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2009 Mediterrannean Microwave Symposium (MMS)最新文献

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The scalability of the hybrid protocol in wireless mesh network 802.11s 无线网状网络802.11s中混合协议的可扩展性
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409759
B. Nassereddine, A. Maach, S. Bennani
{"title":"The scalability of the hybrid protocol in wireless mesh network 802.11s","authors":"B. Nassereddine, A. Maach, S. Bennani","doi":"10.1109/MMS.2009.5409759","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409759","url":null,"abstract":"One of the attractive features of the wireless mesh network is its ability to scale to larger covered area by simply adding more wireless routers. This scalability increases the average number of hops from source to destination and hence it may affect the network performance in terms of delay and throughput. Many solutions have been proposed for wireless mesh networks. Among them the 802.11s proposes a Hybrid Wireless mesh Protocol HWMP. This protocol combines the functionalities of the Radio Metric Ad-hoc On demand Distance Vector protocol RM-AODV and the Tree Based Routing protocol TBR. In this work we propose to evaluate the scalability of the HWMP using network simulator NS2. For this purpose we used a grid wide network topologies with n*n static Mesh Point MP routers. The simulation results show a very interesting result related to the loss rate, path establishment delay, network throughput and signaling overhead.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125739328","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: 16
All-optical microwave receiver 全光微波接收机
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409810
Yifei Li, P. Herczfeld
{"title":"All-optical microwave receiver","authors":"Yifei Li, P. Herczfeld","doi":"10.1109/MMS.2009.5409810","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409810","url":null,"abstract":"In this paper we describe the design of a microwave receiver in which photonic components replace analog microwave circuitry. The receiver is targeted to provide a spurious free dynamic range of ∼140dBHz⅔ and a signal to noise ratio of 7dB in the 0 to 20GHz range with a 4 GHz bandwidth.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133034451","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
Circularly polarized microstrip patch antenna gain improvement using new left-handed metamaterial structure 利用新型左旋超材料结构提高圆极化微带贴片天线增益
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409763
I. Issa, R. Rian, M. Essaaidi
{"title":"Circularly polarized microstrip patch antenna gain improvement using new left-handed metamaterial structure","authors":"I. Issa, R. Rian, M. Essaaidi","doi":"10.1109/MMS.2009.5409763","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409763","url":null,"abstract":"In this paper, we achieved a very important gain improvement for a circularly polarized (CP) patch antenna using a new left handed medium (LHM) structure. To this end, a homogenization procedure of the LHM is carried out in order to design the patch antenna at a suitable frequency where the losses of the LHM are low. From the results we obtained, it is noted that in the presence of the LHM, the antenna is more directive and has a higher gain.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129611807","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
Optimizing the communication paths in optimal Wireless Sensor Network deployment 无线传感器网络最优部署中的通信路径优化
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409840
A. Tahiri, E. Egea-López, J. Vales-Alonso, J. García-Haro, M. Essaaidi
{"title":"Optimizing the communication paths in optimal Wireless Sensor Network deployment","authors":"A. Tahiri, E. Egea-López, J. Vales-Alonso, J. García-Haro, M. Essaaidi","doi":"10.1109/MMS.2009.5409840","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409840","url":null,"abstract":"The deployment of wireless sensor network (WSN) forms a metric step to make the end of the desired system aim design. Deployment procedure can improve the information collected by giving more priority to the events which are more desired to be supervised; in addition, it can optimize the paths which link the network node among them as presented in this work. In this paper, we have improved the communication paths of an approach of optimal WSN deployment, in the aim to preserve the interest collected by the set of network nodes and improve the connectivity of the network.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130226943","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
Electromagnetic imaging using closed-form radiating and non-radiating currents 电磁成像使用封闭形式的辐射和非辐射电流
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409786
G. Gragnani
{"title":"Electromagnetic imaging using closed-form radiating and non-radiating currents","authors":"G. Gragnani","doi":"10.1109/MMS.2009.5409786","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409786","url":null,"abstract":"A closed-form expansion of radiating and non-radiating currents is used in an equivalent inverse source problem, in order to solve the original inverse scattering problem and provide a method for electromagnetic imaging. Preliminary numerical investigation are performed by using a mixed inverse-direct scattering approach. Simulations show the limitations related to the radiating part of the solution and the possible enhancement given by using the non-radiating part. The capabilities of this approach in achieving a good solution to an inverse scattering problem are evaluated and discussed.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128517488","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
Improving quality of service (QoS) in Multi-Protocol Label switching module 提高多协议标签交换模块的服务质量
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409779
A. Jamali, N. Naja, D. El Ouadghiri, R. Benaini
{"title":"Improving quality of service (QoS) in Multi-Protocol Label switching module","authors":"A. Jamali, N. Naja, D. El Ouadghiri, R. Benaini","doi":"10.1109/MMS.2009.5409779","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409779","url":null,"abstract":"until now, in the traditional IP network, the data packets take systematically the shortest path between two nodes through a core network. However, this system presents a major inconvenience: all the traffic follows the shortest path to go from the source to the destination. So the clutter state in a part of the network will be problematic. Today the new technology MPLS-TE permits to share the data according to the available resources in networks to guarantee the quality of service. Therefore, every packet will on label to assure a strict control according to the associated ticket, and the portion of the traffic can be deviated to some paths according to the rules of the mechanism MPLS-TE and constraints required by the operator. In this article, we modify the MPLS module, we propose MPLS-M to increase the throughput and reduce the number of lost packets.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134196651","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
Grid computing to improve performance and management of distributed electromagnetic applications 网格计算提高分布式电磁应用的性能和管理
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409814
I.J.F. Freitas, C. H. Silva-Santos, M. Hernandez, H. Hernandez Figueroa
{"title":"Grid computing to improve performance and management of distributed electromagnetic applications","authors":"I.J.F. Freitas, C. H. Silva-Santos, M. Hernandez, H. Hernandez Figueroa","doi":"10.1109/MMS.2009.5409814","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409814","url":null,"abstract":"This work presents a grid environment, based on UNICORE 6 middleware, which was used to analyze their security levels, compatibility with other middlewares and the resources available to integrate, visualize and manage different computational electromagnetic applications. The flexibility and performance of this approach is presented in two examples. Fist, a multiplatform CAD software developed in Java to design electromagnetic devices was encapsulated in this environment. The second application encapsulates a parallel FDTD 3D code developed in C++ and processed in a computer cluster. The results show the grid's high performance, efficiency, management easiness and portability, characterizing it as an important tool to share computational resources and to reuse them.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134406055","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
Investigation of residual stress effects and modeling of spring constant for RF MEMS switches 射频MEMS开关残余应力效应研究及弹簧常数建模
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409828
H. Ur Rahman, K. Y. Chan, R. Ramer
{"title":"Investigation of residual stress effects and modeling of spring constant for RF MEMS switches","authors":"H. Ur Rahman, K. Y. Chan, R. Ramer","doi":"10.1109/MMS.2009.5409828","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409828","url":null,"abstract":"Any film which is deposited during the fabrication undergoes some form of stress. It can be either a compressive stress or tensile stress. It is important to have right value of either compressive or tensile stress for the particular application. In this paper we present an investigation of the stresses generated by the gold thin film during the fabrication process of RF MEMS switches. During the fabrication of RF MEMS series switches a small value of tensile stress is intentionally generated so that beam does not lead to stiction after final release. We are also briefly presenting a new mathematical model for calculation of the spring constant of the beam structures. The method we used is based on the Euler-Bernoulli beam equations. The spring constants calculated for two new beam designs were 3.37N/m and 3.31N/m respectively.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129359927","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
A printed reconfigurable antenna for communication system 一种用于通信系统的可重构印刷天线
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409789
F. Romdhani, Mohsen Denden, A. Samet
{"title":"A printed reconfigurable antenna for communication system","authors":"F. Romdhani, Mohsen Denden, A. Samet","doi":"10.1109/MMS.2009.5409789","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409789","url":null,"abstract":"This paper presents an application of the planar model approach to the design of reconfigurable dipole antenna. The model of the whole antenna consists of a planar structure connected via a microstrip line which guarantees a continuous excitation. For this we have to use the commercial electromagnetic software ADS (Momentum) based on the method of moments (MoM) to investigate the electromagnetic behaviour of this antenna. The behavior of the resonant frequency as a function of the position and the dimension of a lumped element is studied in depth. Furthermore, the effects of finite metallization thickness and losses are also investigated in detail.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121918210","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
Comparing accuracy for ML, MUSIC, ROOT-MUSIC and spatially smoothed algorithms for 2 users 比较ML、MUSIC、ROOT-MUSIC和空间平滑算法对2个用户的精度
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409832
M. Jalali, Mohamad Naser Moghaddasi, Alireza Habibzadeh
{"title":"Comparing accuracy for ML, MUSIC, ROOT-MUSIC and spatially smoothed algorithms for 2 users","authors":"M. Jalali, Mohamad Naser Moghaddasi, Alireza Habibzadeh","doi":"10.1109/MMS.2009.5409832","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409832","url":null,"abstract":"In this article we simulate four famous algorithms in DOA and then compare the algorithms based on their finding and estmating of the accuracy level angels from two different users, having demonstrated the result of simulation of the four algorithms in comparison tables, it is observed that ROOT-MUSIC algorithm have high level of accuracy in estimation of close angles(28, 30 degrees). MUSIC, Spatially Smoothed and ML algorithms have the next steps in accuracy respectively.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125044466","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: 29
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