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2007 International Symposium on Intelligent Signal Processing and Communication Systems最新文献

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A new method for joint estimation of three-dimensional parameters of coherent signals 相干信号三维参数联合估计的新方法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445832
Du Gang, Zhang Yongshun, W. Yongliang, Jiang Xinying
{"title":"A new method for joint estimation of three-dimensional parameters of coherent signals","authors":"Du Gang, Zhang Yongshun, W. Yongliang, Jiang Xinying","doi":"10.1109/ISPACS.2007.4445832","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445832","url":null,"abstract":"A new method is proposed to estimate the frequency and 2- D arrival angles of coherent signals over a wide frequency band, which is called time-space smoothing DOA algorithm (TSS-DOA). Firstly the time-space smoothing matrix is constructed by temporal data and spatial data of two uniform parallel linear arrays and smoothing technique, and then 3-D parameters of coherent signals can be obtained from its eigenvalues and the corresponding eigenvectors. The algorithm can precisely estimate 3-D parameters of coherent signals, and doesn't need the multidimensional spectrum peak search with smaller computational load and parameters paired automatically. In addition, it can still estimate correctly 3-D parameters of signals when signals have the same one or two dimensional parameters. Simulation results show that the proposed algorithm is effective.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121392891","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
Asymptotic performance analysis of LDPC coded iterative multi-user detection schemes with EXIT charts 具有EXIT图的LDPC编码迭代多用户检测方案的渐近性能分析
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4446006
Dongchang Hu, Lin Wang, Qinfang Wei
{"title":"Asymptotic performance analysis of LDPC coded iterative multi-user detection schemes with EXIT charts","authors":"Dongchang Hu, Lin Wang, Qinfang Wei","doi":"10.1109/ISPACS.2007.4446006","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4446006","url":null,"abstract":"The threshold determinations of system parameters in LDPC coded multi-user detection algorithm are investigated with EXIT Charts in this paper. It is showed that the tolerable maximal cross correlation coefficient of the iterative detection algorithm is about 0.7, and under the proper cross correlation coefficient it is found that the minimum signal to noise ratios (SNR) converges with the user number in the cell, which indicates the successful cancellation of the MAI among users. Simulation results also show the minimum signal to noise ratios' linear increases with the code rate, which illuminates that the code rate will have more influence on the system performance once the cross correlation matrix is fixed.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122655059","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
E-touch: Overlay-based video surveillance system for urban security E-touch:城市安防覆盖式视频监控系统
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445934
Xuesong Cao, Zhaoping Wang, Ruimin Hu
{"title":"E-touch: Overlay-based video surveillance system for urban security","authors":"Xuesong Cao, Zhaoping Wang, Ruimin Hu","doi":"10.1109/ISPACS.2007.4445934","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445934","url":null,"abstract":"This paper presents a novel distributed video surveillance system (E-touch) on overlay network. E-touch is constructed by a set of overlay nodes that can provide intelligence media service. The system allows service composition of distributed stream processing applications dynamically, to satisfy their end-to-end QoS demands. Compare to traditional centralized-group management scheme, our approach achieves better scalability and resource utilization by efficiently allocating media service resources. Large-scale experimental results demonstrate the scalability, efficiency and performance of the E-touch system.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122765407","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
Design and analysis of adaptive-bandwidth all-digital phase-locked loop 自适应带宽全数字锁相环的设计与分析
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445825
Y. Chau, Chen-Feng Chen, Kwn-Dai Tsai
{"title":"Design and analysis of adaptive-bandwidth all-digital phase-locked loop","authors":"Y. Chau, Chen-Feng Chen, Kwn-Dai Tsai","doi":"10.1109/ISPACS.2007.4445825","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445825","url":null,"abstract":"To obtain better locking performance and wider locking range, the adaptive-bandwidth all-digital phase-locked loop (AB-ADPLL) is proposed and designed in the paper. With the AB-ADPLL, the parameters of the digital loop filter can be adaptively adjusted using a parameter estimator in accordance with the input frequency. From the design example given in the context and corresponding simulation results, it is disclosed that the AB-ADPLL outperforms the non-adaptive ADPLL.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131418093","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
An immune spectral clustering algorithm 一种免疫谱聚类算法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445882
Xiangrong Zhang, Xiaoxue Qian, L. Jiao, Gaimei Wang
{"title":"An immune spectral clustering algorithm","authors":"Xiangrong Zhang, Xiaoxue Qian, L. Jiao, Gaimei Wang","doi":"10.1109/ISPACS.2007.4445882","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445882","url":null,"abstract":"A new clustering approach namely immune spectral clustering algorithm (ISCA) is proposed in this paper. It combines spectral clustering with immune algorithm for data clustering. In this algorithm, making use of the dimension reduction ability of the spectral clustering algorithm, an immune clonal clustering algorithm is used to cluster the data points in the mapping space. Because we can get tight clusters after mapping with the spectral clustering, and the immune clonal clustering algorithm characterized by rapid convergence to global optimum and minimal sensitivity to initialization, we can get a better data clustering. Experimental results over four data sets from UCI database show the efficiency of our algorithm.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131575678","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
A novel fuzzy QoS location-aided routing algorithm for mobile Ad hoc network 一种新的移动Ad hoc网络模糊QoS定位辅助路由算法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445888
Jiang Guo-xing, Liu Ming-na
{"title":"A novel fuzzy QoS location-aided routing algorithm for mobile Ad hoc network","authors":"Jiang Guo-xing, Liu Ming-na","doi":"10.1109/ISPACS.2007.4445888","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445888","url":null,"abstract":"In this paper, we propose a novel fuzzy on-demand QoS routing algorithm FQLAR, which can accommodate the information inaccuracy of mobile ad hoc network. Comparing with the conventional routing algorithm, FQLAR utilizes geographic position information to flood directionally routing packets, applies fuzzy membership function to make the fuzzy evaluation of link, and chooses a optimum path to transmit data packets according to the cost of path. The results of simulation on ns2 shows that FQLAR can achieve better performance such as packet delivery ratio, route discovery frequency and route success ratio.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131739807","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
Basic relationship on capacity of bluetooth piconets 蓝牙小网容量的基本关系
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4446012
Gang Xu, C. Tian
{"title":"Basic relationship on capacity of bluetooth piconets","authors":"Gang Xu, C. Tian","doi":"10.1109/ISPACS.2007.4446012","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4446012","url":null,"abstract":"This paper analyzes the capacity of medium access in a Bluetooth system. A random model of data transmission has been developed, establishing the relationship between data rate and transmission success rate (or data loss rate) for the first time, i.e., in a piconet, too large data rate will surely bring data loss for any scheduling. It is hoped that this work will form the basis for future research.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127700066","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
Efficient implementation of Volterra systems using a multilinear SVD 利用多线性SVD实现Volterra系统的高效实现
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445999
E. Seagraves, B. Walcott, D. Feinauer
{"title":"Efficient implementation of Volterra systems using a multilinear SVD","authors":"E. Seagraves, B. Walcott, D. Feinauer","doi":"10.1109/ISPACS.2007.4445999","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445999","url":null,"abstract":"A large class of nonlinear systems have been successfully modeled using Volterra series techniques. The problem with Volterra series is that the number of parameters grows very rapidly with the order of the nonlinearity and the memory in the system. Techniques exist to efficiently model and compensate for Volterra systems but are often not practical to implement. One approach is to factor the Volterra kernels into a sum of simple terms that are easy to implement. Approaches utilizing the eigen-decomposition have been published for second order nonlinearities. This work proposes using a multilinear extension of the SVD to factor third and higher order kernels into terms that are easily implemented.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132374371","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
An efficient image coding using multiple subbands integer wavelet decomposition 利用多子带整数小波分解实现高效的图像编码
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445910
Li-bao Zhang, Xianchuan Yu
{"title":"An efficient image coding using multiple subbands integer wavelet decomposition","authors":"Li-bao Zhang, Xianchuan Yu","doi":"10.1109/ISPACS.2007.4445910","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445910","url":null,"abstract":"Integer wavelet transform (IWT) and IWT-based image coding offer many advantages over traditional wavelet. But coefficient magnitudes of the IWT-image have smaller dynamic change value and worse energy compaction than the first generation wavelet. Those reduce efficiency of IWT-based coding. In this paper, we present a new still image coder based on multiple subbands decomposition and IWT (integer wavelet transform). These high frequency subbands with the higher entropy can be decomposed secondly. Experimental results show that the lossy performance of the new coder is quite competitive with other efficient lossy compression methods.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114147025","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
Parallel MIMO detection algorithm based on householder transformation 基于户主变换的并行MIMO检测算法
2007 International Symposium on Intelligent Signal Processing and Communication Systems Pub Date : 2007-11-01 DOI: 10.1109/ISPACS.2007.4445853
Yun Wang, Jinkuan Wang, Zhibin Xie
{"title":"Parallel MIMO detection algorithm based on householder transformation","authors":"Yun Wang, Jinkuan Wang, Zhibin Xie","doi":"10.1109/ISPACS.2007.4445853","DOIUrl":"https://doi.org/10.1109/ISPACS.2007.4445853","url":null,"abstract":"A parallel MIMO detection algorithm (HPD) based on Householder transformation is proposed to improve the high bit error performance when the sorted QR decomposition detection algorithm (SQRD) is detected in Rayleigh slow fading channel. It transforms the channel matrix columns orthogonally based on Householder transformation to avoid solving the upper triangular matrix and sorts the channel matrix only once. In the processing of judging signal, it proposes a parallel processing of judged signal's feedback and received signal's interference cancellation, so the detection performance is improved distinctly. Under the environment of multiple scattering wireless communications, the simulation experiment results show that compared to the sorted QR decomposition algorithm, the complexity of the HPD algorithm is reduced dramatically.","PeriodicalId":220276,"journal":{"name":"2007 International Symposium on Intelligent Signal Processing and Communication Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116761396","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
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