2007 International Conference on Signal Processing, Communications and Networking最新文献_第7页

Greedy Local Delaunay Triangulation Routing for Wireless Ad Hoc Networks 无线自组织网络的贪婪局部Delaunay三角剖分路由

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350694

D. Satyanarayana

引用次数: 2

An Authentication Scheme for Multicast Networks 组播网络的认证方案

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350760

R. Srinivasan, V. Vaidehi, S. Arvind, A. Krishnakumar

引用次数: 0

Novel Convergence Model for Efficient Error Concealment using Information Hiding in Multimedia Streams 基于信息隐藏的多媒体流有效错误隐藏收敛模型

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350765

P. Kannan

{"title":"Novel Convergence Model for Efficient Error Concealment using Information Hiding in Multimedia Streams","authors":"P. Kannan","doi":"10.1109/ICSCN.2007.350765","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350765","url":null,"abstract":"Error concealment using information hiding has been an efficient tool to combat channel impairments that degrade the transmitted data quality by introducing channel errors/packet losses. The proposed model takes a stream of multimedia content and the binarised stream is subjected to bit level enhanced mapping procedure (PRASAN - Enhanced NFD approach) accompanied with a set of convergence models that ensure a high degree of convergence for a given error norm. The mapping is performed between the current frames with respect to the previous frame in case of video data. This approach often referred to as the correlation generation is followed by convergence mathematical function generation. This function is derived based on trying out the various convergence methodologies in a weighted round robin environment and choosing the best matching function by computing the mean square error. This error is termed map-fault and is kept a minimum. The test data taken are subjected to noisy channel environments and the power signal to noise ratios obtained experimentally support firmly the advantage of the proposed methodology in comparison to existing approaches","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194700","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

Bandwidth Allocation Algorithm for DOCSIS Based HFC Broadband Networks 基于DOCSIS的HFC宽带网络带宽分配算法

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350780

W. Al-Khatib, A. Rajeswari, K. Gunavathi

{"title":"Bandwidth Allocation Algorithm for DOCSIS Based HFC Broadband Networks","authors":"W. Al-Khatib, A. Rajeswari, K. Gunavathi","doi":"10.1109/ICSCN.2007.350780","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350780","url":null,"abstract":"The latest tremendous growth of the Internet has opened up a vast market for high-speed broadband data services to the home. Broadband network services have created great opportunities for new multimedia applications at both home and businesses. Data over cable service interface specification (DOCSIS) is the leading standard for data over cable networks. DOCSIS is developed to support IP flows with significantly higher data rate links for high quality data, audio, video and interactive services. It is important to provide traffic scheduling mechanisms to support quality of service (QoS) for such applications. DOCSIS defines six upstream services for supporting per-flow QoS. Among them it uses rt-PS service for real-time VBR traffic which has burst nature. The headend provides periodic opportunities for unicast request, namely polling, which yields higher delay and not suitable for real-time services. In this paper, a novel scheduling mechanism and bandwidth allocation algorithm has been proposed to support VBR multimedia traffic over DOCSIS. The proposed dynamic unsolicited grant service (DUGS) scheduling algorithm makes use of piggybacking request and changes the unsolicited grant size allocation dynamically. It is shown through simulation results that throughput, channel utilization and delay performance have been improved in case of DUGS, compared with current DOCSIS protocol. This algorithm can also keep fairness among connections","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115078508","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: 6

Design and Analysis of Four Cells Log Periodic Trapezoid Microstrip Antenna 四单元对数周期梯形微带天线的设计与分析

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350751

A. Vaish, M. Singh

引用次数: 0

Analysis and Implementation of Parallel Low-Complexity Motion Estimation 并行低复杂度运动估计的分析与实现

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350744

L. Subramanian, H. Chandrababu, P. Moorthy, M. Kannan

引用次数: 0

Parallel-Pipelined Architecture for the Kalman Based Adaptive Equalizer 基于卡尔曼自适应均衡器的并行流水线结构

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350725

K. Santha, V. Vaidehi

{"title":"Parallel-Pipelined Architecture for the Kalman Based Adaptive Equalizer","authors":"K. Santha, V. Vaidehi","doi":"10.1109/ICSCN.2007.350725","DOIUrl":"https://doi.org/10.1109/ICSCN.2007.350725","url":null,"abstract":"The requirement of many data communication systems is to employ an adaptive equalizer to minimize the inter-symbol interference. Several adaptive Kalman equalizers have been reported in literature. In these works either the least mean square (LMS) or the recursive least squares (RLS) or the Kalman algorithm have been adopted for channel estimation. The Kalman estimation method can lead to significant improvement in the receiver bit error rate (BER) performance. The use of a Kalman filter for channel estimation leads to a state model of size 2ntimes2n, where n is the number of filter taps. These solutions are computationally intensive and follow a nonlinear relation in the observation equation. New methods have to be followed to solve the nonlinear model resulting in complex parallel structures. This paper proposes a new approach for the real time implementation of the adaptive Kalman equalizer by providing two Kalman filters that run concurrently to perform the estimation and detection. Thus the Kalman estimator operates in parallel with the Kalman filter based equalizer following a linear model and the size of the state matrix reduces to ntimesn. Parallel-pipelined architectures are proposed to perform the time update and measurement update equations of the Kalman equalizer and Kalman estimator. The functionality of the proposed architecture has been verified through VHDL simulation. The synthesis results are presented. It is shown that the convergence performance of the proposed approach is superior to that of the Kalman-RLS and Kalman-LMS adaptive equalizers","PeriodicalId":257948,"journal":{"name":"2007 International Conference on Signal Processing, Communications and Networking","volume":"2007 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127300129","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

Geocomm - A Cost Optimised Geo Intelligent Mobile Communicator and Tracker Geocomm -一个成本优化的地理智能移动通信和跟踪器

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350653

B. Sardar, Y. Maru, S. Reddy, N. Hegde, A. Sen, R. Arora

引用次数: 0

Resource Control and Prediction Management for Quality of Service in Heterogeneous Active Networks 异构活动网络中服务质量的资源控制与预测管理

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350783

K. Vimala Devi, K. Mehata

引用次数: 0

Novel Approach to Improve the Performance of Artificial Neural Networks 提高人工神经网络性能的新方法

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI: 10.1109/ICSCN.2007.350778

V. Devendran, H. Thiagarajan, A. Wahi

引用次数: 0