Pub Date : 2012-05-29DOI: 10.1109/FSKD.2012.6234143
Wei-gui Zeng, Ying-feng Sun, Ping-yun Zhu
Automatic gain control (AGC) is an important way to expand input dynamic range and improve sensitivity of radar receiver. Digital automatic gain control (DAGC) is widely used in large dynamic range & high sensitivity radar digital receiver. In this paper, we propose a DAGC algorithm for radar digital receiver, and analyze the property of algorithm. Next, a simplified implementation of the algorithm is developed and simulated. Simulation results show that the designed DAGC algorithm can rapidly adjust gain to satisfy the needs of gain control in large dynamic range & high sensitivity radar digital receiver.
{"title":"The DAGC algorithm design for large dynamic range & high sensitivity radar digital receiver","authors":"Wei-gui Zeng, Ying-feng Sun, Ping-yun Zhu","doi":"10.1109/FSKD.2012.6234143","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234143","url":null,"abstract":"Automatic gain control (AGC) is an important way to expand input dynamic range and improve sensitivity of radar receiver. Digital automatic gain control (DAGC) is widely used in large dynamic range & high sensitivity radar digital receiver. In this paper, we propose a DAGC algorithm for radar digital receiver, and analyze the property of algorithm. Next, a simplified implementation of the algorithm is developed and simulated. Simulation results show that the designed DAGC algorithm can rapidly adjust gain to satisfy the needs of gain control in large dynamic range & high sensitivity radar digital receiver.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125246489","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6233978
L. Zhang, Miao Hu, Xiaoming Li, Fan Zhang, QinChao Huang
In this paper, we propose an opportunistic cooperative transmission (OCT) scheme combined with bi-directional relaying and physical layer network coding (PNC) in wireless sensor networks (WSNs).This scheme can be switched between PNC based distributed space-time block coding scheme and cooperative network-assisted diversity multiple access scheme to obtain the minimized frame-error-ratio (FER) performance. We analyze the FER performance difference when the two schemes are adopted separately to find the location of the relay where the system should change its cooperative scheme to obtain the smaller FER. Numerical and simulation results demonstrate that lower error rate can be obtained wherever the relay locates in the proposed scheme.
{"title":"Opportunistic cooperative transmission scheme based on network coding in wireless sensor networks","authors":"L. Zhang, Miao Hu, Xiaoming Li, Fan Zhang, QinChao Huang","doi":"10.1109/FSKD.2012.6233978","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6233978","url":null,"abstract":"In this paper, we propose an opportunistic cooperative transmission (OCT) scheme combined with bi-directional relaying and physical layer network coding (PNC) in wireless sensor networks (WSNs).This scheme can be switched between PNC based distributed space-time block coding scheme and cooperative network-assisted diversity multiple access scheme to obtain the minimized frame-error-ratio (FER) performance. We analyze the FER performance difference when the two schemes are adopted separately to find the location of the relay where the system should change its cooperative scheme to obtain the smaller FER. Numerical and simulation results demonstrate that lower error rate can be obtained wherever the relay locates in the proposed scheme.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126956402","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234204
Xin Zhang, Ren-jin Zhang
Wavelet is the last decade developed and quickly applied to a mathematical tool in many areas of image processing and speech analysis is a new breakthrough following Fourier (Joseph Fourier) analysis. Wavelet transform analysis of the local characteristics of the digital signal can depend on the scale stretching and displacement transformation, and then show the essential characteristics of digital signals within the. Firstly, the principle of the wavelet transform algorithm, and then use the two-dimensional discrete wavelet transform image decomposition and reconstruction, and experiments carried out by using MATLAB software environment. The desired results of expe-riments on wavelet transform image processing capability has been fully affirmed.
{"title":"The technology research in decomposition and reconstruction of image based on two-dimensional wavelet transform","authors":"Xin Zhang, Ren-jin Zhang","doi":"10.1109/FSKD.2012.6234204","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234204","url":null,"abstract":"Wavelet is the last decade developed and quickly applied to a mathematical tool in many areas of image processing and speech analysis is a new breakthrough following Fourier (Joseph Fourier) analysis. Wavelet transform analysis of the local characteristics of the digital signal can depend on the scale stretching and displacement transformation, and then show the essential characteristics of digital signals within the. Firstly, the principle of the wavelet transform algorithm, and then use the two-dimensional discrete wavelet transform image decomposition and reconstruction, and experiments carried out by using MATLAB software environment. The desired results of expe-riments on wavelet transform image processing capability has been fully affirmed.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115595584","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234091
A. Geng, Baohe Li, Xiaobai Chen, Xiaodong Yang, Mingjiang Yang
A simple method determining the thermal focal length of gain medium was investigated. Then by using computer simulation results, a novel configuration was proposed. In the new configuration, the gain medium acts as a mode limiter at maximal pump power, which restrains resonance of high-order modes and guarantees not only high output power but also high beam quality. An LD side-pumped Nd:YAG laser with output power of 400W at 1064nm was obtained experimentally with the new configuration. The experimental results are in agreement with theoretical predictions.
{"title":"Computer simulation of thermal focal length of laser crystal and thermally-near-unstable resonator","authors":"A. Geng, Baohe Li, Xiaobai Chen, Xiaodong Yang, Mingjiang Yang","doi":"10.1109/FSKD.2012.6234091","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234091","url":null,"abstract":"A simple method determining the thermal focal length of gain medium was investigated. Then by using computer simulation results, a novel configuration was proposed. In the new configuration, the gain medium acts as a mode limiter at maximal pump power, which restrains resonance of high-order modes and guarantees not only high output power but also high beam quality. An LD side-pumped Nd:YAG laser with output power of 400W at 1064nm was obtained experimentally with the new configuration. The experimental results are in agreement with theoretical predictions.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122924640","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6233921
Lunfeng Gong, Huan Lei, Li Zhu
Association rule is an important technology in Data mining. In library lending services, it can be used to analyze and add up the library loan services and information, and can scientifically carry out proposed borrow and recommended books to improve the efficiency of library management. By case analysis, it shows that the apriori algorithm in the association rule can effectively tap the hidden behind the valuable information in the data, and provide decision support for the library services and help libraries to carry out personalized information services.
{"title":"The application of association rules of data mining in book-lending service","authors":"Lunfeng Gong, Huan Lei, Li Zhu","doi":"10.1109/FSKD.2012.6233921","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6233921","url":null,"abstract":"Association rule is an important technology in Data mining. In library lending services, it can be used to analyze and add up the library loan services and information, and can scientifically carry out proposed borrow and recommended books to improve the efficiency of library management. By case analysis, it shows that the apriori algorithm in the association rule can effectively tap the hidden behind the valuable information in the data, and provide decision support for the library services and help libraries to carry out personalized information services.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124672739","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234276
P. Yang, Y. Zhang
In Mobile Ad Hoc Network (MANET), the wireless medium is shared by the nodes in the network, and the available bandwidth is the most important parameter for the QoS policy designing. The estimating method in IEEE802.11e based MANET is proposed in our paper. With the method of channel monitoring, collision estimating and backoff duration predicting, the available bandwidth estimating can be achieved with the distributed manner. Results show that our proposed estimating method is accurate.
{"title":"Available Bandwidth Estimating Method in IEEE802.11e based Mobile Ad Hoc Network","authors":"P. Yang, Y. Zhang","doi":"10.1109/FSKD.2012.6234276","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234276","url":null,"abstract":"In Mobile Ad Hoc Network (MANET), the wireless medium is shared by the nodes in the network, and the available bandwidth is the most important parameter for the QoS policy designing. The estimating method in IEEE802.11e based MANET is proposed in our paper. With the method of channel monitoring, collision estimating and backoff duration predicting, the available bandwidth estimating can be achieved with the distributed manner. Results show that our proposed estimating method is accurate.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130533337","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234356
Ke Lu, Bing Fan, Yi Sun
In wireless sensor networks, clustering algorithm prolongs network lifetime significantly. The network is often organized into clusters of equal size, but such even clustering method results in unequal loads on the cluster heads(CHs). To balance the energy consumption of the network nodes, an uneven Clustering Algorithm based on Fuzzy Theory(FTCA) is proposed. With the consideration of both the node's location and residual energy during CHs election, the algorithm optimizes the clustering probability. Triangle module operator in fuzzy theory is used to integrate the degree of location-based membership function and that of the residual energy. And the probability for a node to be a CH is decided by fusion result. Therefore, the network is divided into uneven clusters. Simulation results show that FTCA effectively balances and reduces the energy consumption of the network, and obviously prolongs the network lifetime.
{"title":"An Uneven Clustering Algorithm Based on Fuzzy Theory for Wireless Sensor Networks","authors":"Ke Lu, Bing Fan, Yi Sun","doi":"10.1109/FSKD.2012.6234356","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234356","url":null,"abstract":"In wireless sensor networks, clustering algorithm prolongs network lifetime significantly. The network is often organized into clusters of equal size, but such even clustering method results in unequal loads on the cluster heads(CHs). To balance the energy consumption of the network nodes, an uneven Clustering Algorithm based on Fuzzy Theory(FTCA) is proposed. With the consideration of both the node's location and residual energy during CHs election, the algorithm optimizes the clustering probability. Triangle module operator in fuzzy theory is used to integrate the degree of location-based membership function and that of the residual energy. And the probability for a node to be a CH is decided by fusion result. Therefore, the network is divided into uneven clusters. Simulation results show that FTCA effectively balances and reduces the energy consumption of the network, and obviously prolongs the network lifetime.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124131164","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234019
Kejun Zhao, Xin Lu, Wenzhou Zheng, Chunqing Huang
As for MPC controllers, hard-constraint such as constraints on input magnitude or/and rate are generally regarded as an inviolable rule that has to be satisfied strictly before the cost function is optimized at each sampling instant. Such strategy is to result in control conservatism of MPC, as well as infeasibility problem. In this paper, constraint-softening technique is proposed, in which hard-constraint are relaxed appropriately and hence the region of hard-constraint is enlarged directly in optimizer of MPC. As a result, transient performance of the resulting system is significantly improved. Meanwhile, the feasibility problem is solved via this approach. A simulation result demonstrates the effectiveness of the proposed constraint-softening technique.
{"title":"Direct relaxation of hard-constraint in Model Predictive Control","authors":"Kejun Zhao, Xin Lu, Wenzhou Zheng, Chunqing Huang","doi":"10.1109/FSKD.2012.6234019","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234019","url":null,"abstract":"As for MPC controllers, hard-constraint such as constraints on input magnitude or/and rate are generally regarded as an inviolable rule that has to be satisfied strictly before the cost function is optimized at each sampling instant. Such strategy is to result in control conservatism of MPC, as well as infeasibility problem. In this paper, constraint-softening technique is proposed, in which hard-constraint are relaxed appropriately and hence the region of hard-constraint is enlarged directly in optimizer of MPC. As a result, transient performance of the resulting system is significantly improved. Meanwhile, the feasibility problem is solved via this approach. A simulation result demonstrates the effectiveness of the proposed constraint-softening technique.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"287 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115333658","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234123
Yi Sun, Yongfeng Cao, Liangrui Tang
Wireless sensor networks (WSNs) are usually deployed in the work area for a long time, but most key managements are not stable enough that brings great threats to the WSNs. In this paper a multi-phase key pre-distribution scheme based on hash chain (HM scheme) is proposed in which the work time is divided into phases with different key matrixes to guarantee the safety of WSNs. Simulation results prove that HM scheme performs with perfect stability even though the nodes change greatly.
{"title":"A multi-phase key pre-distribution scheme based on hash chain","authors":"Yi Sun, Yongfeng Cao, Liangrui Tang","doi":"10.1109/FSKD.2012.6234123","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234123","url":null,"abstract":"Wireless sensor networks (WSNs) are usually deployed in the work area for a long time, but most key managements are not stable enough that brings great threats to the WSNs. In this paper a multi-phase key pre-distribution scheme based on hash chain (HM scheme) is proposed in which the work time is divided into phases with different key matrixes to guarantee the safety of WSNs. Simulation results prove that HM scheme performs with perfect stability even though the nodes change greatly.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124320977","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 : 2012-05-29DOI: 10.1109/FSKD.2012.6234131
Yongqing Lang, Jingui Wei, Qiang Fu
Since 2010, the Twitter-like microblogging service has been one of the most popular media in China. This article firstly discusses the unique characteristics of microblogging service and its influence on Chinese society, and then suggests some ways to deal with the media administration in microblogging era.
{"title":"A pilot research on the microblogging service in China","authors":"Yongqing Lang, Jingui Wei, Qiang Fu","doi":"10.1109/FSKD.2012.6234131","DOIUrl":"https://doi.org/10.1109/FSKD.2012.6234131","url":null,"abstract":"Since 2010, the Twitter-like microblogging service has been one of the most popular media in China. This article firstly discusses the unique characteristics of microblogging service and its influence on Chinese society, and then suggests some ways to deal with the media administration in microblogging era.","PeriodicalId":337941,"journal":{"name":"International Conference on Fuzzy Systems and Knowledge Discovery","volume":"418 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115995912","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}
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