Pub Date : 1900-01-01DOI: 10.1109/WCINS.2010.5541844
Tao He, Hao Zhong
Periodic sequence is used to complete the auxiliary work of applications. It is generally insensitive to the business logic, it is used to detect the existence of a network connection, or check for patches or updates. The existing products can only recognize periodic sequences with pre-defined static features. To improve the ability of recognizing periodic sequences, we develop a general algorithm based on timing characteristics, packet size, and properties of related network and application protocols. This paper presents a novel periodic sequence recognition technique that overcomes some of the limitations of existing approaches. The technique, combined with fuzzy theory, separates the network packets into sequences, extracts the signature of each sequence, and then recognizes the periodic sequences in the separated sequences. Through the assessment of network applications, the periodic sequences can be exactly recognized from the network packets, which produced by the network applications themselves.
{"title":"Periodic sequence in netflow recognizing algorithm","authors":"Tao He, Hao Zhong","doi":"10.1109/WCINS.2010.5541844","DOIUrl":"https://doi.org/10.1109/WCINS.2010.5541844","url":null,"abstract":"Periodic sequence is used to complete the auxiliary work of applications. It is generally insensitive to the business logic, it is used to detect the existence of a network connection, or check for patches or updates. The existing products can only recognize periodic sequences with pre-defined static features. To improve the ability of recognizing periodic sequences, we develop a general algorithm based on timing characteristics, packet size, and properties of related network and application protocols. This paper presents a novel periodic sequence recognition technique that overcomes some of the limitations of existing approaches. The technique, combined with fuzzy theory, separates the network packets into sequences, extracts the signature of each sequence, and then recognizes the periodic sequences in the separated sequences. Through the assessment of network applications, the periodic sequences can be exactly recognized from the network packets, which produced by the network applications themselves.","PeriodicalId":272940,"journal":{"name":"IEEE International Conference on Wireless Communications, Networking and Information Security","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121205048","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}
Pub Date : 1900-01-01DOI: 10.1109/WCINS.2010.5541740
Lizhong Song
This paper discussed the working performances of a kind of miniature spherical conformal Archimedean antenna. At first, a miniature planar Archimedean spiral antenna is modeled, then it is projected onto the surface of a dielectric sphere and the conformal Archimedean spiral antenna is formed. The proposed antenna model is simulated and the simulation results indicate that the simulated antenna has still ultra wide band (UWB) performance. The diameter of dielectric sphere is 82 millimeters and the relative permittivity is 2.2. For the working frequency range from 1GHz to 12GHz, the average voltage standing wave ratio (VSWR) is about 2 and the gain is more than 3dBi. The simulated antenna has approximately circular polarization characteristics within the frequency range from 2GHz to 12GHz. The discussed antenna basically maintains the UWB performances of the corresponding planar Archimedean spiral antenna and can be applied in some special cases such as UWB radar and communication systems.
{"title":"Simulation and analysis of a spherical conformal Archimedean spiral antenna","authors":"Lizhong Song","doi":"10.1109/WCINS.2010.5541740","DOIUrl":"https://doi.org/10.1109/WCINS.2010.5541740","url":null,"abstract":"This paper discussed the working performances of a kind of miniature spherical conformal Archimedean antenna. At first, a miniature planar Archimedean spiral antenna is modeled, then it is projected onto the surface of a dielectric sphere and the conformal Archimedean spiral antenna is formed. The proposed antenna model is simulated and the simulation results indicate that the simulated antenna has still ultra wide band (UWB) performance. The diameter of dielectric sphere is 82 millimeters and the relative permittivity is 2.2. For the working frequency range from 1GHz to 12GHz, the average voltage standing wave ratio (VSWR) is about 2 and the gain is more than 3dBi. The simulated antenna has approximately circular polarization characteristics within the frequency range from 2GHz to 12GHz. The discussed antenna basically maintains the UWB performances of the corresponding planar Archimedean spiral antenna and can be applied in some special cases such as UWB radar and communication systems.","PeriodicalId":272940,"journal":{"name":"IEEE International Conference on Wireless Communications, Networking and Information Security","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115376848","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}
Pub Date : 1900-01-01DOI: 10.1109/WCINS.2010.5541817
Lulu Chang, Chao Guo, Yongsheng Hu
The main idea of this paper is to categorize and summarize of existing methods which solve the selfish problem nature, systematic introduction of the classification of peer-to-peer networks of the phenomenon that exist in selfish nature and to discuss a variety of inhibition mechanism of selfish network method proposed since 2005. According to different mathematical modelling and analysis methods, the existed control methods are divided into four categories. Then all types of inhibitory mechanism are analyzed and compared. The comparison can help us more clearly understand the general approach to the research of selfish behavior and is conducive to engineering development in the selection of suitable inhibitory mechanisms. Finally, the future prospects for solving the selfish problem is proposed.
{"title":"The analysis and research of selfish question in p2p","authors":"Lulu Chang, Chao Guo, Yongsheng Hu","doi":"10.1109/WCINS.2010.5541817","DOIUrl":"https://doi.org/10.1109/WCINS.2010.5541817","url":null,"abstract":"The main idea of this paper is to categorize and summarize of existing methods which solve the selfish problem nature, systematic introduction of the classification of peer-to-peer networks of the phenomenon that exist in selfish nature and to discuss a variety of inhibition mechanism of selfish network method proposed since 2005. According to different mathematical modelling and analysis methods, the existed control methods are divided into four categories. Then all types of inhibitory mechanism are analyzed and compared. The comparison can help us more clearly understand the general approach to the research of selfish behavior and is conducive to engineering development in the selection of suitable inhibitory mechanisms. Finally, the future prospects for solving the selfish problem is proposed.","PeriodicalId":272940,"journal":{"name":"IEEE International Conference on Wireless Communications, Networking and Information Security","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128965462","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}
Pub Date : 1900-01-01DOI: 10.1109/WCINS.2010.5541919
Fan Yang, Shenghua Dai
Frequency-shift automatic blocking system has been widely applied in China's railway system. High-precision detection of the frequency-shift signal is important to railway driving safety. In this paper, a new algorithm for railway frequency-shift signal detection on the basis of frequency-domain analysis was presented. The main and accessory frequencies of railway signal were separated using FIR digital filtering technology. By combining under sampling technology, Zoom-FFT and energy centrobaric correction technology, detection of the low frequency and the upper/down side frequency of the railway signal were realized. This algorithm has been verified on ARM processor, test results demonstrate that this solution has the advantages of high accuracy, low complexity, good reliability and low cost, which is fit for railway frequency-shift signal detection.
{"title":"A single-chip solution for railway frequency-shift signal detection","authors":"Fan Yang, Shenghua Dai","doi":"10.1109/WCINS.2010.5541919","DOIUrl":"https://doi.org/10.1109/WCINS.2010.5541919","url":null,"abstract":"Frequency-shift automatic blocking system has been widely applied in China's railway system. High-precision detection of the frequency-shift signal is important to railway driving safety. In this paper, a new algorithm for railway frequency-shift signal detection on the basis of frequency-domain analysis was presented. The main and accessory frequencies of railway signal were separated using FIR digital filtering technology. By combining under sampling technology, Zoom-FFT and energy centrobaric correction technology, detection of the low frequency and the upper/down side frequency of the railway signal were realized. This algorithm has been verified on ARM processor, test results demonstrate that this solution has the advantages of high accuracy, low complexity, good reliability and low cost, which is fit for railway frequency-shift signal detection.","PeriodicalId":272940,"journal":{"name":"IEEE International Conference on Wireless Communications, Networking and Information Security","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123698282","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：