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Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications最新文献

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SONET bidirectional ring capacity analysis: a pragmatic view SONET双向环容量分析:实用主义观点
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368856
B. Smith, C. Yackle
{"title":"SONET bidirectional ring capacity analysis: a pragmatic view","authors":"B. Smith, C. Yackle","doi":"10.1109/ICC.1994.368856","DOIUrl":"https://doi.org/10.1109/ICC.1994.368856","url":null,"abstract":"This paper presents the results of a theoretical analysis of SONET bidirectional rings. It provides significant insight into ring planning by studying the impact of the number of nodes on a ring, realizable assignments, and ring interconnection. A new concept of realizable assignments is developed and studied. Realizable assignments provide a pragmatic method of determining the assignment capacity of the Bidirectional Line Switched Rings. The ring interconnection analysis studies the impact of inter-ring vs. intra-ring demand, drop and continue, and DS1 grooming at ring interconnect nodes on the economic prove-in of rings.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116913691","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
An integrated application/service platform to support multimedia applications 集成的应用/服务平台，支持多媒体应用
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368739
G. Orphanos, D. Kanellopoulos, S. Koubias, G. Papadopoulos
{"title":"An integrated application/service platform to support multimedia applications","authors":"G. Orphanos, D. Kanellopoulos, S. Koubias, G. Papadopoulos","doi":"10.1109/ICC.1994.368739","DOIUrl":"https://doi.org/10.1109/ICC.1994.368739","url":null,"abstract":"This paper describes a communication support system for multimedia applications relying on the development of an integrated application/service platform. The proposed architecture includes a service platform that provides communication services and their management to multimedia applications and an application platform that provides end-point application services. The former is implemented via an interface re siding at OSI Presentation Service Access Point (PSAP) and the latter via an interface residing at OSI Application Service Access Point (ASAP). It is anticipated that the combination of the proposed integrated application/service platform will ensure the interoperability among existing and future multimedia applications within the broadband environment. It is widely accepted that the key requirement for a multimedia application is the availability of a distributed multimedia environment. Multimedia applications could be distinguished as interactive or non-interactive such as conferencing and video-on-demand, respectively, and impose specific requirements to be met, i.e. synchronization of isochronous streams, end-to-end delay constraints and multicast transmissions. In this paper we propose an enhanced protocol/service structure that overcomes the weaknesses of the conventional OSI Reference Model. The result of this approach is an application/service platform that provides a QoS support throughout all OSI upper layers. Finally, adaptations of OSI elements are proposed.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123592936","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: 5
Two timing recovery algorithms for MSK MSK的两种定时恢复算法
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368921
U. Lambrette, H. Meyr
{"title":"Two timing recovery algorithms for MSK","authors":"U. Lambrette, H. Meyr","doi":"10.1109/ICC.1994.368921","DOIUrl":"https://doi.org/10.1109/ICC.1994.368921","url":null,"abstract":"Suggests two algorithms that allow efficient timing recovery for MSK based on the computation of the Fourier spectrum of the absolute value of the differential phases. One is suited for parallel frequency estimation while the second is less complex but requires previous frequency correction. The algorithms are investigated using both analysis and simulation. The two algorithms approximately lead to the same results as known from linear modulation techniques. Using a differential detection MSK receiver, an optimal preamble of length 16 is sufficient for achieving SNR losses below 0.5 dB at 12 dB, when interpolating the differential phase sequence to 8/T.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116847013","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: 31
Nonlinear equalization for data storage channels 数据存储通道的非线性均衡
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.369050
S. K. Nair, J. Moon
{"title":"Nonlinear equalization for data storage channels","authors":"S. K. Nair, J. Moon","doi":"10.1109/ICC.1994.369050","DOIUrl":"https://doi.org/10.1109/ICC.1994.369050","url":null,"abstract":"Nonadditive and non-Gaussian noises and nonlinear signal distortions are significant sources of error in high density digital magnetic recording. Transition noise, transition broadening and partial erasure are a few such impediments. We propose a multilayer perceptron (MLP) based nonlinear equalizer to counter such distortions. It is shown that for realistic channel models the performance of such a nonlinear equalizer is superior to that of the conventional linear partial response equalizer, when used with a Viterbi detector.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123964330","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: 10
LFSE interference cancellation in CDMA systems CDMA系统中LFSE干扰消除
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368920
Pantelis Monogioudis, R. Tapazolli, B. Evans
{"title":"LFSE interference cancellation in CDMA systems","authors":"Pantelis Monogioudis, R. Tapazolli, B. Evans","doi":"10.1109/ICC.1994.368920","DOIUrl":"https://doi.org/10.1109/ICC.1994.368920","url":null,"abstract":"A method based on linear fractional spaced equalization (LFSE) for adaptively cancelling the multiple access interference in CDMA systems is addressed. The simulation results indicate that the LFSE offers significant gains over the conventional detector eliminating the near-far problem without the explicit knowledge of the interfering spreading sequences. Furthermore, it is demonstrated that LFSE performs despreading and multipath (RAKE) combining with no extra complexity.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124007733","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
Methods for synchronizing (d,k)-constrained sequences 同步(d,k)约束序列的方法
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368725
M. Blaum, J. Bruck, C.M. Malas, H. van Tilborg
{"title":"Methods for synchronizing (d,k)-constrained sequences","authors":"M. Blaum, J. Bruck, C.M. Malas, H. van Tilborg","doi":"10.1109/ICC.1994.368725","DOIUrl":"https://doi.org/10.1109/ICC.1994.368725","url":null,"abstract":"Given a (1,7) code, a loss of synchronization may occur by insertion or deletion of a 0 or a 1. That event is catastrophic, i.e., it will cause an unlimited number of errors in the data since the moment of the loss of synchronization. We introduce two methods for recovering against insertions or deletions of symbols. The first one allows for identification of up to 3 insertions and/or deletions in a given block, permitting quick synch recovery. This method is based on variable length codes. The second method is of block type, and allows for detection of large numbers of insertions and deletions. Both methods can be extended to general (d,k) constrained codes.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125039318","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
Variable length RLL codes for high-density optical recording 用于高密度光记录的可变长度RLL码
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368722
Y. Shimpuku, H. Ino, Y. Chaki, T. Nakagawa
{"title":"Variable length RLL codes for high-density optical recording","authors":"Y. Shimpuku, H. Ino, Y. Chaki, T. Nakagawa","doi":"10.1109/ICC.1994.368722","DOIUrl":"https://doi.org/10.1109/ICC.1994.368722","url":null,"abstract":"The channel coding methods with the parameters of (4,k;2,5;r) have a large minimum separation between transitions (Tmin) and have extra codes for suppressing digital sum value (DSV) of coding digits. A stable detector is realized by applying suitable equalization for optical recording characteristics. By use of this coding method, a low error-rate detection is achieved on high density optical disks.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128462251","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
Recursive Bayesian techniques for blind equalization 盲均衡的递归贝叶斯技术
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368846
Gen-Kwo Lee, S. Gelfand, M. Fitz
{"title":"Recursive Bayesian techniques for blind equalization","authors":"Gen-Kwo Lee, S. Gelfand, M. Fitz","doi":"10.1109/ICC.1994.368846","DOIUrl":"https://doi.org/10.1109/ICC.1994.368846","url":null,"abstract":"The paper introduces extended Bayesian filters (EBFs), a new family of blind deconvolution filters for digital communications. The EBF performs nonlinear estimation of the channel and data simultaneously, and achieves suboptimal symbol-by-symbol demodulation in unknown channels. The complexity of the EBF is exponential in a parameter that is typically chosen to be less than the channel length and the filter lag. This key characteristic makes the EBF practical for both long channels and large constellations. Simulations characterizing the performance of EBFs in severe intersymbol interference are performed and demonstrate the fast convergence and robust equalization of the EBFs for linearly modulated signals on unknown channels. Also, a principled adaptive complexity reduction algorithm called the reduced-state EBF (RSEBF) is developed and applied to 16-QAM signals.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128503747","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
Building a platform support environment for TMN applications 构建TMN应用的平台支持环境
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368718
J. Celestino, J. Claude
{"title":"Building a platform support environment for TMN applications","authors":"J. Celestino, J. Claude","doi":"10.1109/ICC.1994.368718","DOIUrl":"https://doi.org/10.1109/ICC.1994.368718","url":null,"abstract":"The paper describes a platform support environment layer proposed by the TMN Computing Platform Special Interest Group (RACE programme) whose main objective is to provide enough support for the contrasting TMN management applications. The paper also discusses the IDEA project proposed by the PRISM Laboratory. It has developed a platform support environment for network management systems. To finish, the authors show the IDEA platform support environment and its relationship with this general TMN computing platform architecture. The important services supported by both the implementation developed by the IDEA project and the CPSIG architecture are identified and discussed.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127081202","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
End-to-end performance in ATM networks ATM网络的端到端性能
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368951
Jing-Fei Ren, J. Mark, J. W. Wong
{"title":"End-to-end performance in ATM networks","authors":"Jing-Fei Ren, J. Mark, J. W. Wong","doi":"10.1109/ICC.1994.368951","DOIUrl":"https://doi.org/10.1109/ICC.1994.368951","url":null,"abstract":"We are concerned with the end-to-end performance of an ATM network. The focus is on the characterization of the smoothing effect on the individual traffic streams as they traverse the network nodes. We develop an analytical model and a method of analysis for a generic node. For Markov modulated on-off streams, it is found that the on period gets lengthened as the stream passes through each node. The characterization of the lengthening effect allows a departure stream to be approximated by another Markov modulated on-off stream with modified parameters. The method permits a recursive computation of performance at all the nodes in a tandem network representing an end-to-end connection. The accuracy of the approximate analysis is validated by comparing it with simulation results.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127372970","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: 24
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