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

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Design concept of STM-based high speed digital FTTH system 基于stm的高速数字FTTH系统设计理念
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368942
S. Aoyagi, E. Maekawa, K. Kikuchi
{"title":"Design concept of STM-based high speed digital FTTH system","authors":"S. Aoyagi, E. Maekawa, K. Kikuchi","doi":"10.1109/ICC.1994.368942","DOIUrl":"https://doi.org/10.1109/ICC.1994.368942","url":null,"abstract":"This paper describes design concept of an STM-based high speed digital FTTH system that can provide not only high speed digital end-to-end service, but also digital video services such as distribution video and video-on-demand services. The configuration and protocol of the video service control are also discussed. The node functions needed for video services are discussed considering system introduction when the density of video-on-demand customers is low. A prototype system offering bi-directional STM-1 transmission is also described.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"49 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":"116747860","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
Retransmission control in mobile radio slotted Aloha 移动无线电槽Aloha中的重传控制
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368894
Michele Zorzi, Ramesh R. Rao
{"title":"Retransmission control in mobile radio slotted Aloha","authors":"Michele Zorzi, Ramesh R. Rao","doi":"10.1109/ICC.1994.368894","DOIUrl":"https://doi.org/10.1109/ICC.1994.368894","url":null,"abstract":"For the slotted Aloha protocol in a mobile radio environment, a retransmission control scheme is proposed, and a rigorous analysis is developed to prove the stability of the resulting system. This analysis is shown to apply to virtually any model for the spatial distribution of the users. It is also shown that the use of retransmission control is unavoidable if the network performance predicted in the recent literature is to be achieved.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"49 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":"121652137","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
A state-space reduction method for computing the cell loss probability in ATM networks 一种计算ATM网络中小区丢失概率的状态空间约简方法
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368824
Jun Yei, T. Yang
{"title":"A state-space reduction method for computing the cell loss probability in ATM networks","authors":"Jun Yei, T. Yang","doi":"10.1109/ICC.1994.368824","DOIUrl":"https://doi.org/10.1109/ICC.1994.368824","url":null,"abstract":"Cell loss performance analysis in ATM networks has been considered as one of the most important issues in congestion control which is vital to the success of the ATM technique. In recent years, numerous approaches have been proposed for the computation of the cell loss probability in ATM networks. Among them are the stochastic fluid-flow (SFF) method and the Markov modulated deterministic process (MMDP) approach. The MMDP approach is basically a discrete version of the SFF method and it is numerical stable. Both approaches, however, require a considerable amount of computation time for problems of practical size. In this paper, we propose a state-space reduction method for both approaches. The idea is to find an appropriate tradeoff between the efficiency and accuracy. As a result, the proposed approach performs very well in terms of both accuracy and efficiency. For cases of practical interest (in which cell loss probabilities ranges from 10/sup -6/ to 10/sup -10/) its computation time is only a fraction of one CPU second.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"52 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":"123820488","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 nonlinear filtering approach to carrier tracking and symbol detection in digital phase modulation 一种用于数字相位调制中载波跟踪和符号检测的非线性滤波方法
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368986
J. Leitão, F. Nunes
{"title":"A nonlinear filtering approach to carrier tracking and symbol detection in digital phase modulation","authors":"J. Leitão, F. Nunes","doi":"10.1109/ICC.1994.368986","DOIUrl":"https://doi.org/10.1109/ICC.1994.368986","url":null,"abstract":"This paper considers the application of nonlinear filtering to carrier estimation and symbol detection in additive white Gaussian noise. Digital phase information is formulated as a sequence of transients of a deterministic dynamical system whose state is randomly initialized at the beginning of each symbol interval, according to an encoding scheme. Random carrier phase is modeled as the first component of a vector Markov process. Symbol-by-symbol detection and phase tracking within symbol intervals are performed by a bank of matched stochastic nonlinear phase estimators. The receiver is a parallel open-loop structure suited to all-digital modems.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"14 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":"123841667","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: 8
An automated system for RFI analysis for deployment of ASDL-I 用于部署ASDL-I的RFI分析自动化系统
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368980
M. Hoque
{"title":"An automated system for RFI analysis for deployment of ASDL-I","authors":"M. Hoque","doi":"10.1109/ICC.1994.368980","DOIUrl":"https://doi.org/10.1109/ICC.1994.368980","url":null,"abstract":"This paper describes an automated system to perform radio frequency interference (RFI) analysis for the deployment of a broadband telecommunication services, ADSL-I. The system include engineering programs and a database of all the licensed transmitters in the US., within the 100-kHz to 500-kHz frequency range. Interfering signal levels at any specified location are first calculated. Analysis is then performed to predict the coupled voltage at the network interface of the customer premises. The total noise spectrum (from this voltage) is calculated and compared with the maximum tolerable noise for reliable performance. Areas where the noise spectrum exceeds the threshold value are defined as critical areas and indicated as shaded regions on a map. In future, the system will be upgraded to analyze RFI study at higher frequency ranges for ADSL-III and other broadband services and will include more capabilities for drawing field contours at frequencies of interest.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"177 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":"122592495","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
Studies on optical digital cross-connect systems for very-high-speed optical communications networks 超高速光通信网络中光数字交叉连接系统的研究
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368939
T. Matsumoto, M. Jinno, K. Kimura, K. Noguchi
{"title":"Studies on optical digital cross-connect systems for very-high-speed optical communications networks","authors":"T. Matsumoto, M. Jinno, K. Kimura, K. Noguchi","doi":"10.1109/ICC.1994.368939","DOIUrl":"https://doi.org/10.1109/ICC.1994.368939","url":null,"abstract":"Optical time- and wavelength-domain paths in future very-high-speed optical communications networks are discussed taking into account trends in current optical transmission and optical signal processing technologies. It is important to investigate optical STM cross-connect systems for time-domain paths in the earlier research phase to ensure the deployment of optical cross-connect technology. The configuration of an optical cross-connect system and the issues that need to be investigated are presented. We also report, for the first time, a preliminary experiment of an optical STM cross-connect system, using 20 Gbit/s optical signals.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"6 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":"122819588","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: 8
Artificial neural networks for modeling and simulation of communication systems with nonlinear devices 具有非线性装置的通信系统建模与仿真的人工神经网络
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368818
’. MichaelDevetsikiotis, J., Keith Townsend, Mark W. White
{"title":"Artificial neural networks for modeling and simulation of communication systems with nonlinear devices","authors":"’. MichaelDevetsikiotis, J., Keith Townsend, Mark W. White","doi":"10.1109/ICC.1994.368818","DOIUrl":"https://doi.org/10.1109/ICC.1994.368818","url":null,"abstract":"Nonlinear devices and subsystems present formidable challenges in the analysis of communication systems, and a major motivation for using the simulation approach. Typically nonlinear subsystems are originally described in terms of nonlinear differential equations (NLDE). Directly implementing the numerical solution of the NLDE into simulation block models can be computationally intensive as well as numerically unstable. We present here a simulation methodology that uses artificial neural networks (ANN) to build and efficiently simulate block models of nonlinear devices and subsystems within larger communication system models. We illustrate the usefulness of this approach and the validity of our analysis by showing significant run time savings in the simulation of an optical time-division multiple-access (OTDMA) architecture that involves a two input optoelectronic \"AND\" device.<<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":"131144526","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
Approximate analysis of a packet switch with finite output buffering and imbalanced correlated traffic 具有有限输出缓冲和不平衡相关流量的分组交换机的近似分析
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368950
I.I. Makhamreh, D. McDonald, N. Georganas
{"title":"Approximate analysis of a packet switch with finite output buffering and imbalanced correlated traffic","authors":"I.I. Makhamreh, D. McDonald, N. Georganas","doi":"10.1109/ICC.1994.368950","DOIUrl":"https://doi.org/10.1109/ICC.1994.368950","url":null,"abstract":"We apply an aggregation method to analyze an output-buffered ATM access switch with correlated imbalanced traffic. Each input port of the switch is assumed to be driven by an interrupted Bernoulli process and every cell in a burst is directed to the same output port. The mean throughput, delay, cell loss probability and transient time until blocking are calculated numerically for a switch driven by an equivalent aggregated source. The approximation to the original system is shown to be excellent by comparing with the numerical solution of small switches and by simulation.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"63 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":"131433979","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: 8
A functional description of the buffered telemetry demodulator for the Galileo mission to Jupiter 伽利略号木星任务的缓冲遥测解调器的功能描述
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368963
H. Tsou, B. Shah, R. Lee, S. Hinedi
{"title":"A functional description of the buffered telemetry demodulator for the Galileo mission to Jupiter","authors":"H. Tsou, B. Shah, R. Lee, S. Hinedi","doi":"10.1109/ICC.1994.368963","DOIUrl":"https://doi.org/10.1109/ICC.1994.368963","url":null,"abstract":"The paper functionally describes a novel buffered telemetry demodulator (BTD) for the Galileo spacecraft's upcoming encounter with Jupiter. Due to an inoperative high gain antenna the Galileo signal is characterized by low data rates and an extremely weak space-to-ground communication link. The extremely weak downlink is expected to result in an unusually long acquisition time and frequent cycle slips. In this case, the BTD is most useful as it operates on recorded (or buffered) digital samples to extract symbols from the received signal. The key features of the BTD are (1) its ability to reprocess the signal to reduce acquisition time and enable resynchronization, (2) its ability to use future information about the signal and perform smoothing in the past to recover symbols lost during acquisition and resynchronization, (3) its minimized recording bandwidth as each harmonic of a square-wave subcarrier is recorded individually, and (4) its parallel architecture that enables a multi-processor implementation. The paper discusses baseband recording and demodulation schemes, as well as, the computational speed required to implement the BTD in software. Several general purpose computers that can be used for implementation are identified.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"210 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":"131477034","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
A study of the accuracy of the Bernoulli approximation of the slot occupancy process in high-speed unidirectional-bus networks 高速单向总线网络中槽占用过程的伯努利近似精度研究
Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications Pub Date : 1994-05-01 DOI: 10.1109/ICC.1994.368953
G. J. Miller, M. Paterakis
{"title":"A study of the accuracy of the Bernoulli approximation of the slot occupancy process in high-speed unidirectional-bus networks","authors":"G. J. Miller, M. Paterakis","doi":"10.1109/ICC.1994.368953","DOIUrl":"https://doi.org/10.1109/ICC.1994.368953","url":null,"abstract":"Analytical models for unidirectional-bus protocols often employ a Bernoulli process to approximate the occupancy process of the slots on the bus. This approximation, which assumes independence among the statuses of consecutive slots on the bus facilitates analysis; however, it is known to provide inaccurate results, especially for stations located at the downstream end of the bus. In this paper, we quantify this inaccuracy by comparing results from the Bernoulli-based analytical model with results from a simulation model of two different access protocols. We study the Bernoulli-based model as compared to simulation in its ability both to predict network delay behavior and to describe the actual slot occupancy process as characterized by various statistical characteristics. We reveal the inaccuracy of the model as a function of station index and network load, and we identify a characteristic of the slot occupancy pattern not captured by the Bernoulli-based model, that is crucial to more accurately modeling the process for the sake of delay analysis.<<ETX>>","PeriodicalId":112111,"journal":{"name":"Proceedings of ICC/SUPERCOMM'94 - 1994 International Conference on Communications","volume":"19 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":"121764041","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
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