发布求助
文献互助 智能选刊 最新文献

2005 5th International Conference on Information Communications & Signal Processing最新文献

筛选
英文 中文
Performance analysis of a Digital Phase-Locked Loop with a Hyperbolic Nonlinearity 双曲型非线性数字锁相环的性能分析
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689209
S. Kandeepan, S. Reisenfeld
{"title":"Performance analysis of a Digital Phase-Locked Loop with a Hyperbolic Nonlinearity","authors":"S. Kandeepan, S. Reisenfeld","doi":"10.1109/ICICS.2005.1689209","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689209","url":null,"abstract":"The treatment of phase locked loops (PLL) has been heavily looked into over the past several decades on its performances and analysis, and is a very old topic. However the usage of it has never been reduced with the rapid evolvement of various open loop and closed loop systems. In this paper we analyse the performance of an arctan based digital phase locked loop (DPLL) with a hyperbolic nonlinearity for single-tone carrier tracking. We purposely introduce the nonlinearity for improved performance of the closed loop system. We look at the acquisition performance of the DPLL by considering the phase plane portrait and the lock-in range of the loop. The steady state (SS) performance of the loop is analysed by considering the open loop SS statistical distribution of the phase noise","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122370347","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
Two-Pole Band-pass Filter Based on All-pass Filter 基于全通滤波器的两极带通滤波器
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689111
S. Yimman, S. Praesomboon, S. Klunium, S. Navarattara, K. Dejhan
{"title":"Two-Pole Band-pass Filter Based on All-pass Filter","authors":"S. Yimman, S. Praesomboon, S. Klunium, S. Navarattara, K. Dejhan","doi":"10.1109/ICICS.2005.1689111","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689111","url":null,"abstract":"This paper proposes the new two-pole band-pass filter design principle for the all-pass filter and notch filter by applying the least square. The first step is to design notch filter by using pole-zero placement and then modify pole positions to control pass-band filter gain to ensure the symmetry with the maximum gain at the target level. After that, there is the design of all-pass filter with pole at the same positions as the notch filters to make the negative cascade with the designed notch filter to get the transfer function with band-pass filter magnitude response. The results from the experiments on MATLAB have shown the two-pole band-pass filter of the new design with the accurate and symmetric gain","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122882881","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
On the Detection Methods for Indoor Ultra Wideband Communications with Multiple User Interference 室内超宽带多用户干扰检测方法研究
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689054
M. Mahfuz, K. Ahmed, R. Rajatheva
{"title":"On the Detection Methods for Indoor Ultra Wideband Communications with Multiple User Interference","authors":"M. Mahfuz, K. Ahmed, R. Rajatheva","doi":"10.1109/ICICS.2005.1689054","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689054","url":null,"abstract":"In high data rate indoor ultra wideband (UWB) communication systems, the selection of the appropriate detection method in the receiver is always an important problem. This paper compares the performances of two different detection methods, hard decision detection (HDD) and soft decision detection (SDD), for three different types of indoor UWB systems named time hopping pulse position modulation (TH-PPM), direct sequence bi-phase modulation (DS-BPM) and time hopping bi-phase modulation (TH-BPM) UWB indoor communication systems with multiple user interference (MUI). Using the recently accepted IEEE 802.15.3a UWB channel model, the three schemes were compared. Finally, it has been concluded that for both DS-BPM and TH-BPM systems, SDD outperforms HDD in terms of BER performance and so SDD should be chosen as the preferred detection scheme. However, in case of TH-PPM system, the system BER performance depends on the pulse repetition rate, any of SDD and HDD can be chosen as preferred detection scheme if one pulse per bit is used whereas for multiple pulses per bit SDD outperforms HDD significantly. Using SDD method, DS-BPM scheme can achieve the maximum SNR gain in presence of multiple user interference (MUI)","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116724771","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
Optimal Pilot and Fast Algorithm for MIMO-OFDM Channel Estimation MIMO-OFDM信道估计的最优导频和快速算法
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689247
Yonghong Zeng, A. R. Leyman, Shaodan Ma, T. Ng
{"title":"Optimal Pilot and Fast Algorithm for MIMO-OFDM Channel Estimation","authors":"Yonghong Zeng, A. R. Leyman, Shaodan Ma, T. Ng","doi":"10.1109/ICICS.2005.1689247","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689247","url":null,"abstract":"In this paper, a class of unitary transform based optimal pilots is found for time domain channel estimation in multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. Also, a frequency domain channel estimation which does not need interpolation is obtained. It is shown that the frequency domain method achieves the same performance as the time domain method and is better than interpolation methods. Furthermore, fast algorithms are proposed to implement the methods. Simulations demonstrate that the methods are effective","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128272355","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
A New Preemption Strategy with Re-routing Control for MPLS Networks 一种新的MPLS网络重路由控制抢占策略
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689312
Lau Chun Hau, B. Soong, S. Bose
{"title":"A New Preemption Strategy with Re-routing Control for MPLS Networks","authors":"Lau Chun Hau, B. Soong, S. Bose","doi":"10.1109/ICICS.2005.1689312","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689312","url":null,"abstract":"In this paper, we study the effects of preemption and re-routing on the performance of multi protocol label switching (MPLS) networks. MPLS with traffic engineering supports diversified quality of service (QoS) requirements and allows the setting up of explicit path through networks. Usually, traffic engineering is used to achieve load balancing where longer path may be used to route a connection to prevent part of the network from over-utilized. However, since a longer path needs more resources, this may increase the loss probability of a network. This is especially true if the connection routed is of high priority which cannot be preempted by future connections. We suggest that a high priority connection should always be routed on the shortest path to minimize the consumption of network resources. Preemption may be triggered to acquire the resources needed from the existing lower priority connections. The connections to be preempted can be re-routed to avoid the interruption of service. We introduce a new strategy to preempt the existing connections and control the re-routing process to avoid the explosion of re-routing process for a single preemption event. Finally, the simulation results show that the new strategy can limit the extent of re-routing process and improve the network performance significantly","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128285293","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
Research on QoS-Based Networks Node-State 基于qos的网络节点状态研究
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689041
L. Han, Zhengxin Ma, Hulling Zhu, Han Hu
{"title":"Research on QoS-Based Networks Node-State","authors":"L. Han, Zhengxin Ma, Hulling Zhu, Han Hu","doi":"10.1109/ICICS.2005.1689041","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689041","url":null,"abstract":"The selection and collection of the node state information have great impact on the design complexity and performance of a QoS routing algorithm. Continuous-media traffic (e.g. audio and video) can tolerate some loss but has rigid delay constraints. Under this QoS constraint, the node-delay's probability density function (PDF) is used to character the node state. The continuous-media traffic is in high burst. So the node-delay's PDF is shaped into normal distribution through a filter algorithm. Analysis and simulation show that the tail probability of the normal distribution can be used to calculate the end-to-end packet loss rate approximately. Then the variance and mean value of the PDF can be controlled to calculate a proper packet loss rate to satisfy the QoS demand. So normal distribution is a simple, achievable and reasonable description","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124761149","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
Interpolation capability of the periodic radial basis function 周期径向基函数的插补能力
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1049/IP-VIS:20050259
Y. Abe, Y. Iiguni
{"title":"Interpolation capability of the periodic radial basis function","authors":"Y. Abe, Y. Iiguni","doi":"10.1049/IP-VIS:20050259","DOIUrl":"https://doi.org/10.1049/IP-VIS:20050259","url":null,"abstract":"A periodic radial basis function (RBF) network is proposed based on the regularization approach. The periodic RBF network can interpolate discrete data more efficiently than the conventional one since the coefficients of the network can be computed by using the fast Fourier transform (FFT). For the evaluation of the interpolation capability, the frequency response of the periodic RBF network is analyzed. It is then shown that the frequency response is asymptotically equivalent to the ideal sine interpolation, and that the periodic RBF network is closer to the ideal sine interpolation than the cubic spline and Lanczos interpolations","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130413780","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: 9
Airport Detection Base on Support Vector Machine from A Single Image 基于支持向量机的单幅图像机场检测
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689106
Yanyun Qu, Cuihua Li, N. Zheng
{"title":"Airport Detection Base on Support Vector Machine from A Single Image","authors":"Yanyun Qu, Cuihua Li, N. Zheng","doi":"10.1109/ICICS.2005.1689106","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689106","url":null,"abstract":"Airport is one of the key transportation targets. Airport detection is very important in military and civil fields. A novel method to detect airports from a single image is proposed in this paper. It combines texture features with shape features, and uses support vector machine as a classification function. Canny edge detector is firstly used, then short lines and curves are removed, and long straight lines are detected by Hough transform, at last the airport runways are discriminated by support vector machine. The experimental results demonstrate the efficacy of the proposed automatic airport-detection method","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126861034","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: 39
Direction of Arrival Estimation Based on Distributed Sources Model in MIMO Channel Environment 基于分布式信源模型的MIMO信道到达方向估计
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689253
Yinghua Han, Jinkuan Wang, Xin Song, Zhigang Liu, Yanbo Xue
{"title":"Direction of Arrival Estimation Based on Distributed Sources Model in MIMO Channel Environment","authors":"Yinghua Han, Jinkuan Wang, Xin Song, Zhigang Liu, Yanbo Xue","doi":"10.1109/ICICS.2005.1689253","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689253","url":null,"abstract":"In MIMO channel, the presence of scatters results in angular spread. The point source model corresponding to discrete direction of arrival (DOA) becomes restrictive and leads to DOA estimation errors. To compensate for this effect, the distributed source model is proposed. A first order Taylor series expansion of the steering vector is derived, which is similar to the point source model. The proposed method is a possible alternative to MUSIC for the central DOA estimation. The algorithm that has lower computational cost can be used for sources with different distribution functions in MIMO channel. Simulations clearly demonstrate that the proposed method is not only effective, but also enjoys better SNR performance compared with MUSIC","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126986617","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
Steganalysis of Palette Images: Attack Optimal Parity Assignment Algorithm 调色板图像的隐写分析:攻击最优奇偶校验分配算法
2005 5th International Conference on Information Communications & Signal Processing Pub Date : 2005-12-06 DOI: 10.1109/ICICS.2005.1689171
Xiangwei Kong, Zi-Ren Wang, Xingang You
{"title":"Steganalysis of Palette Images: Attack Optimal Parity Assignment Algorithm","authors":"Xiangwei Kong, Zi-Ren Wang, Xingang You","doi":"10.1109/ICICS.2005.1689171","DOIUrl":"https://doi.org/10.1109/ICICS.2005.1689171","url":null,"abstract":"Steganography is the art of communicating a message by embedding it into multimedia data without drawing any suspicions. Optimal parity assignment (OPA) algorithm is one of palette image steganographic methods. But there is still no effective steganalytic method that can attack it reliably. In this paper, we present a statistical steganalysis for detecting the secret messages embedded by using OPA algorithm. Based on the analysis of RTS (replacement-transfer structure) of index replacement in GIF-based steganography, we explore the singular statistic of core elements in OPA stego-images via convergent continuous replacement (CCR) operation. On the other hand, we can estimate the statistic of cover image from stego-image by a special filtering operation. With the estimation of cover image statistic and the singular statistic of the stego-image, the length of secret messages embedded in GIF images with OPA algorithm can be estimated. The experimental results indicate that our algorithm can estimate the length of hidden messages accurately","PeriodicalId":425178,"journal":{"name":"2005 5th International Conference on Information Communications & Signal Processing","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123969744","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: 15
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信