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Proceedings of ICCS '94最新文献

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Adaptive channel equalization using counter propagation networks 使用反传播网络的自适应信道均衡
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474088
J.C. Pastra, R. Pal
{"title":"Adaptive channel equalization using counter propagation networks","authors":"J.C. Pastra, R. Pal","doi":"10.1109/ICCS.1994.474088","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474088","url":null,"abstract":"Effective channel equalization in a digital communication system is essential for error free data transmission over dispersive channels. Conventional adaptive equalization uses the linear LMS algorithm for this purpose. However, the performance of this equalizer degrades severely when the channel is nonlinear in nature; which is true in most of the practical situations. The equalizer performance can be improved by the use of nonlinear processing in an artificial neural network. We propose a counter propagation network (CPN) based adaptive channel equalizer for the task of channel equalization. It has been shown by extensive computer simulation that this equalizer performs much better than a LMS based equalizer. Over a wide range of SNR and eigenvalue ratio (EVR), the CPN based equalizer outperforms the LMS equalizer in terms of MSE for channels possessing linear as well as nonlinear characteristics.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"97 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":"121382505","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
Towards self organising telecommunications networks 走向自组织电信网络
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474138
I. Hawker, C. P. Botham, R. Chng, D. Johnson
{"title":"Towards self organising telecommunications networks","authors":"I. Hawker, C. P. Botham, R. Chng, D. Johnson","doi":"10.1109/ICCS.1994.474138","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474138","url":null,"abstract":"Telecommunications networks are becoming increasingly automated in order to improve customer perceived quality of service/reliability and to provide integrated management of the growing number of transport and switching technologies. As the network complexity increases centralised control becomes less attractive, tending to increase response times to network events, reduce overall resilience and encourage a top level approach to development of network management applications. This results in a massive build up of software complexity. We discuss how distributed network control using embedded algorithms can overcome these problems leading towards the concept of a self organising telecommunications network.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"15 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":"121929658","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
Variable step adaptive equalizer for digital mobile radio 数字移动对讲机的可变步长自适应均衡器
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474094
Goh Chui Chui, A. Sha'ameri, I. Isamil
{"title":"Variable step adaptive equalizer for digital mobile radio","authors":"Goh Chui Chui, A. Sha'ameri, I. Isamil","doi":"10.1109/ICCS.1994.474094","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474094","url":null,"abstract":"In a digital mobile radio system, an adaptive equalizer is introduced at the receiver to remove the effect of intersymbol interference. The digital mobile radio signal system requires a fast converging adaptive equalizer algorithm. The well-known conventional LMS algorithm has proven to be incapable of handling such environment. Thus, this has led into studies on other faster and more complex algorithms such as RLS and Kalman algorithm. Another alternative to these algorithms is analyzed namely the variable step LMS (VSLMS) algorithm. The performance of the VSLMS algorithm, which is based on the LMS algorithm with variable step size, is studied under a digital mobile environment. Simulation results are also presented to prove the superiority of the performance of the VSLMS algorithm compared to the LMS algorithm.<<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":"115878824","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 novel adaptive traffic load shedding scheme for CDMA cellular mobile systems 一种新的CDMA蜂窝移动系统自适应业务减载方案
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474189
X. Chen, K.L. Lee
{"title":"A novel adaptive traffic load shedding scheme for CDMA cellular mobile systems","authors":"X. Chen, K.L. Lee","doi":"10.1109/ICCS.1994.474189","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474189","url":null,"abstract":"An adaptive traffic load shedding scheme for (direct sequence) CDMA mobile cellular system is discussed and its effectiveness in improving the system capacity is studied. Computer simulation is used to evaluate the capacity increase in a CDMA cellular system after using the scheme. Two interesting scenarios are considered: one fully loaded cell with lightly load first tier surrounding cells, and three consecutive fully load cells with lightly load the rest of first tier surrounding cells.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"501 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":"129969366","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: 14
A method for array calibration in parametric sensor array processing 参数传感器阵列处理中的一种阵列标定方法
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474271
C. See
{"title":"A method for array calibration in parametric sensor array processing","authors":"C. See","doi":"10.1109/ICCS.1994.474271","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474271","url":null,"abstract":"We present a method for calibrating the perturbations in the array manifold that resulted from the combined effects of mutual coupling, sensor gain and phase mismatch and sensor positioning error. The array calibration method proposed estimates the sensor positions and calibration matrix from a set of measured steering vectors. The calibration matrix is an array parameter that describes the combined effects of mutual coupling and sensor gain and phase-mismatch. The usefulness and behaviour of the proposed calibration method are illustrated through simulated experiments.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"23 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":"133398217","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: 14
Performance improvement in ATM networks using interleaved error correcting code 使用交错纠错码改进ATM网络的性能
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474056
Kwok-leung Chung, Tsz-Mei Ko
{"title":"Performance improvement in ATM networks using interleaved error correcting code","authors":"Kwok-leung Chung, Tsz-Mei Ko","doi":"10.1109/ICCS.1994.474056","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474056","url":null,"abstract":"The paper examines a new approach to reduce the cell loss probability of an ATM network using interleaved error-correcting codes. In an ATM network with bursty traffic, the occurrence of cell loss is also bursty due to an instantaneous loss of cells during buffer overflow. Interleaving can reduce the burstiness and thus the cell loss probability. Computer simulations are performed using the BONeS Designer and a simple ATM network. The arrival process of the ATM network is modelled by on-off sources and Markov modulated deterministic processes (MMDP). Simulation results show that the cell loss probability can be reduced by more than 50%.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"23 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":"133517773","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
A networked interoffice communication expert system 一个网络化的办公室间通信专家系统
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474283
M. Venkatasubbaiah, Harit Vishwakarma
{"title":"A networked interoffice communication expert system","authors":"M. Venkatasubbaiah, Harit Vishwakarma","doi":"10.1109/ICCS.1994.474283","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474283","url":null,"abstract":"All activities in an organization require or produce information. Therefore, a document is not only the main information carrier but also a central aid for the integration of office functions. The modern office systems manage a wide variety of documents, which may include text, images, graphics, data, or voice. Document interchange facilities play an essential role in integrating office systems and streamlining office procedures. A wide variety of systems such as electronic mail or computer based message systems are now available, achieving various levels of interoffice document communication and distributed document processing. This paper proposes an architecture for a networked interoffice communication expert (NICE) system aiming at the integration of office communication functions and varied information media. A system for the proposed architecture is being developed on Novell NetWare platform. It is an extension of our earlier software development efforts namely, electronic news and notice system, application specific electronic mail and object-oriented documents management system.<<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":"131858842","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
Design and performance evaluation of a communication protocol for an information communication processing system 信息通信处理系统通信协议的设计与性能评价
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474287
Won Ryu, Jaehun You, Dong-Won Kim, Tae-joon Kim, B. Yoon
{"title":"Design and performance evaluation of a communication protocol for an information communication processing system","authors":"Won Ryu, Jaehun You, Dong-Won Kim, Tae-joon Kim, B. Yoon","doi":"10.1109/ICCS.1994.474287","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474287","url":null,"abstract":"The problem of how to manage communication networks and network construction systems that are diverse and complex is discussed. The authors consider the necessity of network management systems which can supply information users with enhanced information services as well as monitoring and controlling network resources. The International Standard Organization (ISO) and ITU-T have been actively executing special studies on the structure of network management systems and the standardization of network management protocols. The authors design and implement a communication protocol that can effectively, remotely, and intensively manage various systems that are distributed locally.<<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":"124084509","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
Throughput and delay characteristics of ARQ transport protocols over LEO and GEO satellite networks LEO和GEO卫星网络上ARQ传输协议的吞吐量和延迟特性
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474220
M. Talla, A. Elhakeem, M. Kadoch
{"title":"Throughput and delay characteristics of ARQ transport protocols over LEO and GEO satellite networks","authors":"M. Talla, A. Elhakeem, M. Kadoch","doi":"10.1109/ICCS.1994.474220","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474220","url":null,"abstract":"We first extend the performance analysis of existing point-to-point automatic repeat Request (ARQ) protocols to M-node end-to-end users. The M-node end-to-end users are considered as one virtual circuit (VC) to derive the throughput and delay characteristics using the Norton equivalent queuing model. The analysis is applied to ARQ transport protocols with geostationary orbit (GEO) and low Earth orbit (LEG) satellite communication links. The optimal end-to-end window size is identified for better throughput and low end-to-end delay for go-back-N (GBN) and selective repeat (SR) ARQ schemes at the OSI transport layer over LEO and GEO satellite links.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"17 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":"115002912","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
Computer simulation of three TCM codes over band-limited satellite fading channels 三种TCM码在带限卫星衰落信道上的计算机模拟
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474142
K. Yong, V. Dubey, E. Gunawan
{"title":"Computer simulation of three TCM codes over band-limited satellite fading channels","authors":"K. Yong, V. Dubey, E. Gunawan","doi":"10.1109/ICCS.1994.474142","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474142","url":null,"abstract":"A computer simulation program is developed to evaluate the performance of TCM codes over a mobile satellite channel. The effects of band-limited filtering and channel nonlinearity are also included for practical applications. TCM codes with a non-uniform structure can also be simulated. The usefulness of this simulation program is demonstrated by comparing the performance of 3 TCM codes with analytical results over a satellite fading channel.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"22 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":"125981499","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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