发布求助
文献互助 智能选刊 最新文献

1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)最新文献

筛选
英文 中文
Directional frequency reuse for cellular communications 蜂窝通信的定向频率复用
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655509
S. Faruque
{"title":"Directional frequency reuse for cellular communications","authors":"S. Faruque","doi":"10.1109/ICPWC.1997.655509","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655509","url":null,"abstract":"This paper presents a method of directional frequency reuse for high density, high capacity cellular networks. Unlike the classical method of cluster reuse, the proposed directional frequency reuse is based on group reuse, having multiple reuse distances. Consequently, the carrier to interference ratio (C/I) appears as a function of multiple reuse distances with fewer cochannel interferers. Moreover, antenna downtilt and beamwidth becomes more effective thus enhancing C/I and capacity. These novel features are presented in this paper.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"17 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120925630","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
Analysis of wireless data networks with retransmission diversity combining in a cluttered environment 杂波环境下重传分集组合无线数据网络分析
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655560
A. Annmalai, V. Bhargava
{"title":"Analysis of wireless data networks with retransmission diversity combining in a cluttered environment","authors":"A. Annmalai, V. Bhargava","doi":"10.1109/ICPWC.1997.655560","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655560","url":null,"abstract":"An adaptive retransmission diversity combining scheme is investigated for both the slotted and unslotted random access packet-switched code division multiple access networks over a frequency-selective Rayleigh fading channel. Multiple received noisy packets are combined on a bit by bit basis to form a single, more reliable packet. A novel mechanism to ensure a reliable packet combining operation is outlined. It is shown that packet combining is an effective mechanism for enhancing the network throughput and delay performance of the conventional DS/CDMA ALOHA, while sustaining a reasonable receiver complexity. This scheme is highly advantageous for systems which can tolerate a certain delay and operate over highly time-varying channels. We also examine the sensitivity of the system performance to the packet header failure rate and in the presence of feedback channel errors.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"15 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120892040","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
Networking aspects of 3rd generation mobile communications 第三代移动通信的网络方面
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655553
K. Sabatakakis, E. Berruto, G. Colombo
{"title":"Networking aspects of 3rd generation mobile communications","authors":"K. Sabatakakis, E. Berruto, G. Colombo","doi":"10.1109/ICPWC.1997.655553","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655553","url":null,"abstract":"The evolution of existing mobile networks to accommodate 3rd generation radio interfaces and the setting up of other core networks for the same purpose present the two approaches to future mobile networking. The ETSI, the ITU as well as the European research project RAINBOW are in the process of developing reference models dealing with the aforementioned approaches. This paper presents the alternative solutions to networking for 3rd generation mobile systems while trying to present a unifying paradigm and concluding with a proposal attempting to bring together the alternative approaches into a single framework.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123824127","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 TMN agent in PCN based on the entity-aspect model 基于实体-方面模型的PCN中的TMN代理
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655549
Soo-Hyun Park, Sang-Hoon Park, D. Baik
{"title":"The TMN agent in PCN based on the entity-aspect model","authors":"Soo-Hyun Park, Sang-Hoon Park, D. Baik","doi":"10.1109/ICPWC.1997.655549","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655549","url":null,"abstract":"The telecommunication management network (TMN) system has been researched for the management of several networks with more efficiency and generality. As the TMN system is implemented depending on different hardware and operating system, there are some problems in development, maintenance & administration of classes in the agent. One of the main problems is that all the agents of the TMN system and the software and data blocks that perform the identical functions must be duplicated and maintained. Therefore, the Q3 interface standard development cannot be defined and the multi-platform cannot be supported in the development of the TMN agent. In order to overcome these problems, the farming methodology that is based on the entity-aspect (EA) model has been suggested. With the methodology, the redundant software and data components in the distributed objects (DO) are moved to the platform independent class repository in the form of componentware. After setting up the framework of the DO, some small componentwares are loaded dynamically to the DO, while others are loaded statistically.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437234","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
A GSM900 multibeam antenna system test bed for capacity and range improvement trials GSM900多波束天线系统容量和距离改进试验试验台
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655516
A.P. Ansbro, G. Cazzatello, M. Crozzoli, A. Fanigliulo, M. Donati
{"title":"A GSM900 multibeam antenna system test bed for capacity and range improvement trials","authors":"A.P. Ansbro, G. Cazzatello, M. Crozzoli, A. Fanigliulo, M. Donati","doi":"10.1109/ICPWC.1997.655516","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655516","url":null,"abstract":"A GSM 900 MHz vertically polarised multibeam antenna testbed is presented incorporating a thin 4 beam microstrip planar antenna, a GSM mobile, a GSM base station (BS) a DSP and a personal computer (PC) to control the measurement procedure. The multibeam antenna covers 120/spl deg/ in azimuth with 4 beams offering an impedance bandwidth >10%, a minimum gain of 15.8 dBi for each beam and has dimensions of 710/spl times/800/spl times/12 mm. The static beamforming is performed at the radio frequency (RF). The results demonstrate a carrier to interference (C/I) improvement together with increased received signal strength indication (RSSI).","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115458606","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
Time bounded services and mobility management in IEEE 802.11 wireless LANs IEEE 802.11无线局域网中的限时服务和移动性管理
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655499
W. Kuo, C. Chan, K. Chen
{"title":"Time bounded services and mobility management in IEEE 802.11 wireless LANs","authors":"W. Kuo, C. Chan, K. Chen","doi":"10.1109/ICPWC.1997.655499","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655499","url":null,"abstract":"An international standard for wireless LAN, IEEE 802.11, has been developed. However, time bounded services, roaming, are not well defined or not even defined. We propose methods to implement these two critical issues with minimum change of IEEE 802.11. Our simulations demonstrate the effectiveness of our proposed methods.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129750743","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: 22
Pre-emptive queue processing scheme for handovers in mobile cellular communication systems 移动蜂窝通信系统中用于切换的抢占队列处理方案
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655472
S. Lakshmeshwar, D. Anvekar
{"title":"Pre-emptive queue processing scheme for handovers in mobile cellular communication systems","authors":"S. Lakshmeshwar, D. Anvekar","doi":"10.1109/ICPWC.1997.655472","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655472","url":null,"abstract":"A new scheme for minimizing handover failure probability in mobile cellular communication systems is presented. The scheme involves a reassignment of priorities for handover requests enqueued in adjacent cells to release a channel for a handover request which is about to fail. Performance evaluation of the new scheme carried out by computer simulation of a four-cell highway cellular system has shown a considerable reduction in handover failure probability.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117176698","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
Design and implementation of modulator ASIC for CDMA WLL system CDMA WLL系统调制器专用集成电路的设计与实现
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655546
J. Lee, Y. Jeong, K. Ha
{"title":"Design and implementation of modulator ASIC for CDMA WLL system","authors":"J. Lee, Y. Jeong, K. Ha","doi":"10.1109/ICPWC.1997.655546","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655546","url":null,"abstract":"We present the design and implementation of modulator ASIC in a direct sequence code division multiple access (DS-CDMA) wireless local loop (WLL) system. The WLL system consists of two links: one is a forward link (fixed station-mobile); the other is a reverse link (mobile-fixed station). We only consider the issues of the ASIC design and implementation in the forward link. We present an efficient structure of the forward link in the WLL system. According to the proposed structure, the modulator ASIC is composed of two channels which perform channel coding, block interleaving and spreading, and with four baseband filters. The ASIC is fabricated using a 0.6 /spl mu/m CMOS process with 40 k gates and was successfully tested on a WLL test-bed system.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122530458","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
Perspectives on the impact of fading on protocols for wireless networks 无线网络协议中衰落影响的展望
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655568
R. Rao
{"title":"Perspectives on the impact of fading on protocols for wireless networks","authors":"R. Rao","doi":"10.1109/ICPWC.1997.655568","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655568","url":null,"abstract":"In this survey paper, we examine issues that arise at progressively higher layers of protocol stacks as a consequence of fading at the physical layer. One recurring theme that is uncovered is the sensitivity of the performance at essentially every level to the higher order statistics of the error process. This leads us to emphasize the need to understand, track and manage the higher order statistics of the error process that is passed up by the physical layer. This representative survey is by no means comprehensive.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126266210","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
Multi-stage receiver for multipath and interference suppression in multi-user CDMA 多用户CDMA中多径和干扰抑制的多级接收机
1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338) Pub Date : 1997-12-17 DOI: 10.1109/ICPWC.1997.655492
Young-Hoon Kim, S. Shamsunder
{"title":"Multi-stage receiver for multipath and interference suppression in multi-user CDMA","authors":"Young-Hoon Kim, S. Shamsunder","doi":"10.1109/ICPWC.1997.655492","DOIUrl":"https://doi.org/10.1109/ICPWC.1997.655492","url":null,"abstract":"Multipath fading in wireless CDMA systems worsens the effects of multiple access interference and also leads to the near-far problem. In this paper, a multi-stage receiver structure is considered for synchronous code division multiple access (S-CDMA) systems observed in multipath. The proposed receiver consists of conventional correlator detectors and matrix decision feedback filters. It is shown that the multipath channel and a bank of correlators in a multi-user CDMA environment can be modeled as a multi-input, multi-output FIR channel. This link between multi-user detection in direct sequence (DS) CDMA and FIR MIMO system identification problem which has been studied extensively in signal processing area enables the use of powerful signal processing techniques. Performance of the proposed receiver structure is studied via simulations.","PeriodicalId":166667,"journal":{"name":"1997 IEEE International Conference on Personal Wireless Communications (Cat. No.97TH8338)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126909401","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信