antenna diversity and 1 dB with antenna diversity at 3 km/h. At higher mobile speeds the multipath diversity gains are smaller. The base station antenna diversity gain is shown to be 3-4 dB in ITU Vehicular A channel and 4-6 dB in ITU Pedestrian A channel. The results show good agreement between simulations and measurements. The results also showed inaccuracies in the implementation of the SIR estimation in the experimental WCDMA base station receiver.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128361430","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: 12

A comparison of the accuracy of propagation models using hit rate analysis 用命中率分析比较传播模型的准确性

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.957090

A. Owadally, E. Montiel, S. Saunders

引用次数: 20

A physical MIMO radio channel model for multi-element multi-polarized antenna systems 多单元多极化天线系统的MIMO信道物理模型

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956941

T. Svantesson

引用次数: 77

MAITE: a scheme for improving the performance of TCP over wireless channels MAITE:一种改进无线信道上TCP性能的方案

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956596

J. Aráuz, S. Banerjee, P. Krishnamurthy

引用次数: 11

Combining space-time block coding with diversity antenna selection for improved downlink performance 将空时分组编码与分集天线选择相结合，提高下行链路性能

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956581

M. Katz, E. Tiirola, J. Ylitalo

引用次数: 40

A spatio-temporal equalization method for indoor wireless LANs with beamforming criterion selection 基于波束形成准则选择的室内无线局域网时空均衡方法

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956652

K. Hayashi, S. Hara

{"title":"A spatio-temporal equalization method for indoor wireless LANs with beamforming criterion selection","authors":"K. Hayashi, S. Hara","doi":"10.1109/VTC.2001.956652","DOIUrl":"https://doi.org/10.1109/VTC.2001.956652","url":null,"abstract":"Spatio-temporal equalization is a technique which utilizes both spatial and temporal information of the received signal to compensate for intersymbol interference due to multipath fading. Considering the application of a spatio-temporal equalizer to high speed wireless communications systems, such as wireless LANs, this paper proposes a new spatio-temporal equalization method using a cascade configuration of an adaptive array and a DFE (decision feedback equalizer), which can be realized with small number of weights, and hence, low computational complexity. However, it has to pay a price for the simplicity, namely, the error performance surface becomes a fourth-order function of the weights, and possibly has two minima. In order to avoid a wrong trap by a local minimum during the adaptation of the MMSE (minimum mean-squared error) based adaptation algorithm with any initial values, the proposed equalizer calculates the weights of the adaptive array and the DFE separately in two steps, and the adaptive array selects a path or paths to capture depending on channel conditions. Computer simulation results show that the proposed method can achieve good performance in various channel models, which are based on measurement reports, in low computational complexity.","PeriodicalId":129008,"journal":{"name":"IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127548212","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

CDMA receiver performance for multiple-input multiple-output antenna systems 多输入多输出天线系统的CDMA接收机性能

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211) Pub Date : 2001-10-07 DOI: 10.1109/VTC.2001.956408

Mansoor Ahmed, J. Pautler, K. Rohani

引用次数: 10