In this paper, we consider single-user transmission over a Rayleigh flat fading channel, in which the channel state information (CSI) is known by the receiver only. Subject to an average transmit power constraint, we study the capacity of an additive white Gaussian noise (AWGN) channel with Rayleigh fading. Under an independently identically distributed fading assumption, lower and upper bounds of the channel capacity are given and proved and they are compared to the capacity results numerically computed. Besides, an approximation result of such channel capacity is proposed, and by conducting numerical comparison it is shown that our suggested approximation result has a better performance in approximating Rayleigh fading channels capacity than the bounds given above. In addition, the channel capacity with outage probability is discussed and compared with different outage probabilities.
{"title":"Rayleigh flat fading channels' capacity","authors":"Jun Li, A. Bose, Yiqiang Q. Zhao","doi":"10.1109/CNSR.2005.52","DOIUrl":"https://doi.org/10.1109/CNSR.2005.52","url":null,"abstract":"In this paper, we consider single-user transmission over a Rayleigh flat fading channel, in which the channel state information (CSI) is known by the receiver only. Subject to an average transmit power constraint, we study the capacity of an additive white Gaussian noise (AWGN) channel with Rayleigh fading. Under an independently identically distributed fading assumption, lower and upper bounds of the channel capacity are given and proved and they are compared to the capacity results numerically computed. Besides, an approximation result of such channel capacity is proposed, and by conducting numerical comparison it is shown that our suggested approximation result has a better performance in approximating Rayleigh fading channels capacity than the bounds given above. In addition, the channel capacity with outage probability is discussed and compared with different outage probabilities.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"34 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":"123851811","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}
Ad-hoc network features high mobility of network nodes, a large number of nodes and a large network span. In some applications of large scale ad hoc network, the grouping of different sets of nodes is extremely helpful in achieving efficient and scalable routing. The study focuses on how the size of each zone (cluster) can be determined such that it promotes efficient and optimum routing protocol for any function index. The added value of current research makes the cluster-based approach more universal and applicable both, at the physical layer and network layer. The study's implementation is based on minimum cost flow and uses the available optimized package developed in Fortran by Bertsekas (Dimitri, P et al., 1988) and later implemented in C by Frangioni and Gentile from the University of Pisa, Italy.
Ad-hoc网络具有网络节点移动性高、节点数量多、网络跨度大的特点。在大规模自组织网络的一些应用中，对不同的节点集进行分组对于实现高效和可扩展的路由非常有帮助。研究的重点是如何确定每个区域(集群)的大小，从而促进任何功能索引的高效和最佳路由协议。当前研究的附加值使得基于集群的方法在物理层和网络层都具有更强的通用性和适用性。该研究的实现基于最小成本流，并使用Bertsekas (Dimitri, P et al.， 1988)在Fortran中开发的可用优化包，后来由意大利比萨大学的Frangioni和Gentile在C中实现。
{"title":"Student paper: network decomposition in wireless communication","authors":"P. Mansinthorn, A. Bogobowicz","doi":"10.1109/CNSR.2005.43","DOIUrl":"https://doi.org/10.1109/CNSR.2005.43","url":null,"abstract":"Ad-hoc network features high mobility of network nodes, a large number of nodes and a large network span. In some applications of large scale ad hoc network, the grouping of different sets of nodes is extremely helpful in achieving efficient and scalable routing. The study focuses on how the size of each zone (cluster) can be determined such that it promotes efficient and optimum routing protocol for any function index. The added value of current research makes the cluster-based approach more universal and applicable both, at the physical layer and network layer. The study's implementation is based on minimum cost flow and uses the available optimized package developed in Fortran by Bertsekas (Dimitri, P et al., 1988) and later implemented in C by Frangioni and Gentile from the University of Pisa, Italy.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"44 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":"122571686","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}
Dual-frequency patch antennas may provide an alternative to large bandwidth planar antennas, in applications in which large bandwidth is really needed for operating at to separate transmit-receive bands. When the two frequencies are far apart, a dual frequency patch structure can be conceived to avoid the use of separate antennas. In this paper the multiport analysis is coupled with an intelligent fuzzy method, to design dual-band microstrip antennas with shorting strips. An efficient CAD tool is proposed to design this type of antennas. Simulation results are compared to the results obtained by the FEM-based software, HFSS and the experimental results are also included.
{"title":"An efficient CAD method to design dual-band probe-fed microstrip antennas using a fuzzy approach","authors":"V. Sathi, C. Ghobadi, J. Nourinia","doi":"10.1109/CNSR.2005.21","DOIUrl":"https://doi.org/10.1109/CNSR.2005.21","url":null,"abstract":"Dual-frequency patch antennas may provide an alternative to large bandwidth planar antennas, in applications in which large bandwidth is really needed for operating at to separate transmit-receive bands. When the two frequencies are far apart, a dual frequency patch structure can be conceived to avoid the use of separate antennas. In this paper the multiport analysis is coupled with an intelligent fuzzy method, to design dual-band microstrip antennas with shorting strips. An efficient CAD tool is proposed to design this type of antennas. Simulation results are compared to the results obtained by the FEM-based software, HFSS and the experimental results are also included.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"39 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":"128122452","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}
This paper describes ARAS, a prototype adaptive Website based on a novel and general adaptive Website framework. ARAS acts as a course counselor, guiding students through an online information system of university courses. Using realistic trial data the prototype demonstrates adaptive navigation, fragment substitution, link addition and removal and conditional fragment inclusion.
{"title":"ARAS: adaptive recommender for academic scheduling","authors":"M. Kilfoil, W. Xing, A. Ghorbani","doi":"10.1109/CNSR.2005.24","DOIUrl":"https://doi.org/10.1109/CNSR.2005.24","url":null,"abstract":"This paper describes ARAS, a prototype adaptive Website based on a novel and general adaptive Website framework. ARAS acts as a course counselor, guiding students through an online information system of university courses. Using realistic trial data the prototype demonstrates adaptive navigation, fragment substitution, link addition and removal and conditional fragment inclusion.","PeriodicalId":166700,"journal":{"name":"3rd Annual Communication Networks and Services Research Conference (CNSR'05)","volume":"60 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":"126464479","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}
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