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Proceedings of ICCS '94最新文献

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MFSK demodulation using parallel IIR ALE with a time-varying step size factor 使用具有时变步长因子的并行IIR ALE进行MFSK解调
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474149
M. T. Kilani, J. Chicharo
{"title":"MFSK demodulation using parallel IIR ALE with a time-varying step size factor","authors":"M. T. Kilani, J. Chicharo","doi":"10.1109/ICCS.1994.474149","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474149","url":null,"abstract":"Infinite impulse response (IIR) adaptive line enhancers (ALEs) are employed for the task of detecting M-ary frequency shift keying (MFSK) signals. First, a new gradient search technique using a time-varying step size factor is presented which provides faster convergence rate when compared with conventional approaches. Secondly, a new parallel ALE (PALE) structure is proposed for the detection of a set or comb of frequencies which is used in frequency comb multiple access (FCMA) scheme. In FCMA, for efficient use of bandwidth, the information is carried within the phase, amplitude and frequency of each sinusoid. The proposed solution provides faster acquisition time when compared with the fast Fourier transform (FFT) method in situations where the mutual common factor of the input frequencies is small.<<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":"134129208","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
Performance model of bandwidth allocation strategies for multimedia FDDI networks 多媒体FDDI网络带宽分配策略的性能模型
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474203
J. M. Ng, T. Y. Liang, E. Chan, C.F. Au
{"title":"Performance model of bandwidth allocation strategies for multimedia FDDI networks","authors":"J. M. Ng, T. Y. Liang, E. Chan, C.F. Au","doi":"10.1109/ICCS.1994.474203","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474203","url":null,"abstract":"With rapid development in multimedia communications, the problem of handling traffic with different quality of service requirements has become a crucial one, particularly in the area of internets. In this paper, the case of a bridged FDDI network carrying multimedia traffic is studied in detail. In particular, various channel access mechanisms are proposed for the bridge, and the performance of inter- and intra-network traffic investigated. It is found that simply increasing the priority of the bridge is not effective. However, reserving part of the the synchronous bandwidth of FDDI for delay sensitive inter-network traffic results in acceptable packet loss and delay for both intra- and inter-network traffic, and it may be possible to further optimize the scheme by adapting the allocation of synchronous bandwidth according to traffic conditions.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"111 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1994-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133170854","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 wavelet packet approach to radio signal modulation classification 无线电信号调制分类的小波包方法
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474076
N. Ta
{"title":"A wavelet packet approach to radio signal modulation classification","authors":"N. Ta","doi":"10.1109/ICCS.1994.474076","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474076","url":null,"abstract":"Time-frequency transforms, including wavelet and wavelet packet transforms, have been used in extensively in signal processing and particularly in transient signal analysis. A novel application of wavelet packet transform is proposed to perform automatic modulation classification of radio signals. Simulation results show that the performance of the proposed wavelet packet based modulation classifier is comparable with other existing signal classifiers.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"7 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":"133856180","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
QoS control in ATM networks: a VP-shaper that regenerates quasi CBR-VCs ATM网络中的QoS控制:一种再生准cbr - vc的vp -shape
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474166
F. Pitcho, N. Yamanaka
{"title":"QoS control in ATM networks: a VP-shaper that regenerates quasi CBR-VCs","authors":"F. Pitcho, N. Yamanaka","doi":"10.1109/ICCS.1994.474166","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474166","url":null,"abstract":"This paper presents a VP-shaper for ATM networks that also converts jittered CBR traffic on the VCs into near CBR traffic. In contrast with conventional VP-shapers, the proposed shaper controls clumping of cells at the VC-level. Its scheduler guarantees the minimum inter-departure time of cells at both the VP and the VC levels. Furthermore, a dynamic priority scheme, where the cell with the earliest inter departure time limit has the highest priority, reduces cell-diffusion at the VC-level. In addition, two QoS levels are defined. Simulations show that compared with a conventional shaper, the delay and CDV performance are very good for high QoS level VCs, even when there is only a small number of low QoS level VCs. The proposed VP-shaper is thus particularly suitable for circuit emulation services. The low-priority VCs support the best effort service class.<<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":"115611304","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
Modelling and testing of radial divider/combiners 径向分压器/合成器的建模和测试
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474071
M. Bialkowski, V. Waris, P. Davis
{"title":"Modelling and testing of radial divider/combiners","authors":"M. Bialkowski, V. Waris, P. Davis","doi":"10.1109/ICCS.1994.474071","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474071","url":null,"abstract":"Field matching methods are used for the analysis of two types of radial waveguide power divider/combiners: one-incorporating probes, and two- including E-plane-coupled rectangular waveguides. Based on these methods, computer algorithms are developed and tested on design examples of various power dividing/combining structures.<<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":"114421986","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: 4
Evaluation of the performance of NTM function for OS versus the more critical parameters 相对于更关键的参数，NTM函数在OS中的性能评估
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474134
L. Alcuri, S. Mizio
{"title":"Evaluation of the performance of NTM function for OS versus the more critical parameters","authors":"L. Alcuri, S. Mizio","doi":"10.1109/ICCS.1994.474134","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474134","url":null,"abstract":"Among all of the telecommunication management network (TMN) implementable functions the most critical is the network traffic management (NTM), because the data processed by this function soon looses its semantic value. Furthermore the constraints on this function become heavier and heavier. The TMN structure is based on an organized architecture with various types of operation systems (OSs). The goal of this paper is to evaluate the performance of NTM functions implemented in a basic OS. The system topology under study is made up by a variable number of network elements (NE) linked to a basic OS that is connected to a higher level OS where we have assumed all the management functions. We show the behaviour of more important performance parameters versus the number of NE obtained with a simulation model of the basic OS.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"123 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":"114581364","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
Analysis and optimization of speech coder algorithm for CDMA digital cellular CDMA数字蜂窝语音编码器算法分析与优化
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474281
Jh Hyun Park, Young Min Kim
{"title":"Analysis and optimization of speech coder algorithm for CDMA digital cellular","authors":"Jh Hyun Park, Young Min Kim","doi":"10.1109/ICCS.1994.474281","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474281","url":null,"abstract":"CELP coding is a powerful technique for the realization of high-quality speech coders operating at variable bit rates. The paper describes an implementation of a QCELP coder algorithm for CDMA. In addition, a hardware implementation for improving the speech coding rate of QCELP speech coders is explored. The coder can operate at different bit rates by simply comparing the energy in the frame with the threshold which is based upon an estimate of the background noise level. This research is based upon the design of DSP chips and ASICs for dedicated digital mobile communication applications.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"58 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":"117058617","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
A TE/sub 011+/spl delta// mode sapphire resonator probe for accurate characterization of microwave surface resistance of HTS thin films TE/sub 011+/spl δ //模式蓝宝石谐振探头，用于精确表征高温超导薄膜的微波表面电阻
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474261
Jian Lu, X. Ren, Qishao Zhang
{"title":"A TE/sub 011+/spl delta// mode sapphire resonator probe for accurate characterization of microwave surface resistance of HTS thin films","authors":"Jian Lu, X. Ren, Qishao Zhang","doi":"10.1109/ICCS.1994.474261","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474261","url":null,"abstract":"A special TE/sub 011+/spl delta// mode sapphire resonator and an equivalent perfect conductor calibration technique were developed to measure the surface resistance Rs of a single piece of HTS thin film non-destructively at 10 GHz and 77 K. The resonator is formed by a permanent probe and a replaceable test sample. The probe has Q-factor greater than 280000-good sample load repeatability and sensitivity about 20 /spl mu//spl Omega/ for HTS samples under test with dimension equal to or greater than /spl phi/28 mm. The calibration employs a symmetric configuration which presents an equivalent Rs of zero ohm and ensures the accuracy of the measurement. The measured Rs data of YBCO thin films made by laser ablation and magnetic sputtering are less than 250 /spl mu//spl Omega/.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"57 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":"115922684","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 new generalized mechanism of secure internetworked information service creation for future personal communication networks .II 面向未来个人通信网络的安全互联信息服务创建新通用机制[j]
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474190
G. Kuo, Jing-Pei Lin
{"title":"A new generalized mechanism of secure internetworked information service creation for future personal communication networks .II","authors":"G. Kuo, Jing-Pei Lin","doi":"10.1109/ICCS.1994.474190","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474190","url":null,"abstract":"For pt. I see Proceedings of the First International Workshop on Community Networking, San Francisco, California, USA, July 13-14, 1994. The main purpose of this paper is to finish the construction of a new generalized mechanism of secure internetworked information service creation on future BISDN and wireless network-based PCN, to analyze the protocols of our mechanism, and to prove their correctness. The mechanism can be considered as a general approach for creating many different kinds of information services for PCS. In addition, this new generalized mechanism associated with the information management system on the user-side end system proposed by Kuo (see NAB HDTV World Conference Proceedings, Las Vegas, Nevada, Apr. 15-18, 1991, and Apr. 13-16, 1992) as a whole can provide secure PCS universally.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"261 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":"115595206","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
Integration of upper layers of computers and telephony switches for IN
Proceedings of ICCS '94 Pub Date : 1994-11-14 DOI: 10.1109/ICCS.1994.474260
H. El-Gendy, R. Probert
{"title":"Integration of upper layers of computers and telephony switches for IN","authors":"H. El-Gendy, R. Probert","doi":"10.1109/ICCS.1994.474260","DOIUrl":"https://doi.org/10.1109/ICCS.1994.474260","url":null,"abstract":"We present an architecture of CSTA, an OSI-application layer protocol that links the telecommunications and data processing environments to support a variety of applications. It allows flexible creation of new telecommunications services and applications. It allows computer users and applications to invoke telecommunications services on the switch.<<ETX>>","PeriodicalId":158681,"journal":{"name":"Proceedings of ICCS '94","volume":"380 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":"123345471","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
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