2009 3rd International Conference on Signals, Circuits and Systems (SCS)最新文献_第7页

Losses minimisation in an induction motor 感应电动机的损耗最小化

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412525

D. Mehdi, S. Lassâad

引用次数: 3

Resource allocation algorithm in downlink of OFDMA systems based on users' classification and superposition coding 基于用户分类和叠加编码的OFDMA下行链路资源分配算法

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412685

Hichem Besbes, S. Najeh, A. Jdidi, S. Smirani

{"title":"Resource allocation algorithm in downlink of OFDMA systems based on users' classification and superposition coding","authors":"Hichem Besbes, S. Najeh, A. Jdidi, S. Smirani","doi":"10.1109/ICSCS.2009.5412685","DOIUrl":"https://doi.org/10.1109/ICSCS.2009.5412685","url":null,"abstract":"In this paper, we propose a simple proportional fairness resource allocation technique for downlink OFDMA system, by re-arranging the set of users into four classes and setting different priority order. The classes are obtained according to buffers states and channels conditions. We offer priority to users having a delay sensitive traffic by considering those who have the fullest buffer and good channel conditions. Moreover, we propose to use the superposition coding technique to increase the system capacity. In fact, we will allow a degraded user (having bad channel condition) and a potential user (having good channel condition) to share the same subcarrier. At the degraded user side, the receiver will proceed as usual and will consider the information sent to the potential user as an additive noise. At the potential user side, a successive decoding process will be adopted. To avoid error propagation, which can occur in this case, the amount of transmitted power to each user will be optimized accordingly. A suboptimal resource allocation algorithm, based on the mentioned superposition scheme and users classification, is derived. Simulation results confirm that the proposed technique offers a proportional fairness allocation and outperforms the classical algorithms in terms of total throughput.","PeriodicalId":126072,"journal":{"name":"2009 3rd International Conference on Signals, Circuits and Systems (SCS)","volume":"118 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":"129994849","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

Power and delay comparison of binary and quaternary arithmetic circuits 二进制和四元算术电路的功率和延迟比较

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412586

C. Lazzari, P. Flores, J. Monteiro

引用次数: 8

Blind channel shortening algorithm based on correlation property of multicarrier signals 基于多载波信号相关特性的盲信道缩短算法

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412609

E. Ben Salem, Hichem Besbes, S. Cherif, Roberto López-Valcarce

引用次数: 0

On the design of Doppler filters for next generation radio channel simulators 下一代无线电信道模拟器的多普勒滤波器设计

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412700

Jamshaid Sarwar Malik, A. Hemani

引用次数: 6

Cross layer strategies in wireless networks 无线网络中的跨层策略

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412580

R. Bahloul, H. Boujemaa, M. Siala

引用次数: 2

Effect of domain boundaries on dielectric properties of lanthanide oxide based gate dielectrics 畴边界对氧化镧基栅极电介质介电性能的影响

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5414203

A. Laha, E. Bugiel, J. X. Wang, H. Osten, A. Fissel

{"title":"Effect of domain boundaries on dielectric properties of lanthanide oxide based gate dielectrics","authors":"A. Laha, E. Bugiel, J. X. Wang, H. Osten, A. Fissel","doi":"10.1109/ICSCS.2009.5414203","DOIUrl":"https://doi.org/10.1109/ICSCS.2009.5414203","url":null,"abstract":"In this work, impact of domain boundaries on dielectric properties of epitaxial Gd2O3 thin films grown on Si(001) substrates with 4° miscut along [110] azimuth were studied. Epitaxial Gd2O3 layers with and without domain boundaries could be prepared on same Si(001) substrates with 4° miscut when the surface is prepared under special condition prior to the layer growth. A miscut substrate surface with terraces of biatomic steps height could be the crucial point to be succeeded to grow single domain epitaxial Gd2O3 layer. Epi-Gd2O3 layers without any domain boundaries exhibited significantly lower leakage currents compare to that commonly obtained epitaxial layers with two orthogonal domains. However, for capacitance equivalent thickness below 1 nm, the differences disappear, indicating that for ultra thin layers direct tunneling becomes dominant conduction mechanism. Additionally, a forming gas annealing treatment on these samples could further reduce the leakage current by few orders of magnitudes irrespective of their structure. Here, thinner layers of both structural types exhibited similar electrical properties.","PeriodicalId":126072,"journal":{"name":"2009 3rd International Conference on Signals, Circuits and Systems (SCS)","volume":"25 3 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":"123220725","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

Dynamic complex task allocation in multisensor surveillance systems 多传感器监控系统中的动态复杂任务分配

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412436

Ahmed M. Elmogy, A. Khamis, F. Karray

引用次数: 9

SAW-properties of langasite at high temperatures: Measurement and analysis 高温下langasite的saw性质:测量与分析

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5414173

I. Shrena, D. Eisele, E. Mayer, L. Reindl, J. Bardong, M. Schmitt

{"title":"SAW-properties of langasite at high temperatures: Measurement and analysis","authors":"I. Shrena, D. Eisele, E. Mayer, L. Reindl, J. Bardong, M. Schmitt","doi":"10.1109/ICSCS.2009.5414173","DOIUrl":"https://doi.org/10.1109/ICSCS.2009.5414173","url":null,"abstract":"The measurement range of temperature using SAW-devices is depending on the substrate material used in the measurements. This dependence is related to the temperature point, where the substrate loses its piezoelectric properties. This occurs by the SAW-materials such as quartz and lithium niobate at about 570°C or 350°C, respectively. The piezoelectric material langasite (La3Ga5SiO14) has a thermodynamically stable phase and do not lose its piezoelectric properties up to its melting point at about 1470 °C and can be used for SAW devices at high temperatures. This paper presents the measurements of acoustical parameters of langasite up to 750°C. Langasite is used as substrate in the measurements with Euler angles (0°, 138.5°, 26.6°) and two different platinum (Pt) layer heights (45 nm and 75 nm) top of a zirconium (Zr) adhesion layer (4 nm). The investigated acoustic properties of langasite are group and phase velocity, propagation loss, and electromechanical coupling coefficient as functions of temperature. The measured data is analyzed using a special signal processing algorithm to obtain these acoustic properties of the Langasite.","PeriodicalId":126072,"journal":{"name":"2009 3rd International Conference on Signals, Circuits and Systems (SCS)","volume":"16 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":"131496501","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: 9

Detection and tracking of pedestrians in infrared images 红外图像中行人的检测与跟踪

2009 3rd International Conference on Signals, Circuits and Systems (SCS) Pub Date : 2009-11-01 DOI: 10.1109/ICSCS.2009.5412297

Daniel Olmeda, A. de la Escalera, J. M. Armingol

引用次数: 18