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4th Annual Communication Networks and Services Research Conference (CNSR'06)最新文献

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Adaptive Volterra predistorters for compensation of non-linear effects with memory in OFDM transmitters 用于补偿OFDM发射机非线性效应的自适应Volterra预失真器
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.13
Jian Li, J. Ilow
{"title":"Adaptive Volterra predistorters for compensation of non-linear effects with memory in OFDM transmitters","authors":"Jian Li, J. Ilow","doi":"10.1109/CNSR.2006.13","DOIUrl":"https://doi.org/10.1109/CNSR.2006.13","url":null,"abstract":"This paper proposes an adaptive extension of a least squares Volterra predistorter to compensate for the non-linearity of the high power amplifier (HPA) with memory effects in orthogonal frequency division multiplexing (OFDM) systems at the transmitter side. Specifically, the input and output of the nonlinear HPA are accessed in the feedback loop structure to obtain the Volterra kernel parameters using least mean square (LMS) and recursive least square (RLS) algorithms. Once the Volterra kernel is obtained and signals pass through the cascaded system of the predistorter and the HPA, overall linear system characteristics are achieved. The proposed method is non-parametric as it does not assume any specific model for the HPA and the signal structure. The performance of the proposed scheme is verified through computer simulations. The improvements in the reduction of out-of-band spectral regrowth and enhanced performance in terms of the bit error rate (BER) are documented for the traveling wave tube (TWT) HPA model","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124388091","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
A reconfigurable four-channel transceiver testbed with signalling-wavelength-spaced antennas under centralized FPGA control 集中FPGA控制下的可重构四通道信号波长间隔天线收发试验台
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.10
J. Harriman, B. Petersen, M. Kaye
{"title":"A reconfigurable four-channel transceiver testbed with signalling-wavelength-spaced antennas under centralized FPGA control","authors":"J. Harriman, B. Petersen, M. Kaye","doi":"10.1109/CNSR.2006.10","DOIUrl":"https://doi.org/10.1109/CNSR.2006.10","url":null,"abstract":"We propose a novel software defined radio implementation of a four-channel transceiver testbed with signaling-wavelength-spaced antennas. The radio frequency (RF) side of the system will be implemented using commercial off the shelf (COTS) products, whereas the baseband processing portion of the system will be implemented on a pair of Altera Stratix II EP2S180 development boards with high-speed analog devices analog-to-digital converter (ADC) daughter boards. The FPGA will be used to implement DSP algorithms and to affect centralized control over the entire system. A goal is to create a testbed for algorithms and radio channel measurements","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114503708","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
Incoherent hybrid spectral polarization and amplitude coding implemented with specified orthogonal ternary code over balanced photo-detectors 非相干混合光谱偏振和振幅编码在平衡光电探测器上实现了指定的正交三元编码
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.33
Jen-Fa Huang, Yao-Tang Chang
{"title":"Incoherent hybrid spectral polarization and amplitude coding implemented with specified orthogonal ternary code over balanced photo-detectors","authors":"Jen-Fa Huang, Yao-Tang Chang","doi":"10.1109/CNSR.2006.33","DOIUrl":"https://doi.org/10.1109/CNSR.2006.33","url":null,"abstract":"An improved hybrid spectral polarization and amplitude coding (hybrid SPC/SAC) scheme is presented with specified orthogonal ternary sequence. In the previous spectral polarization (SPC) scheme, the entire wavelength is assigned as vertical or horizontal state of polarization (SOP), respectively. In current study, we assign positive (+), negative (-), and nothing chip (0) value on individual wavelengths allocation to realize the specified orthogonal ternary sequence which transformed from original bipolar Walsh-Hadamard matrix. The motivation of this manner is to reduce the phase induced intensity noise (PIIN) resulting from the wavelengths collision on photo-detector. It is shown that wavelength collision can be decreased and PIIN noise is also reduced at photo-detector. Neglecting the effects of shot noise and thermal noise, and considering only phase-induced intensity-noise with a degree of polarization setting of P=0 for the ideal case, the bit error rate versus the number of simultaneous active users is approximately improved by 40% and 100% compared to the previous spectral polarization coding and complementary spectral amplitude coding (SAC) for a 10-9 error probability, respectively","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126504812","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
Toward a feature classification scheme for network intrusion detection 网络入侵检测的特征分类方案研究
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.53
Iosif-Viorel Onut, A. Ghorbani
{"title":"Toward a feature classification scheme for network intrusion detection","authors":"Iosif-Viorel Onut, A. Ghorbani","doi":"10.1109/CNSR.2006.53","DOIUrl":"https://doi.org/10.1109/CNSR.2006.53","url":null,"abstract":"One of the most important phases of the IDS/IPS design identifies the set of features that the system will use. This decision may influence both the performance of the system, and the types of attacks that it will detect. We present a feature classification schema for network intrusion detection, along with the implementation design, intended to provide a better understanding regarding the features that can be extracted from network packets. Our preliminary results show that the proposed schema has the potential to map each of the proposed feature groups into specific types of attacks","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125929845","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
A backup routing with wireless sensor network for bridge monitoring system 基于无线传感器网络的桥梁监控系统备份路由
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.5
Ren-Guey Lee, Kuei-Chien Chen, S. Chiang, Chien-Chi Lai, H. Liu, Ming-Shyan Wei
{"title":"A backup routing with wireless sensor network for bridge monitoring system","authors":"Ren-Guey Lee, Kuei-Chien Chen, S. Chiang, Chien-Chi Lai, H. Liu, Ming-Shyan Wei","doi":"10.1109/CNSR.2006.5","DOIUrl":"https://doi.org/10.1109/CNSR.2006.5","url":null,"abstract":"This paper proposed and implemented an efficient and reliable backup scheme for bridge monitoring system. It is mainly using the wireless sensor network (WSN) to gather the related environment parameters, and transmitting the numerical data to the gateway through multiple-hop relay, and then it further stores data in the back-end database for the professional monitoring staffs to analyze and study. The proposed backup scheme could to ameliorate the inconvenience to add or remove sensor nodes in an existing wired bridge monitoring network. Final, the feasibility of the proposed scheme is verified by experimental results","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"600 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120875948","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: 60
Performance of space-time block coded MB-OFDM UWB systems 空时分组编码MB-OFDM UWB系统的性能
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.40
Tan-Hsu Tan, Kuan-Chih Lin
{"title":"Performance of space-time block coded MB-OFDM UWB systems","authors":"Tan-Hsu Tan, Kuan-Chih Lin","doi":"10.1109/CNSR.2006.40","DOIUrl":"https://doi.org/10.1109/CNSR.2006.40","url":null,"abstract":"This paper presents two MIMO-MB-OFDM UWB systems which include the space-time block coded MB-OFDM (STBC-MB-OFDM) UWB and convolutional space-time block coded MB-OFDM (CCSTBC-MB-OFDM) UWB. A series of experiments is conducted over the UWB channels with 2ISO and 2I2O configurations. Experimental results indicate that the 2I2O STBC-MB-OFDM is applicable to the real-time multimedia service in the general wireless digital home environment, and CCSTBC-MB-OFDM can be considered for the extremely adverse channel environment","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123794197","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: 33
An energy-efficient MAC protocol for mobile ad hoc networks 一种高效的移动自组织网络MAC协议
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.17
Yongsheng Shi, T. Gulliver
{"title":"An energy-efficient MAC protocol for mobile ad hoc networks","authors":"Yongsheng Shi, T. Gulliver","doi":"10.1109/CNSR.2006.17","DOIUrl":"https://doi.org/10.1109/CNSR.2006.17","url":null,"abstract":"A mobile ad hoc network (MANET) is a collection of two or more nodes equipped with wireless communications and a networking capability without central network control. Nodes in a MANET are free to move and organize themselves in an arbitrary fashion. Energy-efficient design is a significant challenge due to the characteristics of MANETs such as distributed control constantly changing network topology, and mobile users with limited power supply. The IEEE 802.11 MAC protocol includes a power saving mechanism. However; it has many limitations. A new energy-efficient MAC protocol (EE-MAC) is proposed in this paper. This protocol elects master nodes which keep awake and act as a network backbone to transfer data. The other (stave) nodes sleep to conserve energy and wake up periodically to communicate with the masters. To balance energy consumption, a rotation mechanism of masters and slaves is used. It is shown that EE-MAC performs better titan IEEE 802.11 power saving mode and exceeds IEEE 802.11 with respect to balancing network throughput and energy savings. The performance of EE-MAC is considered with respect to network load, node density and network mobility","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127426934","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
Cartesian core routing and cartesian border gateway design 笛卡尔核心路由和笛卡尔边界网关设计
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.21
Larry Hughes, Jian Wang
{"title":"Cartesian core routing and cartesian border gateway design","authors":"Larry Hughes, Jian Wang","doi":"10.1109/CNSR.2006.21","DOIUrl":"https://doi.org/10.1109/CNSR.2006.21","url":null,"abstract":"Cartesian routing is an alternative to existing routing techniques. Its basic principle is that the network is topologically dependent instead of routing table dependent. Cartesian routing does not use routing tables, so the routing table searching time is eliminated. Cartesian core routing (CCR) was proposed to replace BGP and become the backbone routing protocol without influencing network end users. To achieve this purpose, a new type of router called the cartesian border gateway is designed to connect the CCR network and autonomous systems (AS). In this paper, cartesian core routing and cartesian border gateway are discussed","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124031487","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 lifetime-extending deployment strategy for multi-hop wireless sensor networks 多跳无线传感器网络的延寿部署策略
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.7
Sze-Chu Liu
{"title":"A lifetime-extending deployment strategy for multi-hop wireless sensor networks","authors":"Sze-Chu Liu","doi":"10.1109/CNSR.2006.7","DOIUrl":"https://doi.org/10.1109/CNSR.2006.7","url":null,"abstract":"The issue of deployment strategy of sensor nodes to -extend the lifetime of a multi-hop wireless sensor network is addressed. Based on load-balancing concept, an algorithm is proposed to deploy homogeneous sensor nodes in a wireless sensor network with a given number of sensor nodes which are continuously monitoring an area of interest. The densities of sensor nodes ore determined by solving an optimization problem which maximizes the coverage percentage under the constraints that the traffic loads among sensor nodes at different distances are equal. Simulations are performed by using the proposed algorithm accompanied with energy-efficient clustering and gradient-based routing algorithms. The simulation results indicate that, for a given number of battery-powered sensor nodes, the network with sensors deployed in the proposed distribution can sustain for extended lifetime and break down more gracefully than that for 2-D Poisson distribution while maintaining satisfactory coverage","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129431229","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: 37
Reverse link outage probability analysis for cellular CDMA systems employing successive interference cancellation 采用连续干扰消除技术的蜂窝 CDMA 系统的反向链路中断概率分析
4th Annual Communication Networks and Services Research Conference (CNSR'06) Pub Date : 2006-05-24 DOI: 10.1109/CNSR.2006.45
H. Nie, J. Ilow
{"title":"Reverse link outage probability analysis for cellular CDMA systems employing successive interference cancellation","authors":"H. Nie, J. Ilow","doi":"10.1109/CNSR.2006.45","DOIUrl":"https://doi.org/10.1109/CNSR.2006.45","url":null,"abstract":"In this paper, the reverse link outage probabilities of cellular CDMA systems employing single-user detection (SUD) and successive interference cancellations (SIC), respectively, are analyzed by assuming that inter-cell interference follows lognormal distribution. Both theoretical and computer simulation results show that for any outage probability cellular CDMA systems employing SIC can achieve much higher reverse link capacities as compared to those employing SUD","PeriodicalId":425107,"journal":{"name":"4th Annual Communication Networks and Services Research Conference (CNSR'06)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126886","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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