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Proceedings of ICCS '94最新文献

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Performance analysis of quadrature overlapping modulations over nonlinear fading channels 非线性衰落信道上正交重叠调制的性能分析
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474140
X. Chen, W.H. Ong
{"title":"Performance analysis of quadrature overlapping modulations over nonlinear fading channels","authors":"X. Chen, W.H. Ong","doi":"10.1109/ICCS.1994.474140","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474140","url":null,"abstract":"The performance of quadrature overlapping modulations over nonlinear land mobile satellite channels with fading on the downlink path is analyzed. Two quadrature overlapping modulations, QORC and PSKRT, are considered. Their performance is compared to QPSK and MSK. In the first system model, the quadrature overlapping modulations perform better than the conventional quadrature modulations due to their power efficiency. In the second model, they do not perform better than the conventional quadrature modulations mainly due to the ISI introduced by multipath fading.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128548910","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
The resource management trade-offs of data communications in ATM-based networks 基于atm的网络中数据通信的资源管理权衡
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474167
M. Mateescu, H. Augsten
{"title":"The resource management trade-offs of data communications in ATM-based networks","authors":"M. Mateescu, H. Augsten","doi":"10.1109/ICCS.1994.474167","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474167","url":null,"abstract":"The paper analyses the options available for bandwidth management in ATM-based networks carrying predominantly data traffic, develops a rationale for best-effort approaches and quantifies the trade-off associated with these approaches. Distributed computing, multimedia mail, walk through virtual reality are just a few examples of applications where the current approaches for traffic control (as foreseen by ITU-TSS) are not suitable. Traffic descriptors (other than maybe peak rates) are difficult to determine for the user. Advance reservation for the duration of a call is difficult to understand in an environment where workstations are connected continuously to a network interface and therefore approaches must be imagined which do not rely on such information.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132210595","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
Zech logarithmic decoding for two error-correcting cyclic codes-An analysis 两个纠错循环码的zh对数译码分析
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474314
K. Natesh
{"title":"Zech logarithmic decoding for two error-correcting cyclic codes-An analysis","authors":"K. Natesh","doi":"10.1109/ICCS.1994.474314","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474314","url":null,"abstract":"An analysis of the decoding scheme for binary two error correcting cyclic codes whose generator polynomials have at most two irreducible factors has been presented. This class includes binary narrow sense BCH codes with designed distance 5. The decoding algorithm uses the Zech logarithm for the finite field in which the routes of the code lie.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132231879","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
Function-based methodology to model communication protocols for performance evaluation 基于功能的通信协议建模方法，用于性能评估
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474100
A. Cohen, R. Mrabet
{"title":"Function-based methodology to model communication protocols for performance evaluation","authors":"A. Cohen, R. Mrabet","doi":"10.1109/ICCS.1994.474100","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474100","url":null,"abstract":"The paper describes a methodology based on the function concept, as defined in the OSI Reference Model, to model protocol entities in order to assess their performance while being used in a communication network. This concept provides a high degree of flexibility to model protocol entities, because it allows the modeler to combine some functions needed to build a given protocol which will provide a particular level of performance. The functions of a protocol entity are structured inside a library of functions, and are mainly related by means of the precedence relation.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134150623","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
The implementation issues of an adaptor for ATM-based LANs 基于atm的局域网适配器的实现问题
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474063
Seong-Ho Jeong, Dong Kyu Lim, Jang-Kyung Kim
{"title":"The implementation issues of an adaptor for ATM-based LANs","authors":"Seong-Ho Jeong, Dong Kyu Lim, Jang-Kyung Kim","doi":"10.1109/ICCS.1994.474063","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474063","url":null,"abstract":"ATM-based LANs can provide much greater capacity than current shared medium LANs and support multimedia traffic such as audio, video, and data. The key component for an ATM LAN is an ATM adaptor for attaching a PC or workstation to an ATM switch or hub. We have made a prototype of an adaptor for ATM LANs with a data rate of 100 Mbps (ATM Forum UNI spec. V3.0). We first analyze the basic design requirements for handling ATM communication services. Based on this analysis, we then discuss the implementation issues of an ATM adaptor for the LAN environment.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134400950","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
Algorithms for efficient bandwidth utilization on survivable telecommunication networks 生存性电信网络中有效利用带宽的算法
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474296
U.G. Joo, J.G. Kim, J. Ko
{"title":"Algorithms for efficient bandwidth utilization on survivable telecommunication networks","authors":"U.G. Joo, J.G. Kim, J. Ko","doi":"10.1109/ICCS.1994.474296","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474296","url":null,"abstract":"This paper suggests a line restoration (rerouting) algorithm based on the minimum cost path (rather than the k-shortest path) for protection possible link failures and also develops a spare capacity determination algorithm based on the k-shortest path for the restoration algorithm. The restoration algorithm can supplement telecommunication networks with dedicated facility restoration mechanisms, where some intelligent transmission devices such as broadband digital cross-connect systems (BDCSs) are involved. These algorithms, described by illustrative examples, can be utilized in a general network for efficient bandwidth utilization.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122993325","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
Dynamic frame control for TDD based wireless LAN 基于TDD的无线局域网动态帧控制
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474188
Yong Hoon Kim, Hong Yoon Kim, Kyoon-Ha Lee
{"title":"Dynamic frame control for TDD based wireless LAN","authors":"Yong Hoon Kim, Hong Yoon Kim, Kyoon-Ha Lee","doi":"10.1109/ICCS.1994.474188","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474188","url":null,"abstract":"In a wireless LAN, the radio frequency is an essential resource, but, because this radio frequency is a restricted resource that is shared worldwide, its efficient usage is required. A frame and control structure is proposed to efficiently manage the unbalanced traffic between the uplink and downlink, and the fluctuations of the stations traffic. A prototype for a wireless LAN with a transmission rate of 1.5 Mbits/sec is suggested. It allocates slots to the stations dynamically depending on the traffic, and thus, the idle slots of the idle stations are shared with the heavy traffic stations, so the throughput is increased. As a result of an analysis, it was found that a dynamic transmission speed of between 1 kbits/sec to 1.47 Mbits/sec for each station, with a transmission delay of 0.5 seconds is possible.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123863027","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
Consequences of port mismatch and finite isolation on power combining 端口失配和有限隔离对功率组合的影响
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474069
K. Eccleston
{"title":"Consequences of port mismatch and finite isolation on power combining","authors":"K. Eccleston","doi":"10.1109/ICCS.1994.474069","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474069","url":null,"abstract":"In solid-state power amplification, power combining is an important issue since the output powers from individual transistors are too small for many transmission applications. An important aspect of power combining is the combining efficiency being the ratio of the power delivered to the load to that available from the sources connected to the input. In a practical power combiner, waves incident on the input ports are scattered to all ports including the output port. The paper discusses the effects of port mismatch and finite combiner isolation on combining efficiency. For a lossless power combiner, it is shown that the efficiency may be optimised by optimising the matching at the combiner output.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124028973","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
Effects of the interfering harmonics caused by imperfect data streams on BPSK and QPSK receivers 不完全数据流对BPSK和QPSK接收机干扰谐波的影响
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474178
T.M. Nguyen, H. Yeh
{"title":"Effects of the interfering harmonics caused by imperfect data streams on BPSK and QPSK receivers","authors":"T.M. Nguyen, H. Yeh","doi":"10.1109/ICCS.1994.474178","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474178","url":null,"abstract":"The impacts of imperfect data streams on the carrier tracking and timing recovery performance of space telemetry systems are investigated. It is found that the tracking performances for both carrier tracking and bit sync depend on the amount of imbalance between +1s and -1s and data asymmetry. Additionally, the average probability of error (or bit error rate, BER) due to the presence of interfering harmonics created by the imperfect data stream is derived for both binary phase-shift-keying (BPSK) and quadri-phase-shift-keying (QPSK) receivers. The effects of imperfect data stream, imperfect data-induced carrier tracking phase error and imperfect data-induced bit timing error are considered in the evaluation of the BER.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117258879","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
Full-wave analysis of antenna radiation in a rectangular waveguide with discontinuity. I. Dyadic Green's function 不连续矩形波导中天线辐射的全波分析。1、并矢格林函数
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474210
L. Li, P. Kooi, M. Leong, T. Yeo
{"title":"Full-wave analysis of antenna radiation in a rectangular waveguide with discontinuity. I. Dyadic Green's function","authors":"L. Li, P. Kooi, M. Leong, T. Yeo","doi":"10.1109/ICCS.1994.474210","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474210","url":null,"abstract":"Presents a full-wave analysis of antenna radiation in a rectangular waveguide with discontinuity in the z direction. A basic formulation of electromagnetic fields and waves in such a waveguide is given in terms of dyadic Green's functions in different regions separated by a filled medium. The dyadic Green's functions for different regions of the waveguide due to a source located in the waveguide are constructed and their coefficients are obtained by making use of the boundary conditions. Furthermore, the fields due to a dipole in the waveguide are calculated.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114222723","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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