发布求助
文献互助 智能选刊 最新文献

SBT/IEEE International Symposium on Telecommunications最新文献

筛选
英文 中文
Performance comparison of four MAC protocols for integrated MANs 集成城域网中四种MAC协议的性能比较
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175581
M. A. Marson, Ferrante Neri
{"title":"Performance comparison of four MAC protocols for integrated MANs","authors":"M. A. Marson, Ferrante Neri","doi":"10.1109/ITS.1990.175581","DOIUrl":"https://doi.org/10.1109/ITS.1990.175581","url":null,"abstract":"The performance of four different MAC (medi access control) sublayer protocols proposed for applications in extended local area networks and/or metropolitan area network (MANs) integrating different types of traffic are compared. The four protocols are Expressnet, Fasnet, QPSX (or distributed queue dual bus-DQDB), and FDDI-II (fiber distributed data interface II). Performance results in terms of average and variance of packet access delay, channel utilization, and percentage of packets lost due to lack of buffers are obtained through simulation for variable geographic coverage and data rate, assuming a mix of voice and data traffic.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115051291","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
Optimization of a high bit rate GaAs MESFET amplifier for optical reception 用于光接收的高比特率GaAs MESFET放大器的优化
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175647
R. E. Saad, R. F. Souza
{"title":"Optimization of a high bit rate GaAs MESFET amplifier for optical reception","authors":"R. E. Saad, R. F. Souza","doi":"10.1109/ITS.1990.175647","DOIUrl":"https://doi.org/10.1109/ITS.1990.175647","url":null,"abstract":"A performance optimization of a transimpedance preamplifier used for 1.3- mu m digital optical reception is presented. The influence of the bias resistor on the high-frequency behavior of two GaAs MESFET circuits is analyzed. The two circuit configurations are analyzed with regard to sensitivity and dynamic range, using the Y parameters. It is shown that, although the number of components and the sensitivity of the two configurations are the same, the dynamic range is noticeably different.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"314 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130859433","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
Extension of LANs interconnection service in metropolitan area 城域网互连业务的扩展
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175677
V. Catania, A. Puliafito, L. Vita
{"title":"Extension of LANs interconnection service in metropolitan area","authors":"V. Catania, A. Puliafito, L. Vita","doi":"10.1109/ITS.1990.175677","DOIUrl":"https://doi.org/10.1109/ITS.1990.175677","url":null,"abstract":"The authors propose a modular network architecture based on MAN (metropolitan area network) technology for the interconnection of bridged LANs (local area networks) situated over a metropolitan area. The proposal is based on the definition of interconnection entities operating like MAC bridges and on a routing strategy which offers interesting efficiency and fault tolerance features which would suggest use in public broadband network environments.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131093321","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
Multidimensional signaling for intersymbol interference channels 符号间干扰信道的多维信号
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175617
E. Biglieri, P. McLane
{"title":"Multidimensional signaling for intersymbol interference channels","authors":"E. Biglieri, P. McLane","doi":"10.1109/ITS.1990.175617","DOIUrl":"https://doi.org/10.1109/ITS.1990.175617","url":null,"abstract":"The authors consider the use of multidimensional signaling and block demodulation for digital transmission over intersymbol interference (ISI) channels. As an example, the theory is developed for the unit-memory 1+ alpha z/sup -1/ channel. The authors first explain why multidimensional signals should be used over ISI channels by showing how the minimum Euclidean distance and the cutoff rate R/sub 0/ increase by increasing the dimensionality of the signals transmitted. Two ways of increasing the reliability of transmission over an ISI channel are discussed. The first way consists of increasing the energy associated with the symbols more affected by ISI. The second way uses a coding scheme which selectively protects those symbols. Generalized concatenated-codes are advocated for this purpose.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133807476","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
Network analysis with Ensemble: a tool for performance analysis of circuit switched networks 网络分析与集成:一个工具的性能分析电路交换网络
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175621
C. Binney, W. Wang, E. Pinsky
{"title":"Network analysis with Ensemble: a tool for performance analysis of circuit switched networks","authors":"C. Binney, W. Wang, E. Pinsky","doi":"10.1109/ITS.1990.175621","DOIUrl":"https://doi.org/10.1109/ITS.1990.175621","url":null,"abstract":"The authors introduce a tool, called Ensemble, which uses algorithms and heuristics to analyze large circuit switched networks. This tool could be used to address the following topics: the quantification of interference when an established circuit blocks some other connection requests; how the routes used affect the performance of the network; how much one should charge each connection to maintain a predetermined revenue; the effect of a load change in some connection requests on the overall network and how one should change charges accordingly; and how one should compare network efficiency given a choice of alternate routes.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116571783","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
Approximate solution of closed queueing networks using mathematical formulae 用数学公式近似求解封闭排队网络
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175592
E. Q. Albuquerque
{"title":"Approximate solution of closed queueing networks using mathematical formulae","authors":"E. Q. Albuquerque","doi":"10.1109/ITS.1990.175592","DOIUrl":"https://doi.org/10.1109/ITS.1990.175592","url":null,"abstract":"A practical method which gives the approximate solution of product form closed queueing networks is developed. The starting point is the integral representation of the normalization constant G. This approach was first used by Mitra et al. (1982). A conceptually simpler solution is proposed. It follows that the memory space requirements are dramatically reduced and the processing time is quite small, even on eight-bit personal computers. An important feature of this approach is that the complexity does not grow with the number of chains (classes), but only with the number of noninfinite server stations.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116723839","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 capacity theorem for lattice codes on Gaussian channels 高斯信道上格码的容量定理
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175563
Hélio M. de Oliveira, G. Battail
{"title":"A capacity theorem for lattice codes on Gaussian channels","authors":"Hélio M. de Oliveira, G. Battail","doi":"10.1109/ITS.1990.175563","DOIUrl":"https://doi.org/10.1109/ITS.1990.175563","url":null,"abstract":"A capacity theorem for lattice code signaling is presented which is based on an upper bound on the error probability introduced by R. de Buda (1975). It is shown that lattice codes can be used to achieve the channel capacity for any signal-to-noise ratio (positive statement), and the negative statement of the capacity theorem is also proved. Sphere hardening is shown to result from the weak law of large numbers. The proof allows a better understanding of the application of dense lattices as an efficient signaling alphabet. An expression of the reliability function E(R,C) for lattices in additive white Gaussian noise channels is also presented.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132305274","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
Polarization shift keying: an efficient coherent optical modulation 偏振移键控:一种高效的相干光调制
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175565
S. Benedetto, P. Poggiolini
{"title":"Polarization shift keying: an efficient coherent optical modulation","authors":"S. Benedetto, P. Poggiolini","doi":"10.1109/ITS.1990.175565","DOIUrl":"https://doi.org/10.1109/ITS.1990.175565","url":null,"abstract":"Multilevel digital coherent optical modulation schemes based on the state of polarization of a fully polarized lightwave are proposed and analyzed. Based on the complete statistical characterization of the Stokes parameters, extracted through appropriate signal processing in the presence of shot and additive Gaussian noise, the optimum maximum likelihood receiver operating symbol by symbol is derived. A spectral analysis of the IF (intermediate frequency) signals is also presented. Exact performance in terms of average error probability is found for the proposed multilevel schemes, which turn out to be promising as compared to other standard modulation techniques.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116420549","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
The effect of switch speed, and buffer limitations on the performance of a multichannel ATM switch with output queueing 交换速度和缓冲区限制对带输出队列的多通道ATM交换机性能的影响
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175652
A. Lin, J. Silvester
{"title":"The effect of switch speed, and buffer limitations on the performance of a multichannel ATM switch with output queueing","authors":"A. Lin, J. Silvester","doi":"10.1109/ITS.1990.175652","DOIUrl":"https://doi.org/10.1109/ITS.1990.175652","url":null,"abstract":"The authors present a queuing analysis of an internally nonblocking N*N ATM (asynchronous transfer mode) switch employing multichannel transmission groups with partially shared output buffers. The analysis is based on a discrete-time D/sup (A)//D/c/B queuing model. Bulk input traffic with constant bulk interarrival time (D) and general bulk-size distribution (A) is considered. The impact of switch speedup on the performance is explicitly taken into account. It is found that the switch speedup required to approach the ideal performance, obtained by having the switch fabric run N times as fast as the input and output channels, is small compared with N. This makes the practical realization of the proposed switch architecture feasible.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"323 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122103065","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
Design of LAN/WAN relay systems in the European context 欧洲局域网/广域网中继系统的设计
SBT/IEEE International Symposium on Telecommunications Pub Date : 1990-09-03 DOI: 10.1109/ITS.1990.175629
B. Sales
{"title":"Design of LAN/WAN relay systems in the European context","authors":"B. Sales","doi":"10.1109/ITS.1990.175629","DOIUrl":"https://doi.org/10.1109/ITS.1990.175629","url":null,"abstract":"The problem of local-area-network/wide-area-network (LAN/WAN) interworking, where the WAN part is supported by an X.25 packet switched data network, is addressed. In this situation, a solution consists of extending the support of the connection-oriented characteristics to the LAN part of the communication. This can be achieved by implementing the X.25 level-3 protocol on the LAN stations. Interconnection between LAN and WAN can be realized by gateways supporting the X.25/PLP on both sides. The structure of such a gateway is discussed, focusing on the protocol, relaying, and routing aspects. It is required that this solution guarantee a negligible rate of generated resets and disconnects to allow for the operation of the transport protocol classes 0 or 2.<<ETX>>","PeriodicalId":405932,"journal":{"name":"SBT/IEEE International Symposium on Telecommunications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130022315","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
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