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2009 Mediterrannean Microwave Symposium (MMS)最新文献

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Turbo packet combining for broadband MIMO relay communication 宽带MIMO中继通信的Turbo分组组合
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409772
T. Ait-Idir, H. Chafnaji, H. Yanikomeroglu, S. Saoudi
{"title":"Turbo packet combining for broadband MIMO relay communication","authors":"T. Ait-Idir, H. Chafnaji, H. Yanikomeroglu, S. Saoudi","doi":"10.1109/MMS.2009.5409772","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409772","url":null,"abstract":"In this paper, we provide a survey of cooperative automatic repeat request (ARQ) protocols for multi-relay systems operating over multiple-input-multiple-output (MIMO) broadband channels. We study three main operating modes: amplify-and-forward (AF), decode-and-forward (DF), and positive/negative acknowledgment (ACK/NACK)-aided DF. We describe efficient minimum mean square error (MMSE) frequency domain equalization (FDE) iterative turbo packet combining techniques for cooperative ARQ, and show that they outperform conventional log-likelihood ratio (LLR)-based turbo combining.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132635157","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
Electromagnetic scattering from Conical Horn analysis using wavelet-based moment method 基于小波矩法的圆锥角电磁散射分析
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409800
M. Lashab, F. Benabdelaziz, C. Zebiri
{"title":"Electromagnetic scattering from Conical Horn analysis using wavelet-based moment method","authors":"M. Lashab, F. Benabdelaziz, C. Zebiri","doi":"10.1109/MMS.2009.5409800","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409800","url":null,"abstract":"In this paper Conical horn Antenna has been analyzed by two methods, the first one is an asymptotic one which is the aperture integration based on the geometrical optics (GO), the second one is a numerical method based on the well known moment method and improved by wavelets. In this work we intend first to introduce the application of wavelet in electromagnetic scattering, then a comparison of the two method of analysis is presented to show the limit of use of the asymptotic method and to emphasize on the fact that moment method is an exact method which is improved by the introduction of wavelet by reduction of both memory space and processing time, this is well presented and compared with different type wavelets.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114616794","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
5-GHz low phase noise CMOS LC-VCO with PGS inductor suitable for ultra-low power applications 具有PGS电感的5 ghz低相位噪声CMOS LC-VCO适用于超低功耗应用
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409799
A. Oualkadi
{"title":"5-GHz low phase noise CMOS LC-VCO with PGS inductor suitable for ultra-low power applications","authors":"A. Oualkadi","doi":"10.1109/MMS.2009.5409799","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409799","url":null,"abstract":"A fully integrated LC-VCO fabricated in 0.13 µm CMOS technology is presented in this paper. The VCO achieves a wide tuning range of 31.43 % (from 3.841 GHz to 5.381 GHz). The measured phase noise is −120.63 dBc/Hz at 1 MHz offset from the carrier at 5.287 GHz. The current dissipation of the VCO is 1.32 mA from the 1.5 V power supply. The VCO figure of merit is greater than 190 placing this design among the top of the state-of-the-art.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132296261","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
Study and proposal of a mapping between the classes of 3G services and DiffServ model for IP/MPLS transport network IP/MPLS传输网络中3G业务类与DiffServ模型映射的研究与建议
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409769
Mariam Jaifar, M. Moussaoui
{"title":"Study and proposal of a mapping between the classes of 3G services and DiffServ model for IP/MPLS transport network","authors":"Mariam Jaifar, M. Moussaoui","doi":"10.1109/MMS.2009.5409769","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409769","url":null,"abstract":"The establishment of All-IP architecture is today, a major challenge to many telecommunications operators. This is a necessary passage towards the world of simplicity and convergence offered by new technologies and those to come. In this article, we show that the current evolution of communications networks tends towards the adoption of IP technology and QoS support from end to end. In this context, we demonstrate that IP / MPLS networks need to have a QoS architecture sufficiently mature to support the management of priority in terms of delay, jitter and loss rate required by the services. Thus, we propose a mapping between the classes of services 3G and the DiffServ model for transport IP/MPLS network, and prove the excellence of quality guaranteed network.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128737344","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
FDTD study of surface plasmons and perfect tunneling of power in parallel-plate waveguides 平行板波导中表面等离子体的时域有限差分研究及功率的完美隧穿
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409807
O. González, A. Grande, J. Pereda, Á. Vegas
{"title":"FDTD study of surface plasmons and perfect tunneling of power in parallel-plate waveguides","authors":"O. González, A. Grande, J. Pereda, Á. Vegas","doi":"10.1109/MMS.2009.5409807","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409807","url":null,"abstract":"Perfect tunneling of power through waveguides can be achieved by taking advantage of surface plasmon conditions. A few years ago, a waveguide filled by metamaterials with negative parameters was proposed in order to achieve such perfect tunneling behaviour. The aim of this communication is to both analyze and visualize in the time domain a structure presenting both a plasmonic resonance and perfect tunneling behaviour. This work is carried out by using the Finite Difference Time Domain (FDTD) formulation presented in. As shown here, a waveguide filled with a dispersive material is necessary, but it is not mandatory for this material to be DNG. In addition, the main advantage of the FDTD formulation used here is that it is able to directly incorporate any arbitrary high-order frequency dependence of the constitutive parameters, allowing a realistic characterization of high-order dispersive materials.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131173600","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
Novel microwave planar bandpass filter structures with strongly asymmetric characteristics 具有强不对称特性的新型微波平面带通滤波器结构
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 2009-11-01 DOI: 10.1109/MMS.2009.5409843
G. Lojewski, N. Militaru, M. Banciu
{"title":"Novel microwave planar bandpass filter structures with strongly asymmetric characteristics","authors":"G. Lojewski, N. Militaru, M. Banciu","doi":"10.1109/MMS.2009.5409843","DOIUrl":"https://doi.org/10.1109/MMS.2009.5409843","url":null,"abstract":"In this paper the problem of designing simple low-cost planar microwave bandpass filters with strongly asymmetric characteristics, filters that can very efficiently attenuate one of the two adjacent channels, is investigated. In case of a fourth-order filter, the usual quadruplet structure leads to two transmission zeros located one on each side of the passband, but higher attenuation can be obtained for one of the two adjacent channels by designing filters with two transmission zeros in the same (upper or lower) stopband. The new topology investigated in this paper offers the possibility of designing such quadruplets with two transmission zeroes situated both on the same side of the passband, in prescribed and controlled positions. Filters with this novel structure can provide very high attenuation not only at a single frequency, but in a larger adjacent frequency band.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115109454","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
A flat gain low noise amplifier for 1.8 to 4GHz wide band wireless receivers 一种用于1.8至4GHz宽带无线接收器的平坦增益低噪声放大器
2009 Mediterrannean Microwave Symposium (MMS) Pub Date : 1900-01-01 DOI: 10.1109/mms.2009.5409765
M. Meloui, I. Akhchaf, H. Setti, M. Charif, M. Essaaidi
{"title":"A flat gain low noise amplifier for 1.8 to 4GHz wide band wireless receivers","authors":"M. Meloui, I. Akhchaf, H. Setti, M. Charif, M. Essaaidi","doi":"10.1109/mms.2009.5409765","DOIUrl":"https://doi.org/10.1109/mms.2009.5409765","url":null,"abstract":"This paper presents a design technique for a low-noise amplifier for the 1.8–4 GHz ultra wideband (UWB) wireless receivers. The LNA uses a circuit topology consisting of one gain stage with series inductor feedback using ATF technology and it is operated at 1 V. The noise figure of this LNA varies from 3 to 1.5 dB, and its gain is very flat 10 dB throughout frequency band spanning from 1.8 to 4 GHz. These results were obtained using Agilent ADS commercial simulator and confirmed with Ansoft designer utilizing ATF-10136 amplifier technology.","PeriodicalId":300247,"journal":{"name":"2009 Mediterrannean Microwave Symposium (MMS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115393820","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
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