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Channel capacity and Bit Error Rate analysis of non-uniform type M-ary optical CDMA in presence of Self Phase Modulation and dispersion 存在自相位调制和色散的非均匀型M-ary光CDMA信道容量和误码率分析
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026833
Rashad Kabir, M. M. Haque, M. Rahaman
{"title":"Channel capacity and Bit Error Rate analysis of non-uniform type M-ary optical CDMA in presence of Self Phase Modulation and dispersion","authors":"Rashad Kabir, M. M. Haque, M. Rahaman","doi":"10.1109/ICECE.2014.7026833","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026833","url":null,"abstract":"The Bit Error Rate(BER) and theoretical channel capacity of OCDMA transmission has been analyzed in this paper for M-ary chip symbol. A comparison has also been made between uniform and non-uniform signalling and the result shows that channel capacity is increased for the same number of active users if the modulation level or bits per OCDMA symbol is increased for non-uniform. Finally SNR and BER simulation result has been shown for both uniform and non-uniform M-ary OCDMA transmission system in presence of Self Phase Modulation and dispersion. The simulation result shows that unlike conventional OCDMA system better performance can be achieved using M-ary Chip Symbol.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115463371","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: 2
Wide speed range operation of PMSM drives using nonlinear flux control techniques 采用非线性磁链控制技术实现永磁同步电机的宽调速范围运行
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026857
Garin M. Schoonhoven, M. Uddin
{"title":"Wide speed range operation of PMSM drives using nonlinear flux control techniques","authors":"Garin M. Schoonhoven, M. Uddin","doi":"10.1109/ICECE.2014.7026857","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026857","url":null,"abstract":"This paper presents a nonlinear flux controller based wide speed operation of permanent magnet synchronous motor (PMSM) drive. An adaptive backstepping based nonlinear controller is developed to get the control laws while maintaining systems stability. For the nonlinear controller the flux is controlled based on maximum torque per ampere (MTPA) and flux weakening (FW) techniques for below and above the rates speed, respectively. The global asymptotic stability of the drive is demonstrated by Lyapunov stability criterion in conjuncture with Barbalat's lemma. The system nonlinearities are also accommodated through the online estimation of critical parameters. The proposed nonlinear flux controller based PMSM drive is investigated in simulation using MATLAB/Simulink software. The global stability and robustness of the driver are verified through simulation results.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116558078","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: 2
State space least mean square for state estimation of synchronous motor 同步电机状态估计的状态空间最小均方算法
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026885
Arif Ahmed, M. Moinuddin, U. M. Al-Saggaf
{"title":"State space least mean square for state estimation of synchronous motor","authors":"Arif Ahmed, M. Moinuddin, U. M. Al-Saggaf","doi":"10.1109/ICECE.2014.7026885","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026885","url":null,"abstract":"Kalman filter and its variants are well known for the static and dynamic state estimation of power systems because of their accuracies. These adaptive filters generally employed for estimation purposes require high computational power when it comes to real time estimation. Therefore, in this paper we propose a computationally light yet effective estimation algorithm based on state space model which have not yet been applied to the problem of power system estimation. We propose the use of state space least mean square algorithms for the purpose of state estimation considering the problem of a two phase permanent magnet synchronous motor. The algorithms have been employed successfully in this paper in the state estimation of the highly non linear synchronous motor. We investigate the problem in the presence of Gaussian noise to show the novelty of the algorithms. Moreover, these algorithms are compared with the state estimation performance of the non linear Extended Kalman filter.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122030874","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
Uncoupled mode space approach towards transport modeling of Gate-All-Around InxGa1−xAs nanowire MOSFET 栅极全能InxGa1−xAs纳米线MOSFET输运建模的非耦合模式空间方法
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026963
S. Khan, M. S. Hossain, F. Rahman, R. Zaman, M. O. Hossen, Q. Khosru
{"title":"Uncoupled mode space approach towards transport modeling of Gate-All-Around InxGa1−xAs nanowire MOSFET","authors":"S. Khan, M. S. Hossain, F. Rahman, R. Zaman, M. O. Hossen, Q. Khosru","doi":"10.1109/ICECE.2014.7026963","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026963","url":null,"abstract":"Since the fabrication of first III-V Gate-All-Around (GAA) MOSFET it is under extensive research, as it is one of the potential candidates to replace the state of art tri-gate FinFETs, to continue progressive scaling. In this work, transport characterization of experimentally demonstrated gate-all-around (GAA) InxGa1-xAs nanowire MOSFET in near-ballistic regime is performed using 3D self-consistent Schrödinger-Poisson solver based on Uncoupled Mode Space approach, taking wave function penetration and other quantum mechanical effects into account. The effects of channel length variation on transport characteristics are also examined.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122072691","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
A miniaturized spiral antenna for energy harvesting of implantable medical devices 一种用于可植入医疗设备能量采集的小型螺旋天线
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026880
Qingyun Ma, Laxmi Ray, M. Haider
{"title":"A miniaturized spiral antenna for energy harvesting of implantable medical devices","authors":"Qingyun Ma, Laxmi Ray, M. Haider","doi":"10.1109/ICECE.2014.7026880","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026880","url":null,"abstract":"In this paper, a wireless power transfer system for implantable medical devices using a miniaturized 3 mm diameter single arm circular spiral antenna is presented. The transmission characteristics, S21 between the transmitting and receiving antennas with air and tissue as a medium between antennas are analyzed and measured. The receiver antenna receives almost 2 mW average power with power transfer efficiency of 53%. The power transfer efficiency could still reach to 4% with 274 μW average received power, with placement of 1.5 cm tissue and 1 cm air in between two antennas. With one PN diode rectifier, the total DC power from the receiver side is 489 nW.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123963507","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: 2
Prospects of Zinc Sulphide as an alternative buffer layer for CZTS solar cells from numerical analysis 从数值分析看硫化锌作为CZTS太阳能电池备选缓冲层的前景
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026855
F. Haque, N. Khan, K. S. Rahman, M. Islam, M. Alam, K. Sopian, N. Amin
{"title":"Prospects of Zinc Sulphide as an alternative buffer layer for CZTS solar cells from numerical analysis","authors":"F. Haque, N. Khan, K. S. Rahman, M. Islam, M. Alam, K. Sopian, N. Amin","doi":"10.1109/ICECE.2014.7026855","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026855","url":null,"abstract":"Zinc Sulphide (ZnS) is a promising candidate to be an alternative buffer layer to the commonly used cadmium sulphide (CdS) in CZTS solar cells. In this study, buffer layer parameters like layer thickness and buffer layer bandgap have been investigated by Analysis of Microelectronic and Photonic Structures (AMPS-1D) to find out the higher conversion efficiency. A promising result has been achieved with an efficiency of 14.49% (with Voc = 0.81 V, Jsc = 28.85 mA/cm2 and Fill factor = 67.5) by using ZnS as a buffer layer. It is also found that the high efficiency of CZTS absorber layer thickness is between 2 μm and 4 μm. From the simulation results, it is revealed that higher efficiency can be achieved for the buffer layer bandgap around 3.10 eV - 3.25 eV. This result can be explained by the practical work as the bandgap of ZnS is largely dependent on the preparation conditions and stoichiometry. In conclusion, numerous influences of buffer layer are investigated in CZTS solar cell that can lead to the fabrication of high efficiency devices.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128319504","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: 12
A novel DCSK communication scheme for PLCC based DAS 一种新的基于PLCC的DAS DCSK通信方案
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026839
S. Sarkar, P. Kundu
{"title":"A novel DCSK communication scheme for PLCC based DAS","authors":"S. Sarkar, P. Kundu","doi":"10.1109/ICECE.2014.7026839","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026839","url":null,"abstract":"With the increasing popularity of power line communication technologies, modifications over Spread Spectrum Technologies were made so as to develop a suitable alternative for power line communication. Differential Code Shift Keying (DCSK) is one such technology developed by Yitran Technologies & patented on May 16th, 2000. In this paper, it is proposed to develop this DCSK Communication Scheme which can be used for PLCC system for DAS application.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128671056","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
Achieving tetra band performance in simple dielectric and in metamaterial filled patch antennas 在简单介质和超材料填充贴片天线中实现四频带性能
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026847
Abdullah Al Noman Ovi, M. Mahdy, MD Zuboraj, Ayed Al Sayem, M. Ababil Hossain, M. Matin
{"title":"Achieving tetra band performance in simple dielectric and in metamaterial filled patch antennas","authors":"Abdullah Al Noman Ovi, M. Mahdy, MD Zuboraj, Ayed Al Sayem, M. Ababil Hossain, M. Matin","doi":"10.1109/ICECE.2014.7026847","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026847","url":null,"abstract":"In this contribution, we have proposed a robust technique to achieve tetra-band performance in both conventional dielectric (elliptical shape) and also metamaterial loaded (rectangular shape) patch antennas. Incorporation of symmetric slots over the patch in both type of antennas have been shown here by using the concept of additional modified modes and perturbation approach. At first, we have shown that if and only if, elliptical shape patch antenna is properly optimized along with symmetrical slots over metallic patch, it is possible to achieve satisfactory four- band performance without the aid of any complex procedure currently present in literature. Later, we have reported a compact metamaterial loaded tetra band rectangular patch antenna to achieve extremely high gain and directivity performances for all the four bands, which may not be possible with conventional dielectric antennas.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128803010","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
Control of reflection through epsilon near zero graphene based anisotropic metamaterial 通过epsilon近零石墨烯基各向异性超材料控制反射
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026851
Ayed Al Sayem, Arif Shahriar, M. Mahdy, Md. Saifur Rahman
{"title":"Control of reflection through epsilon near zero graphene based anisotropic metamaterial","authors":"Ayed Al Sayem, Arif Shahriar, M. Mahdy, Md. Saifur Rahman","doi":"10.1109/ICECE.2014.7026851","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026851","url":null,"abstract":"In graphene dielectric multilayer structure, a very interesting phenomena such as epsilon near zero property rises naturally. However, this epsilon near zero property (along with the proper control of chemical potential and gate voltage) of graphene multi-layer stack has not been used so far to make novel photonic switches. In this article, we have shown theoretically that in graphene-dielectric stack, which acts as an anisotropic metamaterial, full control of reflection and so transmission of light at a specific wavelength or frequency can be controlled very simply by external gate voltage. This external voltage tunes the chemical potential and so the parallel permittivity of the anisotropic structure. Our theoretical prediction may pave the way to novel voltage control photonic logic switches, which may play as an intermediate solution before entering into all optical commercial switches (as current silicon and electron based CMOS technology is facing a dead end).","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129513760","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: 15
Mobile interactive problem solving for active teaching and learning 移动互动解决问题，主动教与学
8th International Conference on Electrical and Computer Engineering Pub Date : 2014-12-01 DOI: 10.1109/ICECE.2014.7026849
M. Fuad, D. Deb, Shequi'lla Whitaker
{"title":"Mobile interactive problem solving for active teaching and learning","authors":"M. Fuad, D. Deb, Shequi'lla Whitaker","doi":"10.1109/ICECE.2014.7026849","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026849","url":null,"abstract":"In traditional classroom setting, lecturing is the prominent method of transferring knowledge to students. However this passive mode of instruction does not keep student engaged and interested longer in the class. Although mobile devices are used extensively in everyday life and have a bad reputation of creating distraction during class, it can be used to make student's class participation more interactive and engaging. This paper presents one such approach, which is fundamentally different than existing ones by allowing students to participate in active learning during class session by using their mobile devices. This research envision interactive problem applications which will run in student mobile devices, which faculty can initiate remotely and where student can actively participate to solve problem in a hands-on manner. This paper presents the development of a Karnaugh map interactive mobile application and its incorporation into Mobile Response System.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127092856","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
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