{"title":"Performance enhancement of space time block coded MIMO systems using training design","authors":"K. Ahmed, M. Patwary, Hongnian Yu","doi":"10.1109/ICELCE.2010.5700790","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700790","url":null,"abstract":"This paper considers the performance enhancement of orthogonal space time block coded (OSTBC) multiple-input multiple-output system based on an optimal training strategy. Pairwise error probability (PEP) based performance analysis provides us the training design tools as well as a generic expression for the performance improvement due to optimal training compared to the conventional case for OSTBC system equipped with any number of transmit and receive antennas and any modulation schemes, e.g., M-array PSK, MSK and QAM. It is observed that the linear processing in the receiver, the most attractive feature of OSTBC, although destroys the orthogonality in the presence of channel estimation error (CEE), does not reduce diversity, but, causes performance penalty as a loss of SNR due to training. This loss of performance is quantified analytically and minimized by optimal allocation of power between training and data symbols.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123610982","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}
{"title":"Design and characterization of a novel spiral photonic crystal fiber nanowire for visible range applications","authors":"D. Hasan, M. S. Alam, M. N. Hossain, K. M. Mohsin","doi":"10.1109/ICELCE.2010.5700640","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700640","url":null,"abstract":"In this paper, we have proposed a novel nanophotonic device for nonlinear applications in the visible range. The proposed device is a photonic crystal fiber nanowire composed of highly transparent silica with a germania doped silica as core material. Numerical analysis has confirmed that the proposed nonlinear device has a maximum Raman gain coefficient of 1324 W<sup>−1</sup>km<sup>−1</sup> with a nonlinearity parameter of 1144 W<sup>−1</sup>km<sup>−1</sup>. Again, the ultra-flattened dispersion slope of −0.0038 ps/nm<sup>2</sup>-km obtained at wavelength ≈ 584 nm has also validated the efficiency of dispersion control mechanism of the newly proposed spiral photonic crystal fiber structure for nonlinear applications. Later, tunability of Raman effective area and Raman interaction length has been investigated for the proposed nanowire based device in the flat dispersion region.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115299155","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}
{"title":"Electronics - what should we teach and why?","authors":"M. Rashid","doi":"10.1109/ICELCE.2010.5700554","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700554","url":null,"abstract":"The subject of electronics has developed so much over the years that the questions to be answered are: should Electronics be a one semester or two semester course, and what topics we should cover. The paper presents the issues to be considered in deciding on the course duration and the course topics.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115737843","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}
{"title":"Design of quaternary serial and parallel adders","authors":"A. Das, I. Jahangir, M. Hasan","doi":"10.1109/ICELCE.2010.5700730","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700730","url":null,"abstract":"Optimization techniques for decreasing the time and chip area of adder circuits have been thoroughly studied for years mostly in binary logic system. In this paper, we provide the necessary equations required to design a full adder in quaternary logic system. We provide the design of a logarithmic stage parallel adder which can compute the carries within log2(n) time delay for n qudits. At last, we compare the gate delays of full adder and logarithmic stage parallel using mathematical expressions.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"231 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115752428","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}
{"title":"Shielding failure analysis of 132 kV transmission line shielded by surge arresters associated with multiple strokes lightning","authors":"D. Caulker, H. Ahmad, Z. A. Malek, S. Yusof","doi":"10.1109/ICELCE.2010.5700687","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700687","url":null,"abstract":"Analysis of shielding failure is carried out to observe flashover of insulators parallel with phase conductors of a transmission line associated with a lightning strike on phase conductor. Peak current of different magnitude have been used to represent the multiple strokes lightning (MSL). This paper aims to simulate the worst case due to transmission shielding failure with three direct strikes to a line phase conductor of magnitudes 25 kA, 35kA, 50kA, 65 kA and 80kA per strike respectively. Insulators where flashover had occurred with respect to MSL were identified. Installation of an arrester on a phase insulator where a flashover has occurred proven to be useful mitigation technique thatch could prevent flashover of the insulator and also improves lighnting performance of the line.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123244071","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}
{"title":"Daubechies wavelet decomposition based baseline wander correction of trans-abdominal maternal ECG","authors":"S. R. Chowdhury, Dipankar Chakrabarti","doi":"10.1109/ICELCE.2010.5700772","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700772","url":null,"abstract":"The paper presents an improved morphological approach for baseline wander correction in trans-abdominal electrocardiogram (ECG) signals, with emphasis on preserving all required clinical information of the original signal. The algorithm consists of morphological processing of sampled ECG signal using 9th order Daubechies wavelet transform. The morphological operators are applied to extract the baseline drift of the trans-abdominal ECG signal of a pregnant subject. The baseline signal is then subtracted from the input signal to leave a baseline normalized signal. The proposed algorithm has been successfully applied on the trans-abdominal ECG of a pregnant subject where the ECG signal has suffered considerable baseline drift due to excessive respiration as well as skeletal muscular contraction. For a quantitative validation of the estimation procedures, 10 ECG with artificial baseline drift were constructed and analyzed by correlation and mean square error calculations. Using the proposed 9th order Daubechies wavelet decomposition technique, the mean square error after baseline correction has been found to be less than 1%. Compared with all existing morphological methods, there is a substantial improvement in reducing distortion of the baseline waveform in any part of the signal.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117002059","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}
{"title":"An RF based centrifuge calibrator for MEMS accelerometer testing","authors":"Rajesh L. Zadfiya, S. M, S. Sen","doi":"10.1109/ICELCE.2010.5700716","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700716","url":null,"abstract":"In recent years, MEMS accelerometers are being used on an increasing scale in different spheres of science and technology. Proper testing and calibration of these devices is as vital as that of its design and fabrication. The present paper details with the construction of a centrifuge equipment to be used in static testing of MEMS accelerometers. This is based on a conventional rotating platform generating constant acceleration of very low frequency but using a wireless communication to transceive the test data in a continuous mode. Stage by stage construction of the equipment is detailed and compared with the conventional long arm rotating table type with slip rings and wired data transmission. Finally, a trial testing of the equipment is carried out using a commercially available accelerometer with known specifications and the experimental data is compared with the theory. Criticality of possible error sources are also briefly discussed in the end.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129631147","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}
M. S. Islam, S. Muhtadi, A. G. Bhuiyan, A. Hashimoto, A. Yamamoto
{"title":"Charge control studies for an AlInN/InN heterojunction field effect transistor without and with oxide layer","authors":"M. S. Islam, S. Muhtadi, A. G. Bhuiyan, A. Hashimoto, A. Yamamoto","doi":"10.1109/ICELCE.2010.5700662","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700662","url":null,"abstract":"This paper describes a novel AlInN/InN heterojunction field effect transistor (HFET) without and with an oxide layer for high performance. A charge control model based on the self-consistent solution of one dimensional Schrodinger-Poisson equations is developed. The model takes into account the highly dominant spontaneous and piezoelectric polarization effects to predict the two dimensional electron gas (2DEG) sheet density more accurately at the heterointerface. The band profile is calculated for the first two sub band energy for In mole fraction of m = 0.1. A large conduction band offset of about 2.77eV is found, which ensure the better confinement and higher sheet charge density. An extremely high two dimensional electron sheet density of 1.21×1014 cm−2 is calculated at the hetero interface for In content of 0.1, while those using an oxide layer beneath the gate the 2DEG changes to be 1.99×1014 cm−2. It is increased by almost one order of magnitude as compared to ∼1×1013 cm−2 obtained in a conventional GaN-based heterostructure. This analysis is expected to provide powerful means to evaluate the performance of AlInN/InN heterostructure field effect transistors and to optimize their design.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130385545","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}
{"title":"Mathematical modeling of the heart","authors":"Muhammad Shoaib, M. A. Haque, M. Asaduzzaman","doi":"10.1109/ICELCE.2010.5700771","DOIUrl":"https://doi.org/10.1109/ICELCE.2010.5700771","url":null,"abstract":"This paper presents a new mathematical model of the human heart. Heart is the mother component of the cardiovascular system that consists of four chambers and it is responsible for collecting blood from different parts of the body and pumping the required blood throughout the body. Although blood is the non-Newtonian fluid, in many cases it behaves like a Newtonian fluid which is governed by the Navier-Stokes equations. With the help of continuity equation and the Navier-Stokes equations, a simple differential equation was derived under some assumption which is called as the master equation. Then by applying the logical assumption on this master equation, the general mathematical model of the normal heart was developed. From the graphical analysis, the heart rate at the normal condition was estimated. At the end of this study, some analysis had been performed whether the proposed model can represents the different heart abnormalities like heart blockage, leakage etc. The analysis showed that the model can satisfy both the normal and abnormal condition of the heart.","PeriodicalId":202650,"journal":{"name":"International Conference on Electrical & Computer Engineering (ICECE 2010)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129224385","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}