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Proceedings of ICC '93 - IEEE International Conference on Communications最新文献

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Performance of uncoded overlapping PPM under communication constraints 通信约束下非编码重叠PPM的性能
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397317
H. Shalaby
{"title":"Performance of uncoded overlapping PPM under communication constraints","authors":"H. Shalaby","doi":"10.1109/ICC.1993.397317","DOIUrl":"https://doi.org/10.1109/ICC.1993.397317","url":null,"abstract":"The performance of uncoded overlapping pulse position modulation (OPPM) with at most two pulse positions per pulsewidth is investigated for an optical direct-detection channel under communication constraints. It is shown that under bandwidth and throughput constraints OPPM, with two pulse positions per pulsewidth, outperforms PPM when the overlap is chosen properly and the throughput is greater than 0.2 nats/slot. This makes it possible to increase the throughput and/or decrease the energy of the OPPM system, while maintaining the same performance as PPM. The energy saving when using OPPM instead of PPM to transmit reliably a given amount of information is determined for different values of overlapping indices. The maximum throughput that can be achieved under average power and bandwidth constraints (with error probability not exceeding 10/sup -5/) is also determined.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124946387","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: 13
High-bit-rate copper and fiber-to-the-curb video upgrade strategies 高比特率铜缆和光纤到路边的视频升级策略
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397611
R. Menendez, D. Waring, D. Wilson
{"title":"High-bit-rate copper and fiber-to-the-curb video upgrade strategies","authors":"R. Menendez, D. Waring, D. Wilson","doi":"10.1109/ICC.1993.397611","DOIUrl":"https://doi.org/10.1109/ICC.1993.397611","url":null,"abstract":"Alternative approaches to providing one-way 1.5-Mb/s transport for video and enhanced data services to the home via fiber or copper distribution facilities are investigated. The dedicated downstream 1.5-Mb/s signal is sufficient for MPEG-1 or VCR-quality compressed video. In addition to a 1.5-Mb/s signal, a bidirectional low-speed control channel is required (e.g., for channel selection or interactive video). The emphasis is on the evolution of loop access systems originally installed for POTS (plain old telephone service) Consequently, both the high-speed data and control signals must be added in a manner consistent with the simultaneous provision of POTS over an existing installed infrastructure. In addition to exploring a class of technology options, the associated incremental increase in the installed first cost is determined.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"449 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125797775","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
Multiwavelength survivable ring network architectures 多波长可存活环网架构
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397474
A. Elrefaie
{"title":"Multiwavelength survivable ring network architectures","authors":"A. Elrefaie","doi":"10.1109/ICC.1993.397474","DOIUrl":"https://doi.org/10.1109/ICC.1993.397474","url":null,"abstract":"A new architecture for implementing unidirectional and bidirectional self-healing interoffice ring networks using wavelength division multiplexing (WDM) technology for growth is proposed. The working ring uses all-optical drop-and-add multiplexers at each office and the protection path uses optical amplifiers and optical switches. The use of WDM technology, combined with all-optical drop-and-add multiplexers, accommodates growth to a network capacity of more than 1 Tb/s.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123271035","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: 106
Fractionally spaced blind equalization and estimation of FIR channels 分数间隔盲均衡与FIR信道估计
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397300
Jitendra Tugnait
{"title":"Fractionally spaced blind equalization and estimation of FIR channels","authors":"Jitendra Tugnait","doi":"10.1109/ICC.1993.397300","DOIUrl":"https://doi.org/10.1109/ICC.1993.397300","url":null,"abstract":"The author considers the problem of blind estimation and equalization of digital communication FIR (finite impulse response) channels using fractionally spaced samples. The problem is cast in a mathematical framework of parameter estimation for a vector stationary process with a single input (information sequence) and multiple outputs, by using a time-series representation of a cyclostationary process. The channel parameters are estimated by nonlinear batch optimization of a quadratic cumulant matching criterion involving second and fourth order cumulants of the received data. A new algorithm is proposed for (asymptotically) globally convergent, linear estimation of the FIR channel parameters where the FIR model order is not necessarily known. A simulation example using QAM (quadrature amplitude modulation) signals is presented.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125568326","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: 16
Performance of a prioritized nonblocking switch under hotspot traffic conditions with head of line resolution 热点流量条件下具有线头分辨率的优先无阻塞交换机的性能
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397362
S. Bohm, A. Elhakeem, V. Murthy
{"title":"Performance of a prioritized nonblocking switch under hotspot traffic conditions with head of line resolution","authors":"S. Bohm, A. Elhakeem, V. Murthy","doi":"10.1109/ICC.1993.397362","DOIUrl":"https://doi.org/10.1109/ICC.1993.397362","url":null,"abstract":"A performance analysis under hotspot traffic conditions on a four-level prioritized nonblocking baseband switch for use onboard a switching multibeam satellite is described. Both finite input and output buffering, as well as speedup, are employed to reduce the loss, which is critical in a satellite application. In order to improve the performance of the two lowest-priority users, a head of line resolution (HLR) technique is implemented. It is shown that, with HLR and the proper adjustment of the switch speedup and the input and output buffers, the loss can be substantially reduced. It is also shown that the dependence on the switch size which is characteristic of the unbuffered discard case is substantially reduced, even in a prioritized environment. This allows larger switches to be implemented.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126660938","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
Document Transfer and Manipulation (DTAM) standard for telematic applications 远程信息处理应用的文档传输和操作(DTAM)标准
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397324
K. Nakao, H.D. Schulz
{"title":"Document Transfer and Manipulation (DTAM) standard for telematic applications","authors":"K. Nakao, H.D. Schulz","doi":"10.1109/ICC.1993.397324","DOIUrl":"https://doi.org/10.1109/ICC.1993.397324","url":null,"abstract":"DTAM will soon provide a powerful communication platform as a complete OSI (Open Systems Interconnection) application protocol useful in telematic services as well as many other applications. The authors describe the current activity on the DTAM standard in the CCITT, and discuss its applications and relationship with other communication environments. It is noted that DTAM has specified the basic functions of document bulk transfer for telematic applications and will soon provide further functions for document manipulation based on the end-to-end communication model cooperating with CCITT SG VII (DAF) and ISO/IEC JTC1/SC18/WG4.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114906522","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
SISAS: A server-independent service acquisition system for distributed personal communications applications 用于分布式个人通信应用的独立于服务器的服务获取系统
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397277
R. Chang, S. Mohan, R. Wolff
{"title":"SISAS: A server-independent service acquisition system for distributed personal communications applications","authors":"R. Chang, S. Mohan, R. Wolff","doi":"10.1109/ICC.1993.397277","DOIUrl":"https://doi.org/10.1109/ICC.1993.397277","url":null,"abstract":"The authors present the software architecture of the SISAS distributed system, and illustrate how the system facilitates the development of server-based distributed personal communications applications that realize the personal communications vision. The architecture can be easily mapped onto emerging and future architectures for information networking, such as Bellcore's Information Networking Architecture (INA) effort or the TINA initiative. The computation model supported by SISAS is described along with the functional components in SISAS. The interaction between the components in various service acquisition phases is discussed, and a distributed personal messaging application developed in SISAS is presented.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115107316","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
All-serial coding architecture for ultrafast optical code-division multiple-access 超快光码分多址全串行编码体系结构
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397325
W. Kwong, P. Prucnal
{"title":"All-serial coding architecture for ultrafast optical code-division multiple-access","authors":"W. Kwong, P. Prucnal","doi":"10.1109/ICC.1993.397325","DOIUrl":"https://doi.org/10.1109/ICC.1993.397325","url":null,"abstract":"An all-serial coding architecture for ultrafast optical CDMA (code-division multiple-access), particularly suitable for waveguide and free-space operations, is studied. Performance comparison of the prime, 2/sup n/, and modified 2/sup n/ encoders/decoders in terms of normalized delay and ideal power loss reveals that the modified 2/sup n/ encoders/decoders perform the best. A 100 Mb/s optical CDMA experiment in free space using 100-fs laser pulses has been performed.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122336279","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: 12
A Gaussian characterization of correlated ATM multiplexed traffic and related queueing studies 相关ATM多路交通的高斯表征及相关排队研究
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397518
R. Addie, M. Zukerman
{"title":"A Gaussian characterization of correlated ATM multiplexed traffic and related queueing studies","authors":"R. Addie, M. Zukerman","doi":"10.1109/ICC.1993.397518","DOIUrl":"https://doi.org/10.1109/ICC.1993.397518","url":null,"abstract":"Results on performance statistics of a single server queue fed by a traffic stream which is modeled by a discrete time Gaussian process are presented. Because such a process can capture the full range of second-order statistics and is closed under superposition, it is a good model for correlated asynchronous transfer mode (ATM) statistical multiplexed traffic. The results include simple formulae for cell loss which can be applied to connection admission control for broadband integrated services digital networks (B-ISDNs).<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"200 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122355391","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: 16
Rotationally invariant multilevel codes 旋转不变多电平码
Proceedings of ICC '93 - IEEE International Conference on Communications Pub Date : 1993-05-23 DOI: 10.1109/ICC.1993.397521
J. Livingston, Chien-Cheng Tung, A. Kulandaivelu
{"title":"Rotationally invariant multilevel codes","authors":"J. Livingston, Chien-Cheng Tung, A. Kulandaivelu","doi":"10.1109/ICC.1993.397521","DOIUrl":"https://doi.org/10.1109/ICC.1993.397521","url":null,"abstract":"A method for designing multilevel codes that are rotationally invariant is described. It is shown that these codes can be linear. It is demonstrated that suboptimal decoding can be used with these codes. The complexity of these codes provides a good performance/cost tradeoff.<<ETX>>","PeriodicalId":169378,"journal":{"name":"Proceedings of ICC '93 - IEEE International Conference on Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122355552","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
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