S. A. Mondal, S. Pal, Manodipan Sahoo, P. Mondal, H. Rahaman
{"title":"A new feedback circuit based charge-pump for wide-range and low-jitter DLL suitable for PET imaging applications","authors":"S. A. Mondal, S. Pal, Manodipan Sahoo, P. Mondal, H. Rahaman","doi":"10.1109/ICDCSYST.2014.6926125","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926125","url":null,"abstract":"Charge-pump adds/removes charges to/from a loop-filter via constant current source/sink. Channel length modulation effect in the locking range of DLL (Delay Locked Loop) worsens the matching between this current source and sink. A new feedback circuit based charge-pump is proposed here to reduce this mismatch for PET (Positron Emission Tomography) imaging applications. Simulations are performed in UMC 180nm process to validate the effectiveness of the technique. Here current mismatch reduction of 28.08% and 86.25% is achieved for bias current of 10 uA and 40 uA respectively at 3.3V supply. Locking range of DLL is enhanced by (Vtn + Vtp + 2Von) compared to the existing feedback circuit in literature. The advantage of the feedback circuit is also observed at lower supply voltages viz. 2.5V and 1.8V at 180 nm technology node.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130208632","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":"Modified CCSDS image data compression","authors":"Jinitha Prem, Dominic Mathew","doi":"10.1109/ICDCSYST.2014.6926163","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926163","url":null,"abstract":"Consultative Committee for Space Data Systems (CCSDS) data compression consists of a two dimensional discrete wavelet transform of the image, followed by bit-plane coding of the transformed data. The algorithm can provide both lossless and lossy compression, and allows a user to directly control the compressed data volume or the fidelity with which the wavelet-transformed data can be reconstructed. The proposed algorithm yields better rate-distortion performance and has applications for near-earth and deep-space missions when compared to the standard recommendation. In the proposed method the Rice codes used in the CCSDS standard is replaced by subexponential coding which improves the rate-distortion performance and is robust against noise and outliers.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584661","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}
B. Muralikrishna, G. L. Madhumati, Habibulla Khan, K. Deepika
{"title":"Reconfigurable System-on-Chip design using FPGA","authors":"B. Muralikrishna, G. L. Madhumati, Habibulla Khan, K. Deepika","doi":"10.1109/ICDCSYST.2014.6926215","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926215","url":null,"abstract":"System-on-Chip (SoC) design integrates processors, memory, and a variety of IPs in a single design. Due to the FPGA capabilities and high time-to-market pressures, complex SoC designs are increasingly targeted to FPGA. Traditionally cores in FPGAs are connected using AXI and PLB bus-based architectures. FPGA devices provide Embedded Systems development with new alternatives for creating new hardware accelerated applications. The availability of embedded processor subsystems in FPGAs opens the door to a myriad of applications. Reconfigurable System-on-Chip architecture: includes MicroBlaze Soft Core Processor integrates peripherals with PLB and OPB Buses provides access to memory, PS2 and VGA IP cores. A new peripheral based Arithmetic application is designed, the keyboard module is a custom hardware module that accepts input from a PS/2 serial keyboard and outputs character data to the VGA input memory. VHDL Language is used in ISE for custom logic design. SystemC & VHDL Co-Synthesis scenario provides a way of checking interoperability of a single designed different functionality hardware module. Both designs are synthesizable and implemented in a single Bitstream, and configured to FPGA. Two level functionality is observed for the configured Bitstream with FPGA Hardware, design modeling was done using SystemC & VHDL Co-Synthesis. This paper presents an evaluation of design methods and concepts of reconfigurable architecture; it provides a lot of options for system designers. Co-Synthesis was done either Top-Down or Bottom-Up Design Methodologies. Implementation was targeted through Spartan - 3E FPGA Board.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132737545","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":"Hierarchical SVM to detect mental stress in human beings using Heart Rate Variability","authors":"L. Vanitha, G. Suresh","doi":"10.1109/ICDCSYST.2014.6926145","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926145","url":null,"abstract":"Stress has become an embedded part of our life, being stressed by our financial worries, our job, etc. Stress causes physical illnesses, such as heart attacks, arthritis, and chronic headaches or psychological diseases like mental illness, anger, anxiety, and depression. There are several research works coming up to resolve the limitations on measuring, analyzing and identifying the human stress levels Amongst the many stress monitoring methods the more reliable method to determine the human stress level is to use physiological signals. The Heart Rate Variability (HRV) determined from ECG signal, an efficient parameter to detect the stress level is used in this work. The features extracted from HRV are given as input, to the Hierarchical classifier, to classify the stress into one of the four levels as no stress, low stress, medium stress and high stress. The performance of the hierarchical structure is better and the efficiency of classification is 92 %.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133195347","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":"A study on the effect of emotion evoking videos on physiological signals","authors":"K. G. Smitha, Neethu Robinson, A. P. Vinod","doi":"10.1109/ICDCSYST.2014.6926203","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926203","url":null,"abstract":"The power of the music in evoking physical reactions has been well studied in literature for healthy and ill subjects. In this study we implemented a plethysmogragh data-acquisition system and analyzed the effect of emotion-evoking videos with audio and without audio on heart rate and average blood flow power. Our experiments showed that the audio plays the key role in variation of heart rate and average blood power with a high significance value (p=4.37×10-5) when compared to visual without audio. The research can be extended further to the development of smart software/applications that predicts user-specific emotion-evoking videos.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133217365","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":"Outage performance analysis of MIMO cognitive radio network users in fading environment","authors":"Anil Vallamreddy, P. Indumathi","doi":"10.1109/ICDCSYST.2014.6926207","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926207","url":null,"abstract":"This paper investigates the performance of Multiple Input Multiple Output (MIMO) cognitive radio network to provide highly reliable communication for all users in a network and efficient utilization of radio spectrum in a fair-minded way based on outage probability. The outage probability depends on the interference from license user (i.e., primary users) in a spectrum. We develop a simulation of outage probability with respect to interference threshold and average number of primary users to evaluate performance of a cognitive radio (CR) user in faded environment.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122334176","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}
P. Soundarabai, A. Rani, Ritesh Sahai, J. Thriveni, K. Venugopal, L. M. Patnalk
{"title":"Load balancing with availability checker and load reporters (LB-ACLRs) for improved performance in distributed systems","authors":"P. Soundarabai, A. Rani, Ritesh Sahai, J. Thriveni, K. Venugopal, L. M. Patnalk","doi":"10.1109/ICDCSYST.2014.6926209","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926209","url":null,"abstract":"Distributed system has quite a lot of servers to attain increased availability of service and for fault tolerance. Balancing the load among these servers is an important task to achieve better performance. There are various hardware and software based load balancing solutions available. However there is always an overhead on Servers and the Load Balancer while communicating with each other and sharing their availability and the current load status information. Load balancer is always busy in listening to clients' request and redirecting them. It also needs to collect the servers' availability status frequently, to keep itself up-to-date. Servers are busy in not only providing service to clients but also sharing their current load information with load balancing algorithms. In this paper we have proposed and discussed the concept and system model for software based load balancer along with Availability-Checker and Load Reporters (LB-ACLRs) which reduces the overhead on server and the load balancer. We have also described the architectural components with their roles and responsibilities. We have presented a detailed analysis to show how our proposed Availability Checker significantly increases the performance of the system.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121115457","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":"Improved linearity standard cell based flash ADC with DBNS encoding scheme","authors":"P. Palsodkar, Sandhya More, P. Dakhole","doi":"10.1109/ICDCSYST.2014.6926158","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926158","url":null,"abstract":"In this paper three different designs are discussed in term of their linearity. Proposed ADC consists of a linearity improved comparator scheme consist of CMOS standard cells (NAND, NOR) in place of Inverter based comparators which eliminate need of feature size variation. Instead of using traditional encoding strategy; Double Base Number System based encoder assembled with ADC to improve speed. This assembly can process arithmetic operations fast due to its multidimensional logarithmic number feature.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130755074","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}
Dr. Prof. Datta S Chavan Ph.D., Aditi Rana, Mahal Raj Singh, P. Karandikar, S. D. Bhide
{"title":"Modeling of flicker due to vertical wind shear initiated by vegetation in a riverside wind turbine using wind tunnel","authors":"Dr. Prof. Datta S Chavan Ph.D., Aditi Rana, Mahal Raj Singh, P. Karandikar, S. D. Bhide","doi":"10.1109/ICDCSYST.2014.6926200","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926200","url":null,"abstract":"The paper reveals niceties of impact of river bank environment on vertical wind shear and subsequently on flicker in wind turbine which is sited on that surface. This is accomplished in a laboratory wind tunnel with artificial surfaces created in a wind tunnel. The various surfaces imitated in the wind tunnel are river sand, various sizes of pebbles of river bank, flowing water of river at high speed, flowing water of river at low speed etc. Wind turbine is tested for these sundry kinds of surface roughness. Here emphasis is given on establishment of empirical model of flicker initiated owing to vertical wind shear instigated because of sundry surface roughness of river bank topography. Values of flicker with projected empirical model and flicker from wind tunnel test are closer.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"740 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114088855","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}
D. S. Praveena, Dr. Ila. Vennila, Ms. A. K. Kavitha
{"title":"Design of wavelet based image fusion using A Trous algorithm","authors":"D. S. Praveena, Dr. Ila. Vennila, Ms. A. K. Kavitha","doi":"10.1109/ICDCSYST.2014.6926161","DOIUrl":"https://doi.org/10.1109/ICDCSYST.2014.6926161","url":null,"abstract":"Image fusion presents a technique based on wavelet fusion for change detection in Synthetic Aperture Radar images. The image fusion technique is introduced to generate a difference image by using complementary information from a mean-ratio image and a log-ratio image. Our objective is to analyse the performance of the A Trous algorithm for Synthetic Aperture Radar Images. In our work, an improved additive-wavelet fusion method is presented using the A Trous algorithm and it is modified to suit the Grey scale Multispectral Images. This method is applied to the wavelet coefficients that are formulated by the mean ratio and log ratio difference images and produce the fused image. To analyse the performance of the fused image obtained above two methods information entropy, correlation coefficient and Root Mean Square Error are computed and quantitative analysis is done for two set of input source images.","PeriodicalId":252016,"journal":{"name":"2014 2nd International Conference on Devices, Circuits and Systems (ICDCS)","volume":"3 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120810223","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}