Symposium, 2005 Wireless Telecommunications最新文献

UWB and RFID: a comparison and contrast 超宽带与射频识别:比较与对比

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-30 DOI: 10.1109/WTS.2005.1524799

Bhagyavati

引用次数: 1

The barriers of GSM-WLAN Integration Program in Taiwan from a regulatory perspective 从监管角度看台湾GSM-WLAN整合计划的障碍

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-30 DOI: 10.1109/WTS.2005.4660140

Lin Wu-Jian

{"title":"The barriers of GSM-WLAN Integration Program in Taiwan from a regulatory perspective","authors":"Lin Wu-Jian","doi":"10.1109/WTS.2005.4660140","DOIUrl":"https://doi.org/10.1109/WTS.2005.4660140","url":null,"abstract":"Summary form only given. Along with the aggressive development of the wireless local area network (WLAN) and cellular network, the integrated advantage of these two networks has become an inevitable development in the future. This research is based on the official reports of the GSM-WLAN project hold by NICI (National Information and Communications Initiative Committee) and attempts to observe the development of GSM-WLAN integration in Taiwan. Furthermore, we find out the current difficulties and problems including the interference of WLAN and, the access charge and certification mechanism between the wireless Internet service providers and cell phone operators. By reviewing the Jumpstart Broadband Act of the U.S on WLAN spectrum and the modus of iPass and Gric Communications, so called Internet roaming organization, on authentication, authorization, accounting and the access problems, this research would put forward some approaches. This research considers that the problem of WLAN interference could be solved multiply by technique of technology renewing, the negotiation within operators and the law modification. On the other hand, an intermedium like Internet roaming organization could be an appropriate approach to solve the authentication, authorization, accounting problems between systems. This research would finally make suggestions for the further research and formulation of government policy","PeriodicalId":335683,"journal":{"name":"Symposium, 2005 Wireless Telecommunications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124469688","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

High performance transmission using differential multi-pulse modulation in transmit-reference ultra-wideband (TR-UWB) communications 在传输参考超宽带(TR-UWB)通信中使用差分多脉冲调制的高性能传输

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-30 DOI: 10.1109/WTS.2005.1524782

J. Sumethnapis, K. Araki

{"title":"High performance transmission using differential multi-pulse modulation in transmit-reference ultra-wideband (TR-UWB) communications","authors":"J. Sumethnapis, K. Araki","doi":"10.1109/WTS.2005.1524782","DOIUrl":"https://doi.org/10.1109/WTS.2005.1524782","url":null,"abstract":"Transmit reference ultra wideband (TR-UWB) communication system is gaining increased popularity as a prospective transmission scheme for short-range high data rate indoor wireless communication because of its simplification of synchronization and channel estimation that are known to be difficult problems in UWB communication systems. However, TR-UWB has problem that the data rate will be degraded when using the pulse-pair for transmitted one data bit. In this paper, a combined Pulse Position modulation (PPM), Differential BPSK and Multi-Pulse Modulation (MPM) have been proposed in order to increase the total data rate using the same number of pulses. By the these schemes, the modulated pulse that has ever been used for transmitted only one data bit in each pulse-pair in conventional TR-UWB system, can be used for transmitted more than one bit data depending on the level of MPM and PPM modulation. Moreover, the error performance has been upgraded by these modulation schemes as shown in the later section. In addition, the simulation results show that the total throughput performance of the proposed system has been improved, nearly 4-5 times when comparing with the conventional TR-UWB communication system","PeriodicalId":335683,"journal":{"name":"Symposium, 2005 Wireless Telecommunications","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125010361","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

Energy-delay analysis of wireless networks over Rayleigh fading channel 瑞利衰落信道无线网络的能量延迟分析

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524787

Sunny Chang

引用次数: 2

A novel telemammography scheme across ad hoc networks 一种跨自组织网络的新型远程成像方案

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524789

E. Sheybani, G. Javidi

{"title":"A novel telemammography scheme across ad hoc networks","authors":"E. Sheybani, G. Javidi","doi":"10.1109/WTS.2005.1524789","DOIUrl":"https://doi.org/10.1109/WTS.2005.1524789","url":null,"abstract":"One of the goals of the National Cancer Institute (NCI) cancer control program to reach more than 80% of the eligible women in mammography screening by the year 2000 yet remains as a challenge. That is primarily due to 1) the fact that examination process is a complex and lengthy one and 2) it is not available to the majority of women who live in remote and urban sites. This problem can be solved using ad hoc-networking technologies and signal processing algorithms. Software modules can help detect true negatives (TN), while marking true positives (TP) for further investigation. This reduces the load on network and radiologists by a tremendous amount. Ad hoc networking equipment make clinic-lab connection more accessible and image enhancement algorithms readily available to the radiologists. In this research automatic robust computer assisted diagnostic (CAD) methods for mass detection in breast cancer have been associated with region of interest (ROI) compression for efficient transmission over ad hoc networks. This telemammography system for remote computer-aided breast cancer detection and diagnosis has the advantage of better reach of women for cancer screening and at the same time provides the diagnosis with higher efficiency, better accuracy, and lower cost.","PeriodicalId":335683,"journal":{"name":"Symposium, 2005 Wireless Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129676819","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

Robust frequency offset estimation with a single symbol for FH-OFDMA FH-OFDMA的单符号鲁棒频偏估计

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524780

Daejung Yoon, D. Han

引用次数: 1

A study of frequency interference and indoor location sensing with 802.11b and Bluetooth technologies 基于802.11b和蓝牙技术的频率干扰和室内定位传感研究

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1504/IJMC.2006.010359

Abhishek P. Patil, D. Kim, L. Ni

引用次数: 19

Simulations of site diversity based outage improvements for point-to-multipoint systems in millimeter-wave band 基于站点分集的毫米波点对多点系统中断改进模拟

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524770

S. Zvánovec, P. Pechac

{"title":"Simulations of site diversity based outage improvements for point-to-multipoint systems in millimeter-wave band","authors":"S. Zvánovec, P. Pechac","doi":"10.1109/WTS.2005.1524770","DOIUrl":"https://doi.org/10.1109/WTS.2005.1524770","url":null,"abstract":"Rain attenuation is one of the main factors limiting performance of point-to-multipoint systems operating in millimeter-wave bands. Site diversity can be used as one of the propagation impairment mitigation techniques thanks to the non-uniform spatial distribution of the rain rate. A diversity gain concept is usually used for diversity evaluations. The motivation to this work is to offer to service providers a simpler way to evaluate possibilities of the site diversity employment for specific scenarios instead of power balance calculations of every potential diversity connection. Outage improvement was studied using space-time simulations of a point-to-multipoint system in a specific area under a specific rain conditions. Large rain event database for Czech Republic was build for the simulations utilizing time sequences of rainfall radar images for 50/spl times/50 km area. System outage improvement probability was derived as a straightforward function of the rain fade margin, angle separation and distances of main and diversity hubs. Some of the simulation results at 42 GHz and corresponding outage improvement probability using the site diversity are presented as well.","PeriodicalId":335683,"journal":{"name":"Symposium, 2005 Wireless Telecommunications","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114800563","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: 6

Lightweight packet authentication in IEEE 802.11 IEEE 802.11中的轻量级报文认证

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524797

KeunSoon Lee, Hyojin Kim, Joo-Seok Song

引用次数: 1

Improving the radio link layer QoS performance for Bluetooth real-time video communications 提高蓝牙实时视频通信的无线链路层QoS性能

Symposium, 2005 Wireless Telecommunications Pub Date : 2005-04-28 DOI: 10.1109/WTS.2005.1524773

Z. Chen, P. Christ

引用次数: 3