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2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing最新文献

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A new chaos-based communication scheme using observers 一种新的使用观察者的基于混沌的通信方案
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610776
K. Busawon, R. Kharel, Zabih Ghassemlooy
{"title":"A new chaos-based communication scheme using observers","authors":"K. Busawon, R. Kharel, Zabih Ghassemlooy","doi":"10.1109/CSNDSP.2008.4610776","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610776","url":null,"abstract":"In this paper, we propose a new chaos-based communication scheme using observers. The novelty lies in the masking procedure that is employed to hide the confidential information using the chaotic oscillator. We use a combination of the so-called addition and inclusion methods to mask the information. We compare two observers, the proportional observer (P-observer) and the proportional integral observer (PI-observer) that are employed as receivers for the proposed communication scheme. We show that the P-observer is not suitable for the proposed communication scheme since it imposes unpractical constraints on the messages to be sent. On the other hand, we show that the PI-observer is the best solution for the proposed communication scheme since it allows greater flexibility in choosing the gains of the observer and it does not impose any unpractical restriction on the message.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130679185","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: 6
Quantum-Dot Cellular ROM: A nano-scale level approach to digital data storage 量子点细胞ROM:一种纳米级的数字数据存储方法
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610826
E. Rahimi, S. Nejad
{"title":"Quantum-Dot Cellular ROM: A nano-scale level approach to digital data storage","authors":"E. Rahimi, S. Nejad","doi":"10.1109/CSNDSP.2008.4610826","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610826","url":null,"abstract":"In todaypsilas world of digital communication, high capacity high performance digital data storage is an ultimate solution to preserve sheer volume of data. Nanotechnology emerges to bring new digital media with high capacity and high performance, where digital data is stored at nano-scale. In this paper a quantum dot cellular automata ROM (QDCROM) has been designed and simulated. This ROM has a very simple structure but great specifications enabling us to store 2.5 GBits of digital data per cm2.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126448518","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
Embedded node around a DSP core for mobile sensor networks over 802.11 infrastructure 围绕DSP核心的嵌入式节点，用于802.11基础设施上的移动传感器网络
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610718
M. Nicolae, R. Dobrescu, M. Dobrescu, D. Popescu
{"title":"Embedded node around a DSP core for mobile sensor networks over 802.11 infrastructure","authors":"M. Nicolae, R. Dobrescu, M. Dobrescu, D. Popescu","doi":"10.1109/CSNDSP.2008.4610718","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610718","url":null,"abstract":"Digital signal processors (DSPs) are very efficient devices to implement algorithms for signal processing and analyzing. Endowing sensorial nodes from a sensor network with such processing cores it could lead to high performance because of the possibility of parallel and distribute processing and thus reducing the quantity of information spread into the network (network load). If such a node uses for communication a mature infrastructure like 802.11 standard, will be obtained a solution for implementing mobile sensor networks with high performance end cost efficient. In the same way of obtaining high performances with low costs we suggest that on the information chain from the physical quantity to the numerical result, the acquisition part to be done by an audio codec. In this way, the entire network may look like a Voice over IP (VoIP) mobile network, yet the information exchanged will not be voice but measures and commands with quality of service (QoS) inherited from VoIP.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"8 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120991818","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
Identifying differentiating characteristics of internet applications using Principal Component Analysis 使用主成分分析识别互联网应用程序的不同特征
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610757
Rogério N. Nogueira, A. Nogueira, P. Salvador, R. Valadas
{"title":"Identifying differentiating characteristics of internet applications using Principal Component Analysis","authors":"Rogério N. Nogueira, A. Nogueira, P. Salvador, R. Valadas","doi":"10.1109/CSNDSP.2008.4610757","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610757","url":null,"abstract":"An accurate mapping between traffic and their corresponding applications can be very important for a wide range of network management and measurement tasks including traffic engineering, service differentiation, performance/failure monitoring, and security. Having the ability to identify the differentiating characteristics of IP applications is a crucial issue that can form the basis for the development of an efficient application identification tool. This paper presents an approach, based on principal component analysis, that is able to identify differentiating characteristics of different Internet applications, including several peer-to-peer file sharing protocols. These applications have gained tremendous popularity in the past few years and, today, traffic generated by P2P systems accounts for a major fraction of the Internet traffic and is bound to increase.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133490341","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
Design of a communication and power supply system providing the spaceborne Magnetometer Front-end ASIC at remote locations 星载磁强计前端专用集成电路通信供电系统的设计
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610731
A. Pollinger, W. Magnes, A. Valavanoglou, H. Ottacher
{"title":"Design of a communication and power supply system providing the spaceborne Magnetometer Front-end ASIC at remote locations","authors":"A. Pollinger, W. Magnes, A. Valavanoglou, H. Ottacher","doi":"10.1109/CSNDSP.2008.4610731","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610731","url":null,"abstract":"The magnetometer front-end ASIC (MFA) is a device for reading out magnetic field sensors which are based on the fluxgate principle. The instrument was developed at the Space Research Institute (IWF) of the Austrian Academy of Sciences and is part of the magnetospheric multi scale (MMS) mission organized by NASA. In the MMS configuration the ASIC is positioned inside the spacecraft while the sensor is located remotely at the tip of a radially extended five meter long boom to achieve magnetic cleanliness requirements. Several shielded twisted pair wires are required for connection. In a possible future configuration the front-end ASIC might be located quite close to the sensor to minimize the effort of cabling and to reduce overall weight. It was the objective to investigate options for this new configuration and to develop and implement a solution for test purposes in laboratory with focus on minimizing the number of required wires and considering the harsh environment in space. The result of the investigation is a communication and power supply system based on an FPGA design, a specific driver circuit and a single twisted pair cable which provides the required power of 300 mW for components at the remote location and which enables the transport of information in both directions up to a maximum distance of 30 meters.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133888540","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
Compensation of distortions caused by periodic nonuniform holding signals 周期性非均匀保持信号引起的畸变补偿
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610774
C. Vogel, C. Krall
{"title":"Compensation of distortions caused by periodic nonuniform holding signals","authors":"C. Vogel, C. Krall","doi":"10.1109/CSNDSP.2008.4610774","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610774","url":null,"abstract":"We investigate the compensation of distortions caused by periodic nonuniform holding signals in digital-to-analog converters (DACs). Such holding signals can introduce additional distortions, which reduce the DAC performance considerably. A discrete-time model of such holding signals is introduced and the design of a time-varying filter to compensate them is elaborated. For two periodic nonuniform holding signals, we exemplify the filter design. The designed filter reduces the in-band distortions significantly, which is verified by simulations and measurements.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116273183","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
BER performance of DPSK subcarrier modulated free space optics in fully developed speckle DPSK副载波调制自由空间光学完全散斑下的误码率性能
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610818
W. Popoola, Zabih Ghassemlooy, E. Leitgeb
{"title":"BER performance of DPSK subcarrier modulated free space optics in fully developed speckle","authors":"W. Popoola, Zabih Ghassemlooy, E. Leitgeb","doi":"10.1109/CSNDSP.2008.4610818","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610818","url":null,"abstract":"In this paper a DPSK subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment. To mitigate the scintillation effect the selection combining spatial diversity scheme (SelC) is employed at the receiver. Bit error rate (BER) analysis is presented with and without SelC spatial diversity, and it is shown that at BER of 10-6 using four independent PIN-photodetectors, a diversity gain of not less than 38 dB is achievable.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114992749","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: 19
Hybrid wireless optics (HWO): Building the next-generation home network 混合无线光学(hho):构建下一代家庭网络
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610822
O. Bouchet, M. El Tabach, M. Wolf, D. O'Brien, G. Faulkner, J. Walewski, S. Randel, M. Franke, S. Nerreter, K. Langer, J. Grubor, T. Kamalakis
{"title":"Hybrid wireless optics (HWO): Building the next-generation home network","authors":"O. Bouchet, M. El Tabach, M. Wolf, D. O'Brien, G. Faulkner, J. Walewski, S. Randel, M. Franke, S. Nerreter, K. Langer, J. Grubor, T. Kamalakis","doi":"10.1109/CSNDSP.2008.4610822","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610822","url":null,"abstract":"Gigabit home access networks (HANs) are a pivotal technology to be developed if the European Union (EU) Vision of the Future Internet is to be realised. Consumers will require such HANs to be simple to install, without any new wires, and easy enough to use so that information services running on the HAN will be ldquojust another utility,rdquo as, for instance, electricity, water and gas are today. The hOME Gigabit Access (OMEGA) HAN project [1] aims at bridging the gap between home and access network, providing Gbit/s connectivity to users. The project considers a combination of various technologies such as radio frequency (RF) and free-space or wireless optical links (FSO - operating at infrared and visible wavelengths) in order to meet user demands and provide wireless connectivity within and the home and its surroundings. When combined with power-line communications this enables a home backbone that meets the ldquowithout new wiresrdquo vision. A technology-independent MAC layer will control this network and provide services as well as connectivity to any number of devices the user wishes to connect to it in any room in a house/apartment, and further, this MAC layer will allow the service to follow the user from device to device. In order to make this vision come true, substantial progress is required in the fields of optical-wireless physical layers, in protocol design, and in system architecture.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124506515","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: 55
Simulated S-band satellite-to-indoor link, measurement results and channel characterization 模拟s波段卫星到室内链路，测量结果和信道特性
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610719
F. Pérez-Fontán, V. Hovinen, M. Schonhuber, R. Prieto-Cerdeira, F. Teschl, P. Valtr
{"title":"Simulated S-band satellite-to-indoor link, measurement results and channel characterization","authors":"F. Pérez-Fontán, V. Hovinen, M. Schonhuber, R. Prieto-Cerdeira, F. Teschl, P. Valtr","doi":"10.1109/CSNDSP.2008.4610719","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610719","url":null,"abstract":"This paper is aimed at characterization of satellite-to-indoor communication channel. Results from measurement campaign simulating a satellite-to-indoor link are presented here. A wideband, directive channel sounder was placed inside several buildings, receiving signal from transmitter carried by a helicopter. Measurements results in the form of elevation dependent building penetration losses for various measurement sites are presented. Results in terms of delay spread are also provided for chosen measurement sites.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114061948","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
Distribution function for continental and maritime fog environments for optical wireless communication 分布功能为大陆和海上雾环境的光学无线通信
2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing Pub Date : 2008-07-25 DOI: 10.1109/CSNDSP.2008.4610728
M. S. Awan, E. Leitgeb, S. Muhammad, Marzuki, F. Nadeem, M.S. Khan, C. Capsoni
{"title":"Distribution function for continental and maritime fog environments for optical wireless communication","authors":"M. S. Awan, E. Leitgeb, S. Muhammad, Marzuki, F. Nadeem, M.S. Khan, C. Capsoni","doi":"10.1109/CSNDSP.2008.4610728","DOIUrl":"https://doi.org/10.1109/CSNDSP.2008.4610728","url":null,"abstract":"Free space optics (FSO) links in the troposphere are highly dependent on different atmospheric effects, which vary according to different climatic conditions. For terrestrial FSO links, fog is the most critical of all atmospheric effects causing optical signal attenuations up to 480 dB/km in dense maritime fog environments and 130 dB/km in moderate continental fog environments. In this paper a brief analysis of modified gamma particle size distribution (PSD) parameters for dense maritime fog and moderate continental fog is presented and discussed on the basis of standard reference data available. Moreover, an effort was made to briefly analyse and compare our measured continental and maritime fog attenuation data on the basis of Mie scattering parameters and the standard modified gamma PSD parameters, in order to estimate the values of modified gamma parameters and the total attenuation for the two kinds of fog environments.","PeriodicalId":241330,"journal":{"name":"2008 6th International Symposium on Communication Systems, Networks and Digital Signal Processing","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124004612","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: 30
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