发布求助
文献互助 智能选刊 最新文献

11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)最新文献

筛选
英文 中文
A novel solution to wireless multimedia application: the hybrid OFDM/CDMA/SFH approach 一种新的无线多媒体应用解决方案:OFDM/CDMA/SFH混合方案
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881642
M. Jankiraman, R. Prasad
{"title":"A novel solution to wireless multimedia application: the hybrid OFDM/CDMA/SFH approach","authors":"M. Jankiraman, R. Prasad","doi":"10.1109/PIMRC.2000.881642","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881642","url":null,"abstract":"This paper proposes a novel signal scheme called \"hybrid OFDM/CDMA/SFH approach\" which combines OFDM with CDMA and SFH to generate a system functionally superior to MC-CDMA systems. The paper describes the merits and demerits of the proposed system and publishes simulation results in AWGN and fading channels.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132776404","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: 7
Supporting voice over EGPRS: system design and capacity evaluation 支持语音EGPRS:系统设计和容量评估
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881380
X. Qiu, L. Chang, K. Chawla, J. Chuang, N. Sollenberger, E. J. Whitehead
{"title":"Supporting voice over EGPRS: system design and capacity evaluation","authors":"X. Qiu, L. Chang, K. Chawla, J. Chuang, N. Sollenberger, E. J. Whitehead","doi":"10.1109/PIMRC.2000.881380","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881380","url":null,"abstract":"We investigate the possibility of supporting voice over EGPRS as a potential evolutionary path for 2/sup nd/ generation wireless TDMA systems. We discuss different voice bearer designs for EGPRS radio access networks. We demonstrate how the operating mode can be chosen at each layer in the protocol stack to form appropriate voice bearers, and quantify the performance of these bearers. Different system control options are examined, including frequency reuse factor, MAC layer operating mode, frequency hopping, power control, and dynamic channel assignment. We find that a baseline EGPRS system using random channel assignment and no power control can support up to 27 Erlang/Site/MHz, which is significantly higher than the capacity of current 2/sup nd/ generation TDMA systems. In addition, the packet-switched nature of EGPRS makes it a very flexible system. We conclude that EGPRS offers an excellent evolutionary path for 2/sup nd/ generation TDMA systems.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134473209","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: 3
A new access persistence control mechanism at MAC level for data wireless cellular networks 一种新的数据无线蜂窝网络MAC级访问持久性控制机制
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881606
W. Ajib, P. Godlewski
{"title":"A new access persistence control mechanism at MAC level for data wireless cellular networks","authors":"W. Ajib, P. Godlewski","doi":"10.1109/PIMRC.2000.881606","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881606","url":null,"abstract":"We propose and present a new access persistence control mechanism for packet cellular networks, such as General Packet Radio Service (GPRS) system, in order to improve the MAC layer performance. The MAC layer in GPRS make use of slotted ALOHA protocol combined with a specific retransmission mechanism to establish the physical connection. The main object of the new mechanism is to avoid the mixture of retransmitted access request and the new ones. The primary profit is the decrease of the transmission attempts number needed to successfully transmit an access request. Thus, it decreases the delay of transmission of one access request and the access requests blocking percent.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131681666","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
A novel channel identification method for downlink multicarrier CDMA systems 一种新的下行多载波CDMA系统信道识别方法
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881399
C. Escudero, D. Iglesia, L. Castedo
{"title":"A novel channel identification method for downlink multicarrier CDMA systems","authors":"C. Escudero, D. Iglesia, L. Castedo","doi":"10.1109/PIMRC.2000.881399","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881399","url":null,"abstract":"This paper presents a new blind channel identification method for downlink multicarrier CDMA (MC-CDMA) systems. This technique uses subspace decomposition for channel identification and exploits the orthogonality property between the noise subspace and the received user codes to obtain a channel identification algorithm. It is shown that in order to increase the number of simultaneous users, and to still have a good estimation of the channel, a modification of the MC-CDMA system has to be considered by using codes larger than the spreading gain. The performance of this algorithm is analyzed by deriving a theoretical expression of the mean square error (MSE) estimation. This expression is compared with numerical results of some computer simulations to illustrate the validity of the analysis. The paper also introduces a linear detector for this environment.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115545222","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
Fourth generation: now, it is personal! 第四代:现在，它是个人的!
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881574
J. Pereira
{"title":"Fourth generation: now, it is personal!","authors":"J. Pereira","doi":"10.1109/PIMRC.2000.881574","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881574","url":null,"abstract":"At a time when the second generation (2G) enjoys tremendous success and the third generation (3G, also known as IMT-2000) is nearing deployment, at least in Japan and Europe (2001-2), and with operators willing to pay billions of Euro/USD for the respective licenses, discussing fourth generation (4G) might seem premature, even far-fetched. But it is in this context, further dominated by the pervasiveness of IP and the advent of reconfigurable radio, that we discuss the need to start thinking now about the fourth generation: the lapse between the initial studies, the assignment of spectrum, and the commercial deployment is always large, in the order of 10/sup +/ years. Contrary to some approaches, our perspective of 4G is not one of solely higher data rates, still with a public service focus. What is at stake is a different perspective of service, more than yet another technology revolution, and this constitutes a bigger challenge: the focus is now squarely on the user, not on the operators/service providers. Fourth generation will finally put the user in control, as they will be able to decide at every occasion (application), and for every environment (mobility, coverage), the right system, and even the right terminal; providing them personalized service irrespective of the underlying network, and in fact making the best use of the scarce spectrum by directing each data stream in a communication session to the most appropriate (i.e., efficient) network.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115547800","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: 140
A comparison of convolutional and Walsh coding in OFDM wireless LAN systems OFDM无线局域网系统中卷积编码与沃尔什编码的比较
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881411
A. McCormick, P. Grant, J. Thompson
{"title":"A comparison of convolutional and Walsh coding in OFDM wireless LAN systems","authors":"A. McCormick, P. Grant, J. Thompson","doi":"10.1109/PIMRC.2000.881411","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881411","url":null,"abstract":"A Walsh coded OFDM system is described which could provide an alternative to convolutional coding in packet based wireless LAN systems. This allows lower complexity decoding and lower peak-to-average power ratios. This system is compared with a hard decision decoded convolutional receiver, based on the OFDM specifications for the IEEE 802.11 and ETSI HIPERLAN/2 physical layer standards. In multipath environments, the high diversity Walsh coded OFDM system shows large improvements over uncoded systems and similar performance to the more computationally complex convolutional receivers.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115778285","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
Reuse efficiency in a quasi-real CDMA network 准真实CDMA网络中的复用效率
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881396
C. K. d'Ávila, M. Yacoub
{"title":"Reuse efficiency in a quasi-real CDMA network","authors":"C. K. d'Ávila, M. Yacoub","doi":"10.1109/PIMRC.2000.881396","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881396","url":null,"abstract":"This paper presents a simple and exact method that can be used to evaluate the frequency reuse efficiency within CDMA networks that are closer to the real networks. In this method, any traffic distribution can be used and the cells may be positioned anywhere with respect to each other, therefore, not necessarily at the well-known hexagonal grid. This later feature allows for overlaps and gaps between cells.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114575557","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
Acquisition of direct-sequence spread-spectrum signal with parallel matched filters 用并行匹配滤波器获取直接序列扩频信号
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881621
M. Yamada, Y. Kamio, Y. Wada
{"title":"Acquisition of direct-sequence spread-spectrum signal with parallel matched filters","authors":"M. Yamada, Y. Kamio, Y. Wada","doi":"10.1109/PIMRC.2000.881621","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881621","url":null,"abstract":"A new synchronization acquisition detector for a direct-sequence spread-spectrum (DS-SS) signal is described and evaluated. The detector uses a parallel set of matched filters with multi-valued code-weights as filter-coefficients. It selects the largest sample in a similar way to the conventional parallel acquisition detector, but it uses a much more precise decision scheme. Since the detector uses matched filters with multi-valued coefficients, it can take the synchronized average of each sample to decide whether the acquisition is established or not for shorter duration than the conventional detector. Computer simulation shows that the proposed detector outperforms conventional parallel acquisition detector because its decision mode is very accurate and its synchronized average scheme improves the signal-to-noise ratio (SNR).","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116985829","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
An overview of common packet channel (CPCH), an optimum wireless Internet mechanism in 3GPP W-CDMA system and comparison of various UMTS non real time data deployment options 概述了3GPP W-CDMA系统中最优的无线互联网机制CPCH，并对各种UMTS非实时数据部署方案进行了比较
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881454
K. Parsa
{"title":"An overview of common packet channel (CPCH), an optimum wireless Internet mechanism in 3GPP W-CDMA system and comparison of various UMTS non real time data deployment options","authors":"K. Parsa","doi":"10.1109/PIMRC.2000.881454","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881454","url":null,"abstract":"With the rise of interest in wireless Internet and wireless packet data communications on one hand and explosion of interest in IP and packet-switched based networks on the other, it is beneficial to bring the packet switching capability to the air interface which is the last hop in network. The common packet channel (CPCH) has been included in the third generation wideband direct sequence code-division multiple access (3G W-CDMA) technical specifications to meet this growing demand and need in an efficient manner. This paper will address the CPCH benefits, applications, CPCH access method and comparison of various UMTS base node deployment scenarios.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116366312","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: 7
High data rate wireless system solution: 60 GHz/5 GHz dual frequency operation 高数据速率无线系统解决方案:60 GHz/5 GHz双频工作
11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525) Pub Date : 2000-09-18 DOI: 10.1109/PIMRC.2000.881417
V. Brankovic, T. Dolle, Tino Konschak, D. Krupezevic, M. Ratni
{"title":"High data rate wireless system solution: 60 GHz/5 GHz dual frequency operation","authors":"V. Brankovic, T. Dolle, Tino Konschak, D. Krupezevic, M. Ratni","doi":"10.1109/PIMRC.2000.881417","DOIUrl":"https://doi.org/10.1109/PIMRC.2000.881417","url":null,"abstract":"The data rate demand for wireless systems due to a variety of applications is permanently growing. To meet the increased demand a new generation of systems has to be targeted. Due to the common spectrum availability it is required to envisage possible solutions at frequencies in the higher microwave and lower MM-wave bands. However, possible future systems has to additionally provide features of utilising technologies having the prospective of being low cost in the near future, to provide easy backward capability to lower generation system and comprehensive interworking functionality. In this paper possible system solutions for future dual frequency 60 GHz/5 GHz systems are addressed, trying to give an answer for the major stated requirements. Both 60 GHz systems and 5 GHz systems (HIPERLAN II, IEEE 801.11a) are non-licensed systems having the potential for mass market introduction in the near future.","PeriodicalId":301441,"journal":{"name":"11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116480479","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: 2
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：604180095
Book学术官方微信