发布求助
文献互助 智能选刊 最新文献

IEEE International Conference on Communications, Including Supercomm Technical Sessions最新文献

筛选
英文 中文
Evolution of fiber-to-the-pedestal distribution architectures 光纤到基座分布架构的演变
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117242
W. A. Weeks, J. Jensen
{"title":"Evolution of fiber-to-the-pedestal distribution architectures","authors":"W. A. Weeks, J. Jensen","doi":"10.1109/ICC.1990.117242","DOIUrl":"https://doi.org/10.1109/ICC.1990.117242","url":null,"abstract":"Possible avenues for evolution of three fiber-to-the-pedestal architectures, i.e. the star, bus, and physical star/logical bus, are examined. Each architecture is analyzed on its technical and economic ability to evolve to potential future service offerings. The bus architecture does not appear to hold much promise as a viable solution for the distribution of future broadband service needs. Current analysis favors the placement of a star or logical bus in the distribution plant and the design of a pedestal which is capable of future service evolution. It is noted that the movement of fiber into the subscriber drop will ultimately hinge on the demand for broadband services.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030451","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
DSP-based architecture for real-time T1 bandwidth management and control 基于dsp的实时T1带宽管理和控制体系结构
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117166
M. Cohen
{"title":"DSP-based architecture for real-time T1 bandwidth management and control","authors":"M. Cohen","doi":"10.1109/ICC.1990.117166","DOIUrl":"https://doi.org/10.1109/ICC.1990.117166","url":null,"abstract":"A proposal is advanced for a synchronous bitstream processor (SYNBIP) that can address nontraditional applications fostered by the proliferation of T1 multiplexers and other high-performance network equipment. SYNBIP can be viewed as a specialized DSP (digital signal processor) optimized for time-division multiplexed applications. SYNBIP can supplant traditional hardware-based solutions that are limited in scope and flexibility by using a software-based architecture that does not impede the realization of new network capabilities. By acting as a generic communications platform, it can be incorporated into a wide range of network equipment to address emerging market opportunities. The author reviews the basics of DS1 communication, explores the internal VLSI architecture, I/O (input/output) data flow, and software structure, and illustrates how this device can support a popular network application: digital data service (DDS).<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122523341","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
Low data rate video communications 低数据速率视频通信
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117335
P. C. Taylor
{"title":"Low data rate video communications","authors":"P. C. Taylor","doi":"10.1109/ICC.1990.117335","DOIUrl":"https://doi.org/10.1109/ICC.1990.117335","url":null,"abstract":"It is pointed out that progress in technology is resulting in a greater coverage of digital data communication systems, as well as vast increases in the processing power of integrated circuits, particularly for video and data processing. The author describes the methods of motion video communication over integrated services digital networks and other low-data-rate links resulting from these advances in technology. Three main areas are covered: video conferencing, video telephony, and video surveillance. The different criteria for these areas are described, together with solution techniques and implementations. Associated topics, such as world standards and additional features and facilities, are also discussed.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121886147","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
Technology for millimetre wave systems 毫米波系统技术
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117051
R. Blake
{"title":"Technology for millimetre wave systems","authors":"R. Blake","doi":"10.1109/ICC.1990.117051","DOIUrl":"https://doi.org/10.1109/ICC.1990.117051","url":null,"abstract":"Summary form only given. The use of the millimeter-wave spectrum above 30 GHz for telecommunications offers considerable bandwidth for broadband services, but power limitations and rain attenuation constrain its prospects to small 'cell' or short-hop systems. Nevertheless, given suitable low-cost 'consumer' technology, there is considerable attraction for local access and interconnect services where short frequency reuse distances give high spectrum utilization. For situations in which cable TV is too expensive to install and satellite TV dishes are too obtrusive, use of millimeter waves for 'radio cable' TV distribution is one potential application. Such a system is being developed by British Telecom (UK), and a demonstrator is now in operation in Saxmundham, a small town in the UK. Earlier this year, the UK spectrum regulatory authority announced the allocation of the band 40.5-42.5 for this service.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117044435","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 procedure for optimum or rotationally invariant trellis codes 设计程序的最佳或旋转不变的网格代码
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117151
L. Berg, R. Buz, P. McLane, M. Turgeon
{"title":"Design procedure for optimum or rotationally invariant trellis codes","authors":"L. Berg, R. Buz, P. McLane, M. Turgeon","doi":"10.1109/ICC.1990.117151","DOIUrl":"https://doi.org/10.1109/ICC.1990.117151","url":null,"abstract":"The authors present examples for a search-free, step-by-step design procedure for trellis coded modulation that involves both linear and nonlinear convolutional encoders. Such a procedure starts with a derivation of a trellis description of the code and ends with the series combination of a convolutional encoder and a natural bit mapper to modulation symbols to generate the code. The derivation of this structure is obtained from the analytic description of the code, which also could be used as the modulated signal generator. The examples presented include an eight-dimensional PSK (phase-shift keying) code and a nonlinear, rotationally invariant code.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128443897","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
Analysis of self-noise in clock recovery using arbitrary nonlinearity 任意非线性时钟恢复中的自噪声分析
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117320
T. Fang
{"title":"Analysis of self-noise in clock recovery using arbitrary nonlinearity","authors":"T. Fang","doi":"10.1109/ICC.1990.117320","DOIUrl":"https://doi.org/10.1109/ICC.1990.117320","url":null,"abstract":"The author describes an analytical method by which the in-phase and quadrature spectra of self-noise in a clock recovery circuit using arbitrary nonlinearity can be computed. The analytical results are confirmed by simulation using a time-truncated Nyquist pulse having a raised-cosine rolloff. In contrast to previous work which computed the spectra of discretized output of the nonlinearity operator, this analysis computes spectra for the continuous signal. Significant differences between results based on the discretized model and those based on the continuous model are illustrated by an example.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556372","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 effect of imperfect carrier sensing on nonpersistent carrier sense multiple access 不完全载波感知对非持久载波感知多址的影响
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117274
S. Glisic, R. Rao, L. Milstein
{"title":"The effect of imperfect carrier sensing on nonpersistent carrier sense multiple access","authors":"S. Glisic, R. Rao, L. Milstein","doi":"10.1109/ICC.1990.117274","DOIUrl":"https://doi.org/10.1109/ICC.1990.117274","url":null,"abstract":"An analysis of nonpersistent CSMA (carrier sense multiple access) in radio channels with imperfect carrier sensing is presented. Numerical results show that a careful optimization of the channel state detector parameter must be performed in order to get good system performance; otherwise, the system will tend to behave like unslotted Aloha.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129696069","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: 21
Effects of bandwidth on microwave line-of-sight channel modelling and digital radio performance prediction 带宽对微波视距信道建模和数字无线电性能预测的影响
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117254
S. Haggman, S. J. Halme, F. Torikka
{"title":"Effects of bandwidth on microwave line-of-sight channel modelling and digital radio performance prediction","authors":"S. Haggman, S. J. Halme, F. Torikka","doi":"10.1109/ICC.1990.117254","DOIUrl":"https://doi.org/10.1109/ICC.1990.117254","url":null,"abstract":"A technique of microwave line-of-sight channel transfer function measurements which makes a new approach to channel modeling possible is described. Propagation is divided into two parts: dispersive fading (DF, IBAD>1 dB) and wideband flat fading (FF, IBAD<1 dB), which are disjoint in time. The DF-part is modeled with the joint distribution of a four-parameter two-part channel representation with a constant delay, and the FF-part which includes signal enhancement is modeled with the fade depth distribution. Results for several measurement bandwidths up to 40 MHz clearly show that the DF-model depends on bandwidth while the FF-model depends only moderately on bandwidth. A new outage prediction method based on the actual channel models shows FF-outage to be insignificant. However, DF-outage depends strongly on the flat fade margin. A comparison with the conventional outage prediction method shows that, although quite different results are indicated for the DF- and FF-outage contributions, there is a rather good agreement between total outage predictions.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129093708","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
Subscriber access scheme for broadband ISDN 宽带ISDN用户接入方案
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117161
K. Iguchi, H. Takeo, S. Amemiya, K. Tezuka
{"title":"Subscriber access scheme for broadband ISDN","authors":"K. Iguchi, H. Takeo, S. Amemiya, K. Tezuka","doi":"10.1109/ICC.1990.117161","DOIUrl":"https://doi.org/10.1109/ICC.1990.117161","url":null,"abstract":"The authors discuss the architecture of broadband integrated services digital network (B-ISDN) in accordance with CCITT standardization and propose a ring-based subscriber access network to obtain higher transmission efficiency and flexibility in bandwidth allocation. A distributed access control scheme is used for this application because of its large network size. They study customer premises networks based on the agreement of the Geneva meeting of June 1989, and propose a physical star/logical bus network configuration for the introduction phase of B-ISDN. It allows easy and reliable realization of the broadband customer premises network. They propose an optical passive bus as the most economical configuration because it is applicable to both residential and small-business customers. It is also applicable to large-business customers as the branching network of the other active backbone network. The authors study the feasibility of this optical passive bus, focusing on medium access control.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114226847","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 real-time HDTV signal processor: HD-VSP-system and applications 一种实时高清电视信号处理器:hd - vsp系统及其应用
IEEE International Conference on Communications, Including Supercomm Technical Sessions Pub Date : 1990-04-16 DOI: 10.1109/ICC.1990.117234
I. Tamitani, H. Harasaki, T. Nishitani
{"title":"A real-time HDTV signal processor: HD-VSP-system and applications","authors":"I. Tamitani, H. Harasaki, T. Nishitani","doi":"10.1109/ICC.1990.117234","DOIUrl":"https://doi.org/10.1109/ICC.1990.117234","url":null,"abstract":"A programmable real-time HDTV (high-definition television) video signal processor (HD-VSP) has been developed. The HD-VSP is composed of multiprocessor clusters. Each cluster is compatible with a previously reported VSP. The VSP has introduced flexible software control capability in conventional TV signal processing. In order to expand such flexibility for HDTV signals, the developed HD-VSP employs a signal conversion technique. The HDTV sampling rate is reduced to that of plural conventional TV signals, each of which can be processed by VSP parallel multiprocessor clusters. Therefore, programs developed for conventional TV signals on the VSP are also applied to HDTV signals by the new system. Several coder programs, including a discrete cosine transform coder and an intraframe differential PCM (pulse code modulation) coder, are developed to evaluate real-time HDTV coding efficiency.<<ETX>>","PeriodicalId":126008,"journal":{"name":"IEEE International Conference on Communications, Including Supercomm Technical Sessions","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121463983","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
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