3rd Annual Communication Networks and Services Research Conference (CNSR'05)最新文献_第3页

A new analytic approach to evaluation of packet error rate in wireless networks 一种新的无线网络分组错误率分析方法

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.14

R. Khalili, Kave Salamatian

{"title":"A new analytic approach to evaluation of packet error rate in wireless networks","authors":"R. Khalili, Kave Salamatian","doi":"10.1109/CNSR.2005.14","DOIUrl":"https://doi.org/10.1109/CNSR.2005.14","url":null,"abstract":"Bit error rate (BER) and packet error rate (PER) are important quality of service parameters for wireless network. Most of researches in QoS have been devoted to the analysis of BER which gives insight to the mean behavior of the wireless network. However the mean behavior is not sufficient for PER evaluation and more precise characterization of the error process is needed. Residual errors at the output of physical layer are not uniformly distributed. This is due to error correcting mechanism used at physical layer as well as the correlation induced by the memory existing in fading channels. Not taking into account the correlation in the error process and assuming for example that errors are uniformly distributed, as done in most of the published paper in wireless networking, lead to gross overestimation of PER. This over-estimation can go to tenfold factors as will be shown in this paper. In a previous paper we presented a new analytic formula for predicting packet error rate in wireless networks where convolutional codes are used jointly with Viterbi decoder over an AWGN channel. The approach was based on a precise analysis of the error process at the output of the Viterbi decoder. This formula was shown to precisely predict the PER as a function of convolutional code parameter and SNR over the AWGN channel. In this paper we extend the result obtained for the AWGN channel to the case of fading channel under block fading hypothesis. A closed form formulas approximation for derivation of PER in fading channel is proposed and it is shown that it give very tight prediction for the PER.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123993051","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: 80

ENCAST: energy-critical node aware spanning tree for sensor networks 传感器网络的能量关键节点感知生成树

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.32

Shoudong Zou, I. Nikolaidis, J. Harms

引用次数: 17

A MIMO parameter estimation model taking Ricean fading channel and stochastically uncorrelated signals into account. Part II. Asymptotically efficient estimators 考虑Ricean衰落信道和随机不相关信号的MIMO参数估计模型。第二部分。渐近有效估计量

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.12

Bamrung Tau Sieskul, S. Jitapunkul

{"title":"A MIMO parameter estimation model taking Ricean fading channel and stochastically uncorrelated signals into account. Part II. Asymptotically efficient estimators","authors":"Bamrung Tau Sieskul, S. Jitapunkul","doi":"10.1109/CNSR.2005.12","DOIUrl":"https://doi.org/10.1109/CNSR.2005.12","url":null,"abstract":"The purpose of this paper is twofold; to demonstrate parameter estimation possibility of MIMO model and to propose an asymptotically efficient approach for estimating three channel parameters such as, nominal direction, angular spread and rice factor. Manipulating the estimation in efficient manner, the benchmark and the proposed estimators are based on weighted least squares (WLS) criteria. Rather than invoking the sample covariance estimate in ordinary WLS criterion, the proposed approach makes use of structured covariance estimate for computing the weight matrix. The nonparametric estimate presented here in is the way to constrain the array covariance matrix to hold the Toeplitz structure so that the residual due to imposing the structured weight matrix is less than that provided by employing the ordinary sample covariance. As a matter of course, this leads to more advantage for parameter estimation, particularly, in non-asymptotic region of temporal snapshot number. Numerical examples are conducted to validate the superiority in non-asymptotic situations.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122030951","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: 5

Connectivity with static transmission range in vehicular ad hoc networks 车辆自组织网络中具有静态传输范围的连通性

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.29

M. Artimy, W. Phillips, W. Robertson

引用次数: 74

A framework for self-management of hybrid wireless networks using autonomic computing principles 基于自主计算原理的混合无线网络自我管理框架

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.8

Chong Shen, D. Pesch, J. Irvine

{"title":"A framework for self-management of hybrid wireless networks using autonomic computing principles","authors":"Chong Shen, D. Pesch, J. Irvine","doi":"10.1109/CNSR.2005.8","DOIUrl":"https://doi.org/10.1109/CNSR.2005.8","url":null,"abstract":"The dramatic increase in the number of mobile subscribers has put a significant resource and service provisioning strain on current cellular networks in particular in terms of multimedia and high-data rate service provision. Hybrid wireless networks, which is a novel scalable and adaptive wireless network architecture utilizing a mixture of cellular and ad hoc multi-hop routing, facilitates cellular network design with small cell systems without having to wire a large number of base stations into a core network. However, this new network design has drawbacks in terms of routing complexity, radio resource heterogeneity and network infrastructure design growth. Traditional centralised system administration methods become too inflexible to result in a manageable cellular system. A recently introduced concept-autonomic computing, based on stimulation from biological systems, may provide a remedy to the state of unmanageability. The Autonomic computing paradigm, recently coined autonomic communications, when applied to communication systems and networks, enables self-management, which is composed of self-protecting, self-healing, self-configuring and self-optimizing components. This self-management is not necessarily novel as technologies such as neural networks, fuzzy logic, genetic algorithms and evolutional methods have already been proposed to facilitate limited self-configuration and self-optimization when embedded with cellular and ad hoc networks. However, a structure or framework has been lacking so far. In this paper we propose an architecture for a framework of autonomic computing based on policies for a hybrid wireless network and investigate the merits of each of its functions.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132832986","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: 33

Neural network based channel estimation and performance evaluation of time varying multipath satellite channel 基于神经网络的时变多径卫星信道估计与性能评价

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.44

Q. Rahman, M. Ibnkahla, M. Bayoumi

引用次数: 17

Optimization of three dimensional retrodirective arrays 三维反向定向阵列的优化

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.46

B. Feng, Z. Chen

引用次数: 2

Managing access control for presence-based services 管理基于状态的服务的访问控制

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.40

A. Dersingh, R. Liscano, A. Jost

引用次数: 3

A presentation specification language for adaptive Web systems 用于自适应Web系统的表示规范语言

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.15

S. H. Sadat-Mohtasham, A. Ghorbani

引用次数: 2

A self-managed predicate-based cache 基于谓词的自管理缓存

3rd Annual Communication Networks and Services Research Conference (CNSR'05) Pub Date : 2005-05-16 DOI: 10.1109/CNSR.2005.16

Yaomin Fu, P. Bodorik, D. Jutla

引用次数: 3