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The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.最新文献

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++document signature generation and insertion 文档签名的生成和插入
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359394
M. Tinauli, V. Goh, M. Siddiqi
{"title":"++document signature generation and insertion","authors":"M. Tinauli, V. Goh, M. Siddiqi","doi":"10.1109/ICCS.2004.1359394","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359394","url":null,"abstract":"Internet plays the role of a huge information repository in the modern era. It is the most rapidly growing and ever expanding media for information interchange. The easiest way to distribute articles, theses, papers and legal law documents is through the Internet or file sharing systems, but it poses copyrights violation issues. To protect these intellectual property rights, only a few techniques have been proposed. We present a content-based technique in conjunction with horizontal word shift coding to provide a two level security and a mechanism for inserting and generating unique signatures and copyrights information","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114609439","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
Reduction of peak to average power ration of OFDM signals using companding 用扩宽法降低OFDM信号的峰平均功率比
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359359
A. Vallavaraj, B. Stewart, D. K. Harrison, F. G. McIntosh
{"title":"Reduction of peak to average power ration of OFDM signals using companding","authors":"A. Vallavaraj, B. Stewart, D. K. Harrison, F. G. McIntosh","doi":"10.1109/ICCS.2004.1359359","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359359","url":null,"abstract":"In this paper, the use of companding as an effective tool for minimizing the peak-to-average power ratio (PAPR) of OFDM signals is presented. The influence of in-band and out-of band noise due to sampling and compression is considered. The bit-error-rate (BER) performance for different companding profiles is also evaluated for transmissions within an AWGN channel. The improvement on BER performance and PAPR is studied for various companding profiles and is compared with the performance due to clipping within the OFDM transmissions","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117163760","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
Scheduling in multi-cell environment using random beamforming 基于随机波束形成的多小区调度
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359364
Ming Gong, Ling Qiu, Jinkang Zhu
{"title":"Scheduling in multi-cell environment using random beamforming","authors":"Ming Gong, Ling Qiu, Jinkang Zhu","doi":"10.1109/ICCS.2004.1359364","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359364","url":null,"abstract":"High system throughput and fairness among the users seem always two contradictory aspects in multi-user system. In multi-cell environment, the intense interference from neighboring cell sharpens the contradiction. In this paper, technique of random beamforming is used not only to avoid the intense interference statistically but also alleviate the contradiction. Fairness performance is further improved with appropriate scheduling schemes without much loss of average system throughput. A sum-contentment based scheduling is provided. Comparing with some other scheduling schemes, we find that with the aid of proper scheduling, random beamforming techniques can offer remarkable compromise between throughput and fairness in multi-user system","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123173512","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
Experimental implementation of distributed management for service provisioning in an ASON/GMPLS testbed 在ASON/GMPLS试验台中分布式服务供应管理的实验实现
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359402
C. Pinart, R. Muñoz, G. Junyent
{"title":"Experimental implementation of distributed management for service provisioning in an ASON/GMPLS testbed","authors":"C. Pinart, R. Muñoz, G. Junyent","doi":"10.1109/ICCS.2004.1359402","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359402","url":null,"abstract":"This paper focuses on the interactions of the ASON management plane of an optical network both with remote soft-permanent service provisioning and an optical control plane through integrating XML, SNMP and GMPLS based communication mechanisms and distributed approaches. Experimentation results with an ASON/GMPLS testbed assess the potential suitability of the overall distributed management approach for service provisioning due to its low delays and high flexibility","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124443984","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
An improved OPAST algorithm for spatio-temporal multiuser detection technique based on subspace tracking 基于子空间跟踪的时空多用户检测改进OPAST算法
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359407
Hui Zhang, Guangliang Ren, Huining Zhang, Jin Zhang
{"title":"An improved OPAST algorithm for spatio-temporal multiuser detection technique based on subspace tracking","authors":"Hui Zhang, Guangliang Ren, Huining Zhang, Jin Zhang","doi":"10.1109/ICCS.2004.1359407","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359407","url":null,"abstract":"An improved OPAST algorithm for spatio-temporal multiuser detection technique is proposed to increase the system capacity and improve the SNR in DS-CDMA systems employing the antenna arrays. The improved OPAST algorithm called newOPAST is based on the OPAST algorithm and can be applied in the overloaded DS-CDMA systems. Simulation results show that the newOPAST algorithm has low complexity and a stable global convergence property, and its performance is close to that of the classical algorithms with high complexity in the blind spatio-temporal multiuser detection","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"518 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123113242","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
3-D closed-form Green's functions in spatial-domain in LTCC antenna analysis LTCC天线分析中的三维空域封闭格林函数
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359454
M. Zhang, B. Ooi, Lewei Li, M. Leong
{"title":"3-D closed-form Green's functions in spatial-domain in LTCC antenna analysis","authors":"M. Zhang, B. Ooi, Lewei Li, M. Leong","doi":"10.1109/ICCS.2004.1359454","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359454","url":null,"abstract":"The effective three-dimensional (3-D) Green's functions in spatial domain for general electric and magnetic mixed potential in a multilayered media are presented. In terms of the discrete complex image method (DCIM) with higher order Sommerfeld identity, 3-D spatial-domain Green's functions are calculated in closed-form, and the numerical differentiation of the curl operator in mixed potential integral equation (MPIE) is avoided properly in spatial domain and it is especially suited for the LTCC antenna design with the vertical components and aperture coupled structures. The results are agreeable with the results of direct numerical Sommerfeld integral","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123969355","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 rectangular-cavity-backed cloverleaf slot antenna for circular polarization 用于圆极化的矩形腔背三叶草槽天线
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359446
T. Watanabe, K. Hirasawa, S. Nemoto
{"title":"A rectangular-cavity-backed cloverleaf slot antenna for circular polarization","authors":"T. Watanabe, K. Hirasawa, S. Nemoto","doi":"10.1109/ICCS.2004.1359446","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359446","url":null,"abstract":"Characteristics of a rectangular-cavity-backed cloverleaf slot antenna are investigated numerically and experimentally. The method of moments is used to calculate the antenna characteristics where the effects of the cavity are taken into account. The minimum axial ratio of 1.11 dB and the maximum gain of 10.6 dBi are obtained at 2.19 GHz. The frequency bandwidth for the axial ratio (AR) (< 3 dB) and VSWR (< 2) is 2.7%. The symmetrical radiation pattern is obtained with respect to the vertical. The calculated results on AR, VSWR, and radiation patterns are agree well with measured data","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125207094","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
Scheduling transmission of multimedia video traffic on optical access networks 光接入网中多媒体视频流量的调度传输
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359348
Yang Qin, M. Ma, Hong Li, Jianfeng Lin
{"title":"Scheduling transmission of multimedia video traffic on optical access networks","authors":"Yang Qin, M. Ma, Hong Li, Jianfeng Lin","doi":"10.1109/ICCS.2004.1359348","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359348","url":null,"abstract":"Passive optical networks: have shown to be much more attractive than access networks. In this paper, we study the problem of transmitting multimedia video traffic on a passive wavelength division multiplexing (WDM) optical network served as an access network. We explore the possibility of providing an integrated service directly at the WDM optical layer while taking into consideration the unique QoS requirement from multimedia video traffic stream. We introduce a novel multimedia video traffic scheduling framework to use in a passive optical access network. The results show that the proposed mechanism is capable of providing QoS guarantee for MPEG video applications while achieving high overall throughput","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125927131","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
Performance of BPSK serially concatenated convolutional codes in the presence of pulsed-noise jamming and Raleigh fading 脉冲噪声干扰和罗利衰落条件下BPSK串级卷积码的性能
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359427
E. S. Chia, R. Robertson
{"title":"Performance of BPSK serially concatenated convolutional codes in the presence of pulsed-noise jamming and Raleigh fading","authors":"E. S. Chia, R. Robertson","doi":"10.1109/ICCS.2004.1359427","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359427","url":null,"abstract":"In this paper, the bit error rate (BER) of BPSK with a four-state serially concatenated convolutional code (SCCC) with AWGN and pulsed-noise jamming transmitted over Rayleigh fading channels is examined. For low signal-to-noise ratios (SNR), simulation results are used, while for higher signal-to-noise ratios, an average upper bound is developed. Results show that Rayleigh fading is not as detrimental when a SCCC is used as compared to the uncoded case. Similar to the non-fading case, pulsed-noise jamming is more effective at higher signal-to-jamming noise ratios (SJR), while channel information is more useful at lower SNRs","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243042","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 novel verticle handover scheme for integrated WLAN and cellular wireless networks 一种新的无线局域网和蜂窝无线网络垂直切换方案
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359432
Serene Huiyi Wang, P. Kong
{"title":"A novel verticle handover scheme for integrated WLAN and cellular wireless networks","authors":"Serene Huiyi Wang, P. Kong","doi":"10.1109/ICCS.2004.1359432","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359432","url":null,"abstract":"The integration of wireless local area network (WLAN) and cellular wireless network is capable of providing ubiquitous data service, ranging from low to high speed in strategic locations. The commercial benefit of using WLAN in hot spots to relieve congestion in a cellular network is another motivation for the integration. For the integrated WLAN and cellular network, this paper proposes a novel vertical handover scheme to achieve better system utilization without compromising the quality of service (QoS) in terms of packet delay violation ratio. The handover scheme suggests performing an unconditional handover from WLAN to cellular network as long as it is needed. On the other hand, the handover from cellular network to WLAN is conditional and depending on user's traveling speed and cellular network's load. The proposed handover scheme has been evaluated using OPNET random event simulator. Simulation results show that, given a target user violation ratio, the proposed scheme can support a larger user arrival rate without compromising packet delay violation ratio. Also, the results show that the proposed scheme can reduce the number of toggling at the heterogeneous network boundary by 10% while maintaining the same user arrival rate","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122457046","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
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