发布求助
文献互助 智能选刊 最新文献

[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications最新文献

筛选
英文 中文
Methodology and tools for mechanization of telecommunication systems specification and development in real-time environment 实时环境下电信系统机械化规范和开发的方法和工具
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268090
S. Devendra, K. Verma, R.D. Jha
{"title":"Methodology and tools for mechanization of telecommunication systems specification and development in real-time environment","authors":"S. Devendra, K. Verma, R.D. Jha","doi":"10.1109/ICC.1992.268090","DOIUrl":"https://doi.org/10.1109/ICC.1992.268090","url":null,"abstract":"Computer aided software engineering (CASE) tools for supporting the mechanization of telecommunication systems specification and development in a real-time environment are discussed. The authors focus on the methodology, which includes the processes and procedures for the telecommunication system development life cycle model. In this model each individual phase is modeled and prototyped. The customer's feedback is always required for verification. The development takes place on an interactive basis. The proposed methodology and tools provide a homogeneous solution for: (a) specifying the functions expected of the systems; (b) transforming the specifications into graphical representations; (c) designing the software; (d) checking that the design complies fully with the specification; (e) automated code generation; and (f) managing specification-design-code traceability through all modifications and updates. Analyzing program complexity and quality is also feasible through complexity and quality matrixes.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"22 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132974393","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
Virtually fixed channel assignment for cellular radio-telephone systems: a model and evaluation 蜂窝式无线电话系统的虚拟固定信道分配:模型与评价
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268056
Z. Xu, P. Mirchandani
{"title":"Virtually fixed channel assignment for cellular radio-telephone systems: a model and evaluation","authors":"Z. Xu, P. Mirchandani","doi":"10.1109/ICC.1992.268056","DOIUrl":"https://doi.org/10.1109/ICC.1992.268056","url":null,"abstract":"A promising approach to efficient channel assignment is the virtually fixed channel assignment (VFCA) method. In VFCA, the channels are nominally assigned as in conventional fixed assignment schemes, but cells are allowed to borrow channels from one another. An analytical model is developed for a cellular telephone system that uses VFCA, where the channel assignment process of a cell in the system is modeled as a two-dimensional Markov chain. The analytical results are compared with simulation results, and the model is shown to be an efficient tool for evaluating performance and traffic characteristics of VFCA system.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132988078","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: 26
A very high speed data link control system using multiple protocol controllers 一种使用多个协议控制器的高速数据链路控制系统
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268070
T. Akaike, K. Ishikawa, K. Saito, M. Mito
{"title":"A very high speed data link control system using multiple protocol controllers","authors":"T. Akaike, K. Ishikawa, K. Saito, M. Mito","doi":"10.1109/ICC.1992.268070","DOIUrl":"https://doi.org/10.1109/ICC.1992.268070","url":null,"abstract":"A protocol control system architecture that provides excellent processing performance for data communications and utilizes a high speed network such as asynchronous transfer mode (ATM) is discussed. The system consists of multiple protocol controllers (PCs) connected in parallel and employs the distributed multilink method, in which the multilink procedure is distributed to each PC. The method features a distributed algorithm for transmission allocation at the transmitting side and a resequence algorithm at the receiving side. Characteristics of the method are analyzed and the system performance is evaluated. The system can provide a 90-fold performance improvement over a single PC.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127911618","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
Network architectures for digital video library service in mid-1990s 90年代中期数字视频图书馆服务的网络架构
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.267969
B. Amin-Salehi, M. Kerner
{"title":"Network architectures for digital video library service in mid-1990s","authors":"B. Amin-Salehi, M. Kerner","doi":"10.1109/ICC.1992.267969","DOIUrl":"https://doi.org/10.1109/ICC.1992.267969","url":null,"abstract":"Alternative network architectures supporting digital video delivery services are compared. Specifically, networks supporting residential entertainment video applications, which have unique requirements in the areas of transport, signaling, and switching are discussed. Two network architectures are described, one based on synchronous optical network (SONET) transport and the other on asynchronous transfer mode (ATM) transport. These architectures are predicated on fiber-to-the-curb (FTTC) technology for customer access.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125350101","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
Receiver buffer control for variable bit-rate real-time video 可变比特率实时视频的接收器缓冲控制
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268222
R. Lau, P. Fleischer, S. Lei
{"title":"Receiver buffer control for variable bit-rate real-time video","authors":"R. Lau, P. Fleischer, S. Lei","doi":"10.1109/ICC.1992.268222","DOIUrl":"https://doi.org/10.1109/ICC.1992.268222","url":null,"abstract":"Lossless (or entropy) coders can substantially reduce the average bit rate by exploiting the statistical properties of the signal, but they also tend to generate highly variable bit rates. To deal with the instantaneous data rate variation buffers are needed both in the transmitter and the receiver. The authors address the issues involved in the intelligent control of the receiver buffer with particular reference to broadband integrated services digital network (BISDN) applications. The minimum receiver buffer size required to achieve operation without underflow or overflow is derived. Techniques for initializing the receive buffer properly are also described. The effects of system imperfection such as network delay and imperfect clock recovery are considered. These methods were used to control the receive buffer in an HDTV asynchronous transfer mode (ATM) BISDN experimental research prototype codec currently being developed.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126634873","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
CCITT H.261 compatible mixed bit rate coding of video for ATM networks ATM网络视频的CCITT H.261兼容混合比特率编码
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268223
S. Minami
{"title":"CCITT H.261 compatible mixed bit rate coding of video for ATM networks","authors":"S. Minami","doi":"10.1109/ICC.1992.268223","DOIUrl":"https://doi.org/10.1109/ICC.1992.268223","url":null,"abstract":"A mixed bit rate (MBR) video coding method is presented for asynchronous transfer mode (ATM) networks which has communication compatibility between constant bit rate (CBR) video codecs and variable bit rate (VBR) codecs. In MBR video coding, essential information is encoded at a CBR by using a conventional CBR coding method such as H.261 and enhancement information is encoded at a VBR to attain constant image quality. To realize the MBR coding of video, the conventional embedded pulse code modulation (PCM) quantization is extended by applying the requantization method only to the least significant bit (LSB) of the quantizer output. In the EX-EMB PCM method, the most significant part and least significant part (MSP/LSP) separation of embedded PCM and an additional threshold for the requantizer are dynamically determined to attain a desired distortion. The MBR codec with EX-EMB PCM was evaluated by computer simulations. The simulation results showed that the proposed method was effective not only for improving video quality but also it prevented the degradations of image quality at the scene change by increasing the bit rate for the VBR channel.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126740130","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
A distributed-processing platform for communication network systems based on SDA 基于SDA的通信网络系统分布式处理平台
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268216
M. Matsuo, Y. Kondo
{"title":"A distributed-processing platform for communication network systems based on SDA","authors":"M. Matsuo, Y. Kondo","doi":"10.1109/ICC.1992.268216","DOIUrl":"https://doi.org/10.1109/ICC.1992.268216","url":null,"abstract":"The authors propose a distributed-processing platform for communication network systems, such as telecommunication network systems, intelligent network systems, and telecommunication management network systems, that is based on the software defined architecture (SDA) concept under study at NTT. This platform is presented for quick and easy construction and dynamic reconstruction of those network systems. It supports message handling with access, location and duplication transparency, dynamic reallocation without processing interruption and a uniform interface for resource control from any node.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126925471","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
ATC-based hi-fi audio coding for ATM networks 基于atc的ATM网络高保真音频编码
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268290
F. Hazu, I. Kuroda, T. Nishitani
{"title":"ATC-based hi-fi audio coding for ATM networks","authors":"F. Hazu, I. Kuroda, T. Nishitani","doi":"10.1109/ICC.1992.268290","DOIUrl":"https://doi.org/10.1109/ICC.1992.268290","url":null,"abstract":"The authors propose an adaptive transform coding (ATC)-based hi-fi audio coding method for asynchronous transfer mode (ATM) networks. To maintain robustness despite cell loss, a novel layered coding scheme has been employed in ATC. In this approach, higher/lower priority is assigned to most/least significant bits, rather than to lower/higher frequency bands, as is commonly done in video coding. The number of bits for most/least significant bits is determined on the basis of two different coding-rates. Subjective test results for 192 kbps/96 kbps coding show that, even under conditions of cell loss, it is possible to maintain a level of quality equivalent to 192 kbps coding quality. The proposed approach appears to be promising for high-quality hi-fi audio signal transmission in ATM networks.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126518700","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
TCM schemes with predistortion techniques on nonlinear channels 基于非线性信道预失真技术的TCM方案
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.268206
A. Brajal, A. Chouly, K. Fazel
{"title":"TCM schemes with predistortion techniques on nonlinear channels","authors":"A. Brajal, A. Chouly, K. Fazel","doi":"10.1109/ICC.1992.268206","DOIUrl":"https://doi.org/10.1109/ICC.1992.268206","url":null,"abstract":"The performance of predistorted trellis-coded modulation (TCM) schemes operating over a compensated nonlinear channel is discussed. Compensation methods are chosen in such a way that constellation warping is balanced and intersymbol interference is reduced. This is done by using an adaptive process that includes the effects of the system memory in the computation of predistorted points. Using optimal TCM schemes for a linear channel it is shown that the same coding gains can be achieved on a compensated nonlinear channel and on a linear channel when the 16-QAM (quadrature amplitude modulation) signal constellation is used. The focus is on the comparison of the results obtained for different codes and several predistortion methods in such a way so that the attainable performance can be studied.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"992 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123097262","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
Integration of rules and linear program models in network traffic management 网络流量管理中规则与线性规划模型的集成
[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI: 10.1109/ICC.1992.267980
G. Martini, C. Moiso, M. Porta
{"title":"Integration of rules and linear program models in network traffic management","authors":"G. Martini, C. Moiso, M. Porta","doi":"10.1109/ICC.1992.267980","DOIUrl":"https://doi.org/10.1109/ICC.1992.267980","url":null,"abstract":"The problem discussed is that of traffic management in a telephone network, when serious congestion states occur caused by external factors. In these situations, the network, planned for normal busy-period loads, is unable to carry offered traffic due to either abnormal traffic patterns or network element failure, and the service performance degrades. The authors describe an approach based on the integration of symbolic rules and linear program models, based on the constraint logic programming (CLP) paradigm, to overcome the problems. By using this approach, they have developed an experimental decision support system to assist the network supervisors in the selection of a temporary alternative routing to improve the network performance during serious congestion states. The support system has a user interface to interact with the supervisor. The supervisors can require different solutions computed according to different sets of parameters, compare them, and then select the one that they prefer.<<ETX>>","PeriodicalId":170618,"journal":{"name":"[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120946096","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
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