Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019408
Mukesh Kant Tripathi, V. Sehgal
Nowadays cloud computing receiving a great deal of attention. Cloud computing is a subscription based service which offers dynamic, scalable, shared and elastic resources like storage, softwares, computing power etc. from by remote cloud data centers to the customers like government authority, business organizations, individuals etc. Trust is an important factor in cloud computing. The facilities provide by cloud computing is too attractive for customers but it has a distributed and non-transparent nature due to this there may be some obstacles in using cloud computing services, because users lose their control over data and they are not sure about whether cloud providers can be trusted or not. They are confused with cloud providers regarding trust issue. This paper mainly focuses on inter-clouds for establishing trust in cloud computing environment. The aim is to promote the use of inter-clouds in cloud computing environment.
{"title":"Establishing trust in cloud computing security with the help of inter-clouds","authors":"Mukesh Kant Tripathi, V. Sehgal","doi":"10.1109/ICACCCT.2014.7019408","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019408","url":null,"abstract":"Nowadays cloud computing receiving a great deal of attention. Cloud computing is a subscription based service which offers dynamic, scalable, shared and elastic resources like storage, softwares, computing power etc. from by remote cloud data centers to the customers like government authority, business organizations, individuals etc. Trust is an important factor in cloud computing. The facilities provide by cloud computing is too attractive for customers but it has a distributed and non-transparent nature due to this there may be some obstacles in using cloud computing services, because users lose their control over data and they are not sure about whether cloud providers can be trusted or not. They are confused with cloud providers regarding trust issue. This paper mainly focuses on inter-clouds for establishing trust in cloud computing environment. The aim is to promote the use of inter-clouds in cloud computing environment.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125720075","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019279
Tangudu Ramji
Current wireless distributed computing (WDC) system has one of the major factors is latency. There has a demand for power efficiency, reliable in its communication system. These demands under fading channel conditions give stupendous challenges to WDC system over traditional distributed computing system. In this paper, the objective is to minimize the latency. Where constraints are considered as power efficiency and accuracy in huge data rate transmitting and receiving. I propose OFDMA based WDC system, to achieve the zero interference. This paper uses an evolutionary method, called the particle swarm optimization (PSO). This algorithm gives global optimum solution to above specified objective function with particularized constraints. The performance of proposed system with enumerated algorithm is analyzed using computer simulation.
{"title":"Latency optimization and power efficiency with higher transmission data rate in OFDMA based wireless distributed computing system","authors":"Tangudu Ramji","doi":"10.1109/ICACCCT.2014.7019279","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019279","url":null,"abstract":"Current wireless distributed computing (WDC) system has one of the major factors is latency. There has a demand for power efficiency, reliable in its communication system. These demands under fading channel conditions give stupendous challenges to WDC system over traditional distributed computing system. In this paper, the objective is to minimize the latency. Where constraints are considered as power efficiency and accuracy in huge data rate transmitting and receiving. I propose OFDMA based WDC system, to achieve the zero interference. This paper uses an evolutionary method, called the particle swarm optimization (PSO). This algorithm gives global optimum solution to above specified objective function with particularized constraints. The performance of proposed system with enumerated algorithm is analyzed using computer simulation.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128778311","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019287
M. Anitha, G. Ananthi
This paper deals with performance analysis such as outage probability and transmission capacity of Multiple Input Multiple Output (MIMO) ad-hoc network with channel state information at transmitter (CSIT). Network formed by scattering a fixed and finite number of nodes in a given area. This type of nodal arrangement is a Binomial point process (BPP) where area or volume of deployment is finite and number of nodes in disjoint sets is dependent. In this paper, Transmit Beamforming is used at the transmitter, while the receiver uses partial zero forcing to cancel certain interferers using some of its spatial receive degrees of freedom (SRDOF) with CSIT case. The distribution of internode distance is characterized in a Binomial network where the number of nodes is independently distributed. Using this binomial distribution, the Euclidean distance is derived to design outage probability that provide the upper bound and lower bound on the transmission capacity of an ad-hoc network. The simulation results and theoretical results are presented in lieu of validating results.
{"title":"MIMO ad hoc networks with CSIT in a Binomial field","authors":"M. Anitha, G. Ananthi","doi":"10.1109/ICACCCT.2014.7019287","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019287","url":null,"abstract":"This paper deals with performance analysis such as outage probability and transmission capacity of Multiple Input Multiple Output (MIMO) ad-hoc network with channel state information at transmitter (CSIT). Network formed by scattering a fixed and finite number of nodes in a given area. This type of nodal arrangement is a Binomial point process (BPP) where area or volume of deployment is finite and number of nodes in disjoint sets is dependent. In this paper, Transmit Beamforming is used at the transmitter, while the receiver uses partial zero forcing to cancel certain interferers using some of its spatial receive degrees of freedom (SRDOF) with CSIT case. The distribution of internode distance is characterized in a Binomial network where the number of nodes is independently distributed. Using this binomial distribution, the Euclidean distance is derived to design outage probability that provide the upper bound and lower bound on the transmission capacity of an ad-hoc network. The simulation results and theoretical results are presented in lieu of validating results.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122207314","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019310
M. Sweety, G. Jiji
Alzheimer's disease (AD) is a disease that attacks the brain which worsens as it progresses and it eventually lead to the death. This paper is based on the proposed technique Particle swarm optimization (PSO) for feature reduction and Decision Tree Classifier for classification. Earlier detection of AD is carried out in 3 phases. In the first phase, features such as eigen vectors, eigen brain, mean, variance, skewness, kurtosis, standard deviation, area, perimeter, eccentricity are extracted from MRI Images. In the second phase, feature reduction is carried out by Particle swarm optimization(PSO) and in third phase, Decision Tree Classifier is used to detect whether the brain image is affected by the Alzheimer disease or not. The proposed work is also compared with earlier works.
{"title":"Detection of Alzheimer disease in brain images using PSO and Decision Tree Approach","authors":"M. Sweety, G. Jiji","doi":"10.1109/ICACCCT.2014.7019310","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019310","url":null,"abstract":"Alzheimer's disease (AD) is a disease that attacks the brain which worsens as it progresses and it eventually lead to the death. This paper is based on the proposed technique Particle swarm optimization (PSO) for feature reduction and Decision Tree Classifier for classification. Earlier detection of AD is carried out in 3 phases. In the first phase, features such as eigen vectors, eigen brain, mean, variance, skewness, kurtosis, standard deviation, area, perimeter, eccentricity are extracted from MRI Images. In the second phase, feature reduction is carried out by Particle swarm optimization(PSO) and in third phase, Decision Tree Classifier is used to detect whether the brain image is affected by the Alzheimer disease or not. The proposed work is also compared with earlier works.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116924890","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019324
D. Pradeepkannan, S. Sathiyamoorthy
Conventional PID controller is a well known controller used in almost all process Industries for controlling the process parameters at desired set value. The tuning of these controllers is done by a classical Zeigler Nichols (ZN) tuning. As the process tanks are connected in an interacting mode, there exhibits a highly nonlinear dynamic behavior and time delays between the inputs and outputs. The ZN tuned PID controller parameters does not cope with all operating points as it exhibits different non linear characteristics at various operating points. This paper aims at real time implementation of enhanced PID controller performance for a nonlinear coupled spherical tank process. The methodology followed in this paper is to keep the ZN tuned PID values as the base value so as to fine tune these parameters using an Genetic Algorithm approach to obtain the optimal set of tuning values which can cope up with all operating points. Applying the governing mass balance equations, the mathematical model is determined and found to be (FOPDT) First order plus dead time model. The controller performance of the ZN tuned PID controller is fine tuned using GA based PID controller in terms of time domain specification as well as performance indices. Better enhanced controller performance was obtained for a GA tuned PID controller than that of ZN tuned PID controller at various operating points. All the simulations are carried out in Mat lab environment and the real time implementation is done on a coupled interacting spherical tank setup in LabVIEW Environment using NI Compact RIO 9024.
传统的PID控制器是一种众所周知的控制器，几乎在所有的过程工业中用于控制过程参数在期望的设定值。这些控制器的调谐是由经典的Zeigler Nichols (ZN)调谐完成的。由于过程罐以交互方式连接，在输入和输出之间表现出高度非线性的动态行为和时间延迟。ZN整定PID控制器参数在不同的工作点表现出不同的非线性特性，不能适应所有的工作点。本文的目的是对非线性耦合球罐过程进行增强PID控制器性能的实时实现。本文采用的方法是将ZN整定的PID值作为基值，利用遗传算法对这些参数进行微调，得到能应付所有工作点的最优整定值集。应用控制质量平衡方程，确定了该系统的数学模型为FOPDT一阶加死区时间模型。采用基于遗传算法的PID控制器，从时域规格和性能指标两个方面对ZN整定PID控制器的控制器性能进行了微调。在不同的工作点上，遗传算法整定PID控制器的控制性能比ZN整定PID控制器有更好的提高。所有的仿真都在Mat实验室环境中进行，并在LabVIEW环境中使用NI Compact RIO 9024在耦合交互球形罐装置上进行了实时实现。
{"title":"Control of a non-linear coupled spherical tank process using GA tuned PID controller","authors":"D. Pradeepkannan, S. Sathiyamoorthy","doi":"10.1109/ICACCCT.2014.7019324","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019324","url":null,"abstract":"Conventional PID controller is a well known controller used in almost all process Industries for controlling the process parameters at desired set value. The tuning of these controllers is done by a classical Zeigler Nichols (ZN) tuning. As the process tanks are connected in an interacting mode, there exhibits a highly nonlinear dynamic behavior and time delays between the inputs and outputs. The ZN tuned PID controller parameters does not cope with all operating points as it exhibits different non linear characteristics at various operating points. This paper aims at real time implementation of enhanced PID controller performance for a nonlinear coupled spherical tank process. The methodology followed in this paper is to keep the ZN tuned PID values as the base value so as to fine tune these parameters using an Genetic Algorithm approach to obtain the optimal set of tuning values which can cope up with all operating points. Applying the governing mass balance equations, the mathematical model is determined and found to be (FOPDT) First order plus dead time model. The controller performance of the ZN tuned PID controller is fine tuned using GA based PID controller in terms of time domain specification as well as performance indices. Better enhanced controller performance was obtained for a GA tuned PID controller than that of ZN tuned PID controller at various operating points. All the simulations are carried out in Mat lab environment and the real time implementation is done on a coupled interacting spherical tank setup in LabVIEW Environment using NI Compact RIO 9024.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128103189","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019139
Liaqat Moideen Parakundil, N. Saraswathi
Reducing power consumption is a crucial task for any circuits. Increased demand for portable devices with reduced power dissipation has put necessary traction to design low power circuits. Both explicit and implicit pulse triggered flip flops are designed. Multiple Threshold CMOS (MTCMOS) technique and Self-controllable voltage level (SVL) circuit are employed to reduce power consumption. All the circuits are designed in 45nm technology for 1 GHz frequency.
{"title":"Low power pulse triggered D-flip flops using MTCMOS and Self-controllable voltage level circuit","authors":"Liaqat Moideen Parakundil, N. Saraswathi","doi":"10.1109/ICACCCT.2014.7019139","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019139","url":null,"abstract":"Reducing power consumption is a crucial task for any circuits. Increased demand for portable devices with reduced power dissipation has put necessary traction to design low power circuits. Both explicit and implicit pulse triggered flip flops are designed. Multiple Threshold CMOS (MTCMOS) technique and Self-controllable voltage level (SVL) circuit are employed to reduce power consumption. All the circuits are designed in 45nm technology for 1 GHz frequency.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134119782","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019277
V. S. Sundara Rajan, A. Malini, K. Sundarakantham
Mobile application is application software intended to be deployed and used on any portable devices. Online mobile applications are widely used in many critical areas such as online shopping, ticket booking, E-commerce, etc. The quality of these applications depends upon network related factors that may affect the normal working of the application under poor performance. So there is a need to test online mobile application but the existing method does not provide a better performance result based on the network and device factors. In this paper, a testing framework the “Test My APP” is proposed to test online mobile applications. The proposed testing framework measures the response time under various device and network conditions. The obtained results are then processed using the chi-square based performance evaluation method to provide accurate performance measure.
移动应用程序是旨在部署和使用在任何便携式设备上的应用软件。在线移动应用程序广泛应用于许多关键领域，如网上购物、机票预订、电子商务等。这些应用程序的质量取决于与网络相关的因素，这些因素在性能较差的情况下可能会影响应用程序的正常工作。因此，有必要对在线移动应用程序进行测试，但现有的方法并没有提供更好的基于网络和设备因素的性能结果。本文提出了一个测试框架“Test My APP”来测试在线移动应用。提出的测试框架测量在各种设备和网络条件下的响应时间。然后使用基于卡方的性能评价方法对所得结果进行处理，以提供准确的性能度量。
{"title":"Performance evaluation of online mobile application using Test My App","authors":"V. S. Sundara Rajan, A. Malini, K. Sundarakantham","doi":"10.1109/ICACCCT.2014.7019277","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019277","url":null,"abstract":"Mobile application is application software intended to be deployed and used on any portable devices. Online mobile applications are widely used in many critical areas such as online shopping, ticket booking, E-commerce, etc. The quality of these applications depends upon network related factors that may affect the normal working of the application under poor performance. So there is a need to test online mobile application but the existing method does not provide a better performance result based on the network and device factors. In this paper, a testing framework the “Test My APP” is proposed to test online mobile applications. The proposed testing framework measures the response time under various device and network conditions. The obtained results are then processed using the chi-square based performance evaluation method to provide accurate performance measure.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"217 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134324466","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019146
Gaurav Gupta, R. Mehra
This paper presents a technique to reduce the sub-threshold current in MOSFET by changing the doping profile in the substrate region near the channel. Sub-threshold current is also known as drain leakage current. The size of MOSFET can be reduced but at the cost of increase in leakage of current from drain to source in its stand by mode. This leakage current dissipates power even if the device is not in use. To avoid this problem leakage must be reduced so that the advantage of reduced size may be tapped more efficiently. The results have been observed using 180nm, 90nm, 45nm, 32nm MOSFET technology. The simulated results clearly show that there is a considerably large reduction in sub-threshold current with a change in acceptor doping concentration from 2.50e + 17 cm-3 to 5.00e + 18 cm-3 to of the channel region in the substrate.
{"title":"MOSFET sub-threshold current reduction by varying substrate doping","authors":"Gaurav Gupta, R. Mehra","doi":"10.1109/ICACCCT.2014.7019146","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019146","url":null,"abstract":"This paper presents a technique to reduce the sub-threshold current in MOSFET by changing the doping profile in the substrate region near the channel. Sub-threshold current is also known as drain leakage current. The size of MOSFET can be reduced but at the cost of increase in leakage of current from drain to source in its stand by mode. This leakage current dissipates power even if the device is not in use. To avoid this problem leakage must be reduced so that the advantage of reduced size may be tapped more efficiently. The results have been observed using 180nm, 90nm, 45nm, 32nm MOSFET technology. The simulated results clearly show that there is a considerably large reduction in sub-threshold current with a change in acceptor doping concentration from 2.50e + 17 cm-3 to 5.00e + 18 cm-3 to of the channel region in the substrate.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133106068","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019486
N. S. Shymna Nizar, A. R. Krishna
Fast Fourier Transforms have become an integral part of any digital communication system and a wide variety of approaches have been tried in order to optimize the algorithm for a variety of parameters, primarily being memory and speed. Major problem in FFT calculation is the increased number of complex multiplication units. Folding transformations are used to design FFT architectures with reduced number of functional units. In the folding transformation, many butterflies in the same column can be mapped to one butterfly unit. A highly efficient pipelined folded FFT architecture for 8 point R2 FFT is presented here. When compared with the normal R2 FFT architecture, the pipelined architecture shows efficiency both in speed and area consumption. Futher reduction in the area can be obtained by using COordinate Rotation for DIgital Computer (CORDIC) algorithm, which is an add and shift algorithm that replaces complex twiddle factor multiplication. The FFT block is designed to be capable of computing 8 point FFT and employs R2 (Radix2) architecture which is simple, elegant and best suited for communication applications. VHDL coding is simulated and synthesized in Xilinx ISE Design Suite 12.1.
快速傅里叶变换已经成为任何数字通信系统的一个组成部分，并且已经尝试了各种各样的方法来优化各种参数的算法，主要是内存和速度。FFT计算的主要问题是复杂乘法单元数量的增加。折叠变换用于设计功能单元数量减少的FFT体系结构。在折叠变换中，同一列中的许多蝴蝶可以映射到一个蝴蝶单元。本文提出了一种用于8点R2 FFT的高效流水线折叠FFT架构。与普通的R2 FFT结构相比，流水线结构在速度和面积消耗方面都显示出效率。利用坐标旋转算法(COordinate Rotation for DIgital Computer, CORDIC)可以进一步缩小面积。CORDIC算法是一种取代复杂旋转因子乘法的加移位算法。FFT模块设计为能够计算8点FFT，采用简单，优雅，最适合通信应用的R2 (Radix2)架构。在Xilinx ISE Design Suite 12.1中模拟和合成了VHDL编码。
{"title":"An efficient folded pipelined architecture for Fast Fourier Transform using Cordic algorithm","authors":"N. S. Shymna Nizar, A. R. Krishna","doi":"10.1109/ICACCCT.2014.7019486","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019486","url":null,"abstract":"Fast Fourier Transforms have become an integral part of any digital communication system and a wide variety of approaches have been tried in order to optimize the algorithm for a variety of parameters, primarily being memory and speed. Major problem in FFT calculation is the increased number of complex multiplication units. Folding transformations are used to design FFT architectures with reduced number of functional units. In the folding transformation, many butterflies in the same column can be mapped to one butterfly unit. A highly efficient pipelined folded FFT architecture for 8 point R2 FFT is presented here. When compared with the normal R2 FFT architecture, the pipelined architecture shows efficiency both in speed and area consumption. Futher reduction in the area can be obtained by using COordinate Rotation for DIgital Computer (CORDIC) algorithm, which is an add and shift algorithm that replaces complex twiddle factor multiplication. The FFT block is designed to be capable of computing 8 point FFT and employs R2 (Radix2) architecture which is simple, elegant and best suited for communication applications. VHDL coding is simulated and synthesized in Xilinx ISE Design Suite 12.1.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133119709","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}
Pub Date : 2014-05-08DOI: 10.1109/ICACCCT.2014.7019155
Sweta C. Morajkar, J. Laxminarayana
Due to increase in number of technologies, a large amount of data gets accumulated. The need arises to handle this data for retrieving and analyzing useful information. Clustering of temporal data has been explored using evolutionary clustering. However the time dimension associated with the record has not been considered. Traditional clustering algorithms usually focus on grouping data objects based on similarity function. Temporal data clustering extends traditional clustering mechanisms and provides underpinning solutions for discovering the evolving information over the period of time. This paper proposes a methodology for clustering medical observations of patients based on a new similarity measure. We show how to accelerate the clustering algorithm by avoiding unnecessary distance calculations by applying such similarity measure.
{"title":"Threshold based similarity clustering of medical data","authors":"Sweta C. Morajkar, J. Laxminarayana","doi":"10.1109/ICACCCT.2014.7019155","DOIUrl":"https://doi.org/10.1109/ICACCCT.2014.7019155","url":null,"abstract":"Due to increase in number of technologies, a large amount of data gets accumulated. The need arises to handle this data for retrieving and analyzing useful information. Clustering of temporal data has been explored using evolutionary clustering. However the time dimension associated with the record has not been considered. Traditional clustering algorithms usually focus on grouping data objects based on similarity function. Temporal data clustering extends traditional clustering mechanisms and provides underpinning solutions for discovering the evolving information over the period of time. This paper proposes a methodology for clustering medical observations of patients based on a new similarity measure. We show how to accelerate the clustering algorithm by avoiding unnecessary distance calculations by applying such similarity measure.","PeriodicalId":239918,"journal":{"name":"2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133281779","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}
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