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PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.最新文献

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Design of prototype filters for cosine-modulated filter banks using the constrained least-squares method 用约束最小二乘法设计余弦调制滤波器组的原型滤波器
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517349
Stuart W. A. Bergen
{"title":"Design of prototype filters for cosine-modulated filter banks using the constrained least-squares method","authors":"Stuart W. A. Bergen","doi":"10.1109/PACRIM.2005.1517349","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517349","url":null,"abstract":"A design method for M-channel cosine-modulated filter banks that achieves prescribed passband ripple and stopband attenuation in the subbands is proposed. The method is based on the minimization of a one-dimensional objective function and employs the constrained least-squares method of Selesnick, Lang, and Burrus for designing the prototype filter. When compared with other methods, the proposed method reduced the amplitude-response error in the filter bank at the expense of increased aliasing errors.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130573245","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 new architecture of TDM switch 一种新的时分复用交换机结构
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517303
S. Majumder, S. Kabir, R. Rahman, F. Imtiaz, M. Moniruzzaman
{"title":"A new architecture of TDM switch","authors":"S. Majumder, S. Kabir, R. Rahman, F. Imtiaz, M. Moniruzzaman","doi":"10.1109/PACRIM.2005.1517303","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517303","url":null,"abstract":"In conventional TST networks m /spl ges/ 2n - 1 time slots are needed for strict-sense non-blocking switch with n user per frame. Also, the TST has to use two layer of time slot interchange networks. In this paper, a totally new architecture is proposed. In this architecture, a hybrid space-time switch is used for the middle stage which switches TDM signals in time and space domain at the same time. It uses a delay network to delay a TDM signal for a particular call up to n - 1 time slots. The delay and incoming and outgoing time slot for a particular call is calculated using the algorithm given in this paper. As a result, the proposed switching architecture uses m = n time slots to make a strict-sense non-blocking switch with n user per frame. Also it uses only one layer of time slot interchangers.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125708667","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
Fast optimal radio resource allocation in OFDMA system based on branch-and-bound method 基于分支定界法的OFDMA系统无线资源快速优化分配
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517297
Zhiwei Mao, X. Wang, Jian Lin
{"title":"Fast optimal radio resource allocation in OFDMA system based on branch-and-bound method","authors":"Zhiwei Mao, X. Wang, Jian Lin","doi":"10.1109/PACRIM.2005.1517297","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517297","url":null,"abstract":"Our attention in this paper is focused on radio resource allocation (RRA) problems in orthogonal frequency division multiple access (OFDMA) systems. By assuming perfect channel estimation for all users, a fast optimal algorithm is developed to solve two classes of RRA problems: one class is to minimize the total transmission power at base station under the quality of service (QoS) constraint of each user, and the other class is to achieve maximum system data throughput under the constraints of maximal transmission power at base station and QoS of each user. The proposed algorithm is developed on the basis of the well-known branch-and-bound method. As shown in our results, the proposed algorithm offers the same performance as the optimal one achieved by using exhaustive full-search algorithm. However, the computational complexity involved in the proposed algorithm is significantly reduced.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122214471","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: 10
A computationally efficient method for estimating the channel impulse response for the IEEE 802.11b (WLAN) IEEE 802.11b (WLAN)信道脉冲响应估计的高效计算方法
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517355
M. Kedia
{"title":"A computationally efficient method for estimating the channel impulse response for the IEEE 802.11b (WLAN)","authors":"M. Kedia","doi":"10.1109/PACRIM.2005.1517355","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517355","url":null,"abstract":"In this paper a computationally efficient method for estimating the channel impulse response in the context of IEEE 802.11b WLAN standard that utilizes direct sequence spread spectrum technique is presented. This method introduces an approximation in the solution for channel impulse response that comprises the autocorrelation coefficient of the 11 chip barker sequence and cross correlation of barker sequence with the received signal. This approximation reduces the computational complexity significantly while maintaining the same performance level. The performance of the proposed method has been studied for various wireless indoor channel models and the effectiveness of the proposed method is demonstrated.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129247908","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 recursive adaptive lattice filters for impulsive signals 脉冲信号的递归自适应晶格滤波器
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517289
Li Sen, Qiu Tiang-shuang, Lin Bin, Yue Dian-wu
{"title":"A recursive adaptive lattice filters for impulsive signals","authors":"Li Sen, Qiu Tiang-shuang, Lin Bin, Yue Dian-wu","doi":"10.1109/PACRIM.2005.1517289","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517289","url":null,"abstract":"The existence of impulsive noise with alpha-stable distributions has been addressed in many applications. Some adaptive lattice algorithms that fractional lower order moments of residual errors are used to updated the filter coefficients are presented. In this paper, a new recursive adaptive lattice algorithm is proposed for adaptive filtering of alpha-stable AR processes. The performance of this algorithm is compared to that of those stochastic gradient-based algorithms. It is shown that the proposed algorithm achieves a superior convergence speed with respect to the other algorithms.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126496522","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
An associative memory model for unsupervised sequence processing 无监督序列处理的联想记忆模型
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517268
S. Pantazi, J. Moehr
{"title":"An associative memory model for unsupervised sequence processing","authors":"S. Pantazi, J. Moehr","doi":"10.1109/PACRIM.2005.1517268","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517268","url":null,"abstract":"We introduce the design principles and present formally the building block of an associative memory model capable of unsupervised sequence processing: the constrained partially ordered set. We then use the model in a series of experiments, presented in increasing order of complexity and conclude that it demonstrates interesting information processing capabilities which warrant future development.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117269981","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
Performance comparison of ECN-BLUE in both single bottleneck and multi-bottleneck networks ECN-BLUE在单瓶颈和多瓶颈网络中的性能比较
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517234
Xintong Liu, O. Yang
{"title":"Performance comparison of ECN-BLUE in both single bottleneck and multi-bottleneck networks","authors":"Xintong Liu, O. Yang","doi":"10.1109/PACRIM.2005.1517234","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517234","url":null,"abstract":"We investigate in this paper the application of ECN-BLUE, which uses packet marking to indicate congestion instead of dropping packets currently adopted by BLUE. We compare the performance of ECN-BLUE with BLUE in both a single bottleneck and a multi-bottleneck network. Our simulation results show that ECN-BLUE cannot further improve the performance of BLUE in terms of packet drop rate, average queue size and queue size stability.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"35 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120852043","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
Embedding the mesh in books 在书中嵌入网格
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517281
Erh-Ying Yen, Chien-Hung Huang, K. Ng, Po-Han Lee, Jywe-Fei Fang
{"title":"Embedding the mesh in books","authors":"Erh-Ying Yen, Chien-Hung Huang, K. Ng, Po-Han Lee, Jywe-Fei Fang","doi":"10.1109/PACRIM.2005.1517281","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517281","url":null,"abstract":"In this paper, we study the linear layout problem of the rectangular mesh by the embedding-in-book technique. Embedding a graph in a book is to place nodes on the spine of a book and to draw the edges such that edges residing in a page do not cross. We propose a scheme to embed an h /spl times/ w rectangular mesh with two pages and book width Min(h,w)-1.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121480887","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
An attendance management system using mobile phones 一个使用手机的考勤管理系统
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517358
H. Shibata
{"title":"An attendance management system using mobile phones","authors":"H. Shibata","doi":"10.1109/PACRIM.2005.1517358","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517358","url":null,"abstract":"It is a well-known fact that e-learning costs the teaching staff a lot of workloads. However, it is also known that students like e-learning classes, are doing well and are satisfied. We think one of the reasons that students like e-learning classes reside in using digital equipment. Operating digital equipment provides a stimulus to the monotonous classes and a sense of participation to the students. We apply the effect of using digital equipment during a class to improve the percentage of attendance. On the other hand, recently, especially in Japan, almost all students have mobile phones. In addition, almost all mobile phones have not only e-mail functions but also digital cameras. In this paper, making good use of both the effect of e-learning and the students' mobile phones, a simple and low cost attendance management system is proposed.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"281 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124502961","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
Transmitter Nyquist shaping for ICI reduction in OFDM systems with carrier frequency offset 载波频偏OFDM系统中减小ICI的发射机奈奎斯特整形
PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005. Pub Date : 2005-10-17 DOI: 10.1109/PACRIM.2005.1517337
N. Beaulieu, P. Tan
{"title":"Transmitter Nyquist shaping for ICI reduction in OFDM systems with carrier frequency offset","authors":"N. Beaulieu, P. Tan","doi":"10.1109/PACRIM.2005.1517337","DOIUrl":"https://doi.org/10.1109/PACRIM.2005.1517337","url":null,"abstract":"The effect of several Nyquist pulse-shapings, including the Franks pulse, the raised-cosine pulse, the \"better than\" raised-cosine pulse, the second-order continuous window, and the polynomial pulse on ICI reduction in OFDM systems with carrier frequency offset is studied.","PeriodicalId":346880,"journal":{"name":"PACRIM. 2005 IEEE Pacific Rim Conference on Communications, Computers and signal Processing, 2005.","volume":"22 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121014491","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
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