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

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EVM performance of zero biasing EAM in radio-over-fiber transmission 无线光纤传输中零偏EAM的EVM性能
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359349
L. Ong, B. Luo, M. Yee, C. G. Lim, M. Chia
{"title":"EVM performance of zero biasing EAM in radio-over-fiber transmission","authors":"L. Ong, B. Luo, M. Yee, C. G. Lim, M. Chia","doi":"10.1109/ICCS.2004.1359349","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359349","url":null,"abstract":"This paper investigates the transmission characteristics of an optical signal which is modulated by a RF signal using a zero biasing electro-absorption modulator (EAM). A passive picocell for high capacity and short range wireless networks has been investigated based on an unbiased EAM that acts as a passive transceiver at the remote site of the radio-over-fiber (ROF) link. Bias voltages of the EAM and bias currents of a distributed feedback (DFB) laser diode (LD) were varied for the evaluation of the optical power measurements","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"76 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":"124766158","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
Performance evaluation of DC-free error-control block codes 无直流纠错分组码的性能评价
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359417
F. Zhai, Y. Xin, I. Fair
{"title":"Performance evaluation of DC-free error-control block codes","authors":"F. Zhai, Y. Xin, I. Fair","doi":"10.1109/ICCS.2004.1359417","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359417","url":null,"abstract":"DC-free error-control block codes integrate dc-free encoding and error-control block encoding. To reduce the effect of error extension introduced by dc-free decoding and to allow for soft decoding of error-control codes, dc-free error-control block codes are decoded at the receiver by applying error-control decoding techniques prior to dc-free decoding. In this paper, we show that in addition to ensuring both dc-free and error-control properties in the encoded symbol sequence, it is possible to use this coding structure to enforce runlength constraints. We also model the dc-constrained channel with a simple RC high-pass filter, and demonstrate that on this channel with additive white Gaussian noise, dc-free error-control block codes result in superior bit error rate performance, particularly when source data logic values are not equiprobable","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":"125282453","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
Resource management in cellular communication networks with subscriber profile prediction 具有用户轮廓预测的蜂窝通信网络中的资源管理
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359363
N. Yilmaz, R. Ergul
{"title":"Resource management in cellular communication networks with subscriber profile prediction","authors":"N. Yilmaz, R. Ergul","doi":"10.1109/ICCS.2004.1359363","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359363","url":null,"abstract":"In this paper, a dynamic resource management and subscriber profile prediction scheme for mobile communication systems is presented. Using this approach, a high level of QoS for both handoff calls and new calls, and better utilization of wireless network resources has been achieved. The simultaneous satisfaction of these two actually conflicting interests is due to two key features. First, it is due to the subscriber profile predicted using subscriber data. This a priori information about possible handoffs is provided by the mobile terminal and subsequently used for reservation requests. This information is based on the cell transition probabilities calculated by the mobile itself using collected information during past operations. Second, it is due to a two-way approach implemented in the radio resource reservation and new call admission processes. The two-way approach controls both the amount of reservation and the new call admission process in a highly dynamic way, depending on the subscriber mobility and network traffic conditions. Simulation and analytical results are presented and they indicate that proposed approach is superior to techniques previously reported","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"10 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":"127656541","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
Adaptive scheduling for differentiated services in the ethernet passive optical networks 以太网无源光网络中差异化业务的自适应调度
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359347
M. Ma, Lishan Liu, T. Cheng
{"title":"Adaptive scheduling for differentiated services in the ethernet passive optical networks","authors":"M. Ma, Lishan Liu, T. Cheng","doi":"10.1109/ICCS.2004.1359347","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359347","url":null,"abstract":"Ethernet passive optical network (EPON) is a technology viewed as an attractive solution to the \"last mile\" problem. The interleaved polling with adaptive cycle time (IPACT) is a remarkable medium access control (MAC) protocol for EPON. There are two aspects within IPACT. One is inter-optical network unit (ONU) scheduling. The other is intra-ONU scheduling. In this paper, we propose a systematic adaptive scheduling scheme to enhance the functions of IPACT on both the inter-ONU scheduling and the intra-ONU scheduling in order to achieve efficient bandwidth utilization of the EPON under unbalanced traffic and to provide class-of-service (COS) or differentiated services within an ONU. The simulation results show that our proposed scheduling scheme can improve the performance of the EPON system under unbalanced traffic loads and provide fair bandwidth allocation of the uplink to different types of traffic","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"51 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":"124590950","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
Time-hopping sequences with zero correlation zone for approximately synchronized THSS-UWB systems 近似同步THSS-UWB系统的零相关带跳时序列
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359331
Zhenyu Zhang, F. Zeng, L. Ge
{"title":"Time-hopping sequences with zero correlation zone for approximately synchronized THSS-UWB systems","authors":"Zhenyu Zhang, F. Zeng, L. Ge","doi":"10.1109/ICCS.2004.1359331","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359331","url":null,"abstract":"In this paper, a novel time-hopping (TH) sequences family with TH zero correlation zone (ZCZ) for approximately synchronized time-hopping spread spectrum ultra wideband (THSS-UWB) systems is presented. When the approximate chip synchronization is held in the whole system, the multiple-access interference (MAI) of THSS-UWB systems employing the proposed ZCZ TH sequences is eliminated, and such THSS-UWB systems are more tolerant to the multipath problem. Consequently, the need of accurate synchronism in whole system is reduced while orthogonal communications are realized","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":"125773372","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: 7
An integrated design of multipath routing with failure survivability in MPLS networks MPLS网络中具有故障生存能力的多径路由集成设计
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1093/ietcom/e90-b.4.856
Xiao Yu, G. Feng, Kheng Leng Gay, C. Siew
{"title":"An integrated design of multipath routing with failure survivability in MPLS networks","authors":"Xiao Yu, G. Feng, Kheng Leng Gay, C. Siew","doi":"10.1093/ietcom/e90-b.4.856","DOIUrl":"https://doi.org/10.1093/ietcom/e90-b.4.856","url":null,"abstract":"Multipath routing employs multiple parallel paths between the source and destination for a connection request to improve resource utilization of a network. In this paper, we provide an integrated design of multipath routing in MPLS networks. In addition, we take into account the quality of service (QoS) in carrying delay-sensitive traffic and failure survivability in the design. Path protection or restoration policies enables the network to accommodate link failures and avoid traffic loss. We evaluate the performance of the proposed schemes in terms of call blocking probability, network resource utilization and load balancing factor. The results demonstrate that the proposed integrated design framework can provide effective network failure survivability, and also achieve better load balancing and/or higher network resource utilization","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"34 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":"130666002","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: 7
Dynamic adaptive PMD compensation in a 40Gb/s OTDM system 40Gb/s OTDM系统的动态自适应PMD补偿
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359436
Li Tang-jun, Wang Muguang, Jian Shuisheng, Lou Caiyun, Huo Li, Yao Hejun, Ning Tigang, Diao Cao, Gong Xiangfeng, Fu Yongjun, Tang Zhongwei, Liu Yan
{"title":"Dynamic adaptive PMD compensation in a 40Gb/s OTDM system","authors":"Li Tang-jun, Wang Muguang, Jian Shuisheng, Lou Caiyun, Huo Li, Yao Hejun, Ning Tigang, Diao Cao, Gong Xiangfeng, Fu Yongjun, Tang Zhongwei, Liu Yan","doi":"10.1109/ICCS.2004.1359436","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359436","url":null,"abstract":"An experiment of two-stages four degrees high-order polarization mode dispersion (PMD) compensation in 40 Gb/s optical communication system with a large PMD is reported. The former stage adopts polarization controller and fixed time-delayed line of polarization-maintaining fiber (PMF). The second stage consists of a polarization rotator and a tunable differential group delay (DGD) line that is based on magneto optical crystal. The second stage is used to compensate remnant first-order PMD. The PMD monitoring technique adopted degree of polarization (DOP) as error signal. A novel practical adaptive optimization algorithm was introduced in dynamic adaptive PMD compensation. Some experimental results show that large PMD is compensated by this compensator in a 40 Gbits/s non-return-to-zero (NRZ) OTDM transmission systems. A significant improvement of system performance can be achieved in the eye pattern of a received signal. Most first-order compensating ability of the compensator is 35 ps. Second-order compensating ability of the compensator is 200 ps2 . The optimum compensating time is within several milliseconds","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"4 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":"131888734","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 of peak-to-average power ratio of a multicarrier system based on the fractional Fourier transform 基于分数阶傅里叶变换的多载波系统峰均功率比分析
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359360
Y. Ju, B. Barkat, S. Attallah
{"title":"Analysis of peak-to-average power ratio of a multicarrier system based on the fractional Fourier transform","authors":"Y. Ju, B. Barkat, S. Attallah","doi":"10.1109/ICCS.2004.1359360","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359360","url":null,"abstract":"This paper evaluates the peak-to-average power ratio (PAR) performance of a multicarrier system based on the fractional Fourier transform (FRFT). Analytical evaluation and simulations verify that this system, which greatly outperforms classical OFDM system in rapidly fading channels, can also provide a better PAR performance in some situations. In addition, further PAR reduction can be obtained by applying the well-known selective mapping method (SLM)","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"34 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":"132189425","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: 15
Analysis of the phase noise in HPI systems HPI系统中的相位噪声分析
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359361
Ma Zhangyong, Young-il Kim
{"title":"Analysis of the phase noise in HPI systems","authors":"Ma Zhangyong, Young-il Kim","doi":"10.1109/ICCS.2004.1359361","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359361","url":null,"abstract":"Orthogonal frequency-division multiplexing (OFDM) exhibits a significant sensitivity to the phase noise of the oscillator. For this reason, it is important to evaluate the impact of the phase noise on the system performance. In this paper, the background for phase noise is presented. Meanwhlie, the two models are given for the purpose of the analysis and simulation. Then, the effect of phase noise is analyzed in detail. The phase noise analysis of VCO is presented. In particular, the analysis result is verified by the numerical example and simulation","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"1 4 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":"133815224","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
Mackey-glass based communication scheme: systemf security analysis 基于Mackey-glass的通信方案:系统安全性分析
The Ninth International Conference onCommunications Systems, 2004. ICCS 2004. Pub Date : 2004-11-30 DOI: 10.1109/ICCS.2004.1359391
Mahendra, S. Puthusserypady
{"title":"Mackey-glass based communication scheme: systemf security analysis","authors":"Mahendra, S. Puthusserypady","doi":"10.1109/ICCS.2004.1359391","DOIUrl":"https://doi.org/10.1109/ICCS.2004.1359391","url":null,"abstract":"Use of chaotic sequences as spreading sequences for spread spectrum communications is being widely studied. This paper proposes a benchmarking scheme to judge how well a chaotic sequence satisfies the requirements of a spreading sequence, allowing comparison of various sequences proposed so far. Security analysis of chaotic spreading sequences (using Mackey-Glass DDE) is done, and it is demonstrated that the security afforded by the chaotic spreading sequences is proportional to the complexity of the chaotic attractor generating the sequence","PeriodicalId":333629,"journal":{"name":"The Ninth International Conference onCommunications Systems, 2004. ICCS 2004.","volume":"264 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":"131482337","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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