Pub Date : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798461
A. K. Tiwary, N. Gupta
A novel implementation of microstrip low pass filter is proposed on the EBG structured ground plane. A high rejection bandwidth is achieved by etching the circular shaped EBG pattern on the ground plane. The offset introduced in the EBG pattern further improves the rejection bandwidth. The simulation is performed using the full wave Method of Moments based IE3D simulator. The characteristics of the filter determined in terms of S-parameters depict an improved rejection bandwidth over a much higher range of frequencies.
{"title":"Microstrip Low Pass Filter with Improved Rejection Bandwidth","authors":"A. K. Tiwary, N. Gupta","doi":"10.1109/ICIINFS.2008.4798461","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798461","url":null,"abstract":"A novel implementation of microstrip low pass filter is proposed on the EBG structured ground plane. A high rejection bandwidth is achieved by etching the circular shaped EBG pattern on the ground plane. The offset introduced in the EBG pattern further improves the rejection bandwidth. The simulation is performed using the full wave Method of Moments based IE3D simulator. The characteristics of the filter determined in terms of S-parameters depict an improved rejection bandwidth over a much higher range of frequencies.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133334564","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798373
U. S. Ragupathy, D. Baskar, A. Tamilarasi
Advances in wavelet transforms and quantization methods have produced algorithms capable of surpassing the existing image compression standards like the joint photographic experts group (JPEG) algorithm. The existing compression methods for JPEG standards are using DCT with arithmetic coding and DWT with Huffman coding. The DCT uses a single kernel where as wavelet offers more number of filters depends on the applications. The wavelet based set partitioning in hierarchical trees (SPIHT) algorithm gives better compression. For best performance in image compression, wavelet transforms require filters that combine a number of desirable properties, such as orthogonality and symmetry, but they cannot simultaneously possess all of these properties. The relatively new field of multiwavelets offer more design options and can combine all desirable transform features. But there are some limitations in using the SPIHT algorithm for multiwavelet coefficients. This paper presents a new method for encoding the multiwavelet decomposed images by defining coefficients suitable for SPIHT algorithm which gives better compression performance over the existing methods in many cases.
{"title":"New Method of Image Compression Using Multiwavelets and Set Partitioning Algorithm","authors":"U. S. Ragupathy, D. Baskar, A. Tamilarasi","doi":"10.1109/ICIINFS.2008.4798373","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798373","url":null,"abstract":"Advances in wavelet transforms and quantization methods have produced algorithms capable of surpassing the existing image compression standards like the joint photographic experts group (JPEG) algorithm. The existing compression methods for JPEG standards are using DCT with arithmetic coding and DWT with Huffman coding. The DCT uses a single kernel where as wavelet offers more number of filters depends on the applications. The wavelet based set partitioning in hierarchical trees (SPIHT) algorithm gives better compression. For best performance in image compression, wavelet transforms require filters that combine a number of desirable properties, such as orthogonality and symmetry, but they cannot simultaneously possess all of these properties. The relatively new field of multiwavelets offer more design options and can combine all desirable transform features. But there are some limitations in using the SPIHT algorithm for multiwavelet coefficients. This paper presents a new method for encoding the multiwavelet decomposed images by defining coefficients suitable for SPIHT algorithm which gives better compression performance over the existing methods in many cases.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"56 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114052121","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798389
Santanu Kundu, Radha Purnima Dasari, S. Chattopadhyay, K. Manna
Scalability has become an important consideration in Network-on-Chip (NoC) designs. The word scalability has been widely used in the parallel processing community. For massively parallel computing, a scalable system has the property that performance will increase linearly with the system size. The scalability analysis may be used to select the best architecture for a problem under different constraints on the growth of the problem size and the number of processors. In this paper, we have analyzed the scalability issue of Mesh-of-Tree topology based network.
{"title":"Mesh-of-Tree Based Scalable Network-on-Chip Architecture","authors":"Santanu Kundu, Radha Purnima Dasari, S. Chattopadhyay, K. Manna","doi":"10.1109/ICIINFS.2008.4798389","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798389","url":null,"abstract":"Scalability has become an important consideration in Network-on-Chip (NoC) designs. The word scalability has been widely used in the parallel processing community. For massively parallel computing, a scalable system has the property that performance will increase linearly with the system size. The scalability analysis may be used to select the best architecture for a problem under different constraints on the growth of the problem size and the number of processors. In this paper, we have analyzed the scalability issue of Mesh-of-Tree topology based network.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178004","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798418
R. Sandanalakshmi, K. Manivannan, T. G. Palanivelu
The combination of multiple antennas and multicarrier code division multiple access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems, in scenarios that model real-life transmissions is an additional step towards an optimised achievement. Channel estimation is employed to improve its performance by characterising the channel. In this paper turbo aided iterative channel estimation (ICE) technique is proposed for orthogonal space-time block coded (STBC) MC-CDMA systems with multiple-input multiple-output (MIMO) channel in the downlink. Simulations with a realistic outdoor MIMO channel model, over a wide range of data rates shows that turbo aided ICE outperforms ICE.
{"title":"An Analysis of Link Adaptation Algorithm based On Link Quality Metrics for IEEE 802.16 Systems","authors":"R. Sandanalakshmi, K. Manivannan, T. G. Palanivelu","doi":"10.1109/ICIINFS.2008.4798418","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798418","url":null,"abstract":"The combination of multiple antennas and multicarrier code division multiple access (MC-CDMA) is a strong candidate for the downlink of future mobile communications. The study of such systems, in scenarios that model real-life transmissions is an additional step towards an optimised achievement. Channel estimation is employed to improve its performance by characterising the channel. In this paper turbo aided iterative channel estimation (ICE) technique is proposed for orthogonal space-time block coded (STBC) MC-CDMA systems with multiple-input multiple-output (MIMO) channel in the downlink. Simulations with a realistic outdoor MIMO channel model, over a wide range of data rates shows that turbo aided ICE outperforms ICE.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114475190","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798498
T. Fernando, S. Alahakoon, N. Nikraz
This paper addresses the problem of estimating a linear function of the states of a nonlinear system using sliding mode functional observer approach. Sliding mode functional observers proposed in this paper are of low-order. New conditions for the existence of sliding mode functional observers are derived. A design procedure for the determination of the observer parameters can also be easily derived based on the derived existence conditions.
{"title":"Sliding Mode Functional Observers for Nonlinear Systems","authors":"T. Fernando, S. Alahakoon, N. Nikraz","doi":"10.1109/ICIINFS.2008.4798498","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798498","url":null,"abstract":"This paper addresses the problem of estimating a linear function of the states of a nonlinear system using sliding mode functional observer approach. Sliding mode functional observers proposed in this paper are of low-order. New conditions for the existence of sliding mode functional observers are derived. A design procedure for the determination of the observer parameters can also be easily derived based on the derived existence conditions.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132770713","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798464
G. K. Mahanti, T. K. Sinhamahapatra, A. Ahmed, A. Chakrabarty
In this paper, the authors describe the synthesis of flat-top beam power pattern for antennas composed of concentric rings of isotropic elements. The synthesis is performed by particle swarm optimization (PSO), varying amplitudes and phases of the elements radially, so as to obtain desired side lobe level and ripple of flat-top beam in the vertical plane. Example illustrates the potential of the method.
{"title":"Synthesis of Flat-top Beam Pattern with a Multiple Concentric Circular Ring Array Antenna","authors":"G. K. Mahanti, T. K. Sinhamahapatra, A. Ahmed, A. Chakrabarty","doi":"10.1109/ICIINFS.2008.4798464","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798464","url":null,"abstract":"In this paper, the authors describe the synthesis of flat-top beam power pattern for antennas composed of concentric rings of isotropic elements. The synthesis is performed by particle swarm optimization (PSO), varying amplitudes and phases of the elements radially, so as to obtain desired side lobe level and ripple of flat-top beam in the vertical plane. Example illustrates the potential of the method.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123750331","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798495
A. Bhattacharya, C. Chakraborty
In this paper, a fast and simple technique to generate the current reference to compensate for the harmonics and reactive power in a shunt type active power filter (APF) is developed. A voltage source inverter (VSI) is operated in the current controlled mode for this purpose. For fast generation of the reference current in the APF, the dc link voltage of the VSI is always sensed and an initial estimate is derived through an ANN based PI controller. It has been observed that this method works fine for balanced load. Unbalance in load and also uncertainty/mismatch in the filter parameters, deteriorate the system performance. To overcome this drawback, an Adaline based technique is incorporated. Weights of Adaline are tuned to minimize the total harmonic distortion (THD) of the source current. Extensive simulations have confirmed the validity of the proposed scheme for all kinds of load (balanced and unbalanced) for a three phase three wire system.
{"title":"ANN (Adaline) Based Harmonic Compensation for Shunt Active Power Filter with Capacitor Voltage Based Predictive Technique","authors":"A. Bhattacharya, C. Chakraborty","doi":"10.1109/ICIINFS.2008.4798495","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798495","url":null,"abstract":"In this paper, a fast and simple technique to generate the current reference to compensate for the harmonics and reactive power in a shunt type active power filter (APF) is developed. A voltage source inverter (VSI) is operated in the current controlled mode for this purpose. For fast generation of the reference current in the APF, the dc link voltage of the VSI is always sensed and an initial estimate is derived through an ANN based PI controller. It has been observed that this method works fine for balanced load. Unbalance in load and also uncertainty/mismatch in the filter parameters, deteriorate the system performance. To overcome this drawback, an Adaline based technique is incorporated. Weights of Adaline are tuned to minimize the total harmonic distortion (THD) of the source current. Extensive simulations have confirmed the validity of the proposed scheme for all kinds of load (balanced and unbalanced) for a three phase three wire system.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125067933","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798482
S. Dakua, J. Sahambi
Heart failures are of increasing importance due to increasing life expectation. For clinical diagnosis parameters for the condition of hearts are needed and can be derived automatically by image processing. Accurate and fast image segmentation algorithms are of paramount importance for a wide range of medical imaging applications. Level set algorithms based on narrow band implementation have been among the most widely used segmentation algorithms. The narrow band level set method is a kind of technique that tracks the evolving interface. Its computation domain is set near the zero level set. In this work, we present an adaptive method to extract the left ventricle (LV) irrespective of the intensity variation in heart MR data using a narrow-band level set method. Instead of using the image directly, its scaled down versions are used removing the unnecessary redundancies and extra computations. Also, we suggest an automatic approach for gaussian parameter selection.
{"title":"A Level Set Method for Cardiac Magnetic Resonance Image Segmentation: An Adaptive Approach","authors":"S. Dakua, J. Sahambi","doi":"10.1109/ICIINFS.2008.4798482","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798482","url":null,"abstract":"Heart failures are of increasing importance due to increasing life expectation. For clinical diagnosis parameters for the condition of hearts are needed and can be derived automatically by image processing. Accurate and fast image segmentation algorithms are of paramount importance for a wide range of medical imaging applications. Level set algorithms based on narrow band implementation have been among the most widely used segmentation algorithms. The narrow band level set method is a kind of technique that tracks the evolving interface. Its computation domain is set near the zero level set. In this work, we present an adaptive method to extract the left ventricle (LV) irrespective of the intensity variation in heart MR data using a narrow-band level set method. Instead of using the image directly, its scaled down versions are used removing the unnecessary redundancies and extra computations. Also, we suggest an automatic approach for gaussian parameter selection.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122964039","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798450
G. Malwatkar, A. Khandekar, V. G. Asutkar, L. Waghmare
Controller designs of multivariable systems are always difficult due to interactions and coupling between inputs and outputs. Control system design involves input/output (IO) selection, that is, decisions on the number, the place, and the type of actuators and sensors. The choice of inputs and outputs affects the performance, complexity, and cost of the control system. In most of the multivariable systems controllers are designed by decomposing multi-loop systems into a number of equivalent single loops and design of a controller for each loop is performed. The success of controller depends on the input output pairing as it decides the structure of the controller. In this paper design rules and tuning procedure of the controller for multivariable process with delay time are discussed without decomposing multivariable system. An example, for which the proposed method of design of multivariable controller is employed to show its effectiveness.
{"title":"Design of Centralized PI/PID Controller: Interaction Measure Approach","authors":"G. Malwatkar, A. Khandekar, V. G. Asutkar, L. Waghmare","doi":"10.1109/ICIINFS.2008.4798450","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798450","url":null,"abstract":"Controller designs of multivariable systems are always difficult due to interactions and coupling between inputs and outputs. Control system design involves input/output (IO) selection, that is, decisions on the number, the place, and the type of actuators and sensors. The choice of inputs and outputs affects the performance, complexity, and cost of the control system. In most of the multivariable systems controllers are designed by decomposing multi-loop systems into a number of equivalent single loops and design of a controller for each loop is performed. The success of controller depends on the input output pairing as it decides the structure of the controller. In this paper design rules and tuning procedure of the controller for multivariable process with delay time are discussed without decomposing multivariable system. An example, for which the proposed method of design of multivariable controller is employed to show its effectiveness.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"157 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123099242","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 : 2008-12-01DOI: 10.1109/ICIINFS.2008.4798338
M. S. Nair, R. Rajasree, J. John, M. Wilscy
In this paper we propose an expectation-maximization (EM) algorithm with distance measure for color image segmentation. The probability distribution model used is the Gaussian mixture model. The concept of color distance measure is used in this algorithm to determine the region to which a particular pixel belongs. L *a* b color space is used to replace the more straightforward spaces such as the RGB color space and YUV color space. This algorithm is capable of automatically selecting the number of components of the model using minimum description length (MDL) criterion. The proposed method yields good segmentation with better PSNR and SSIM values compared to classical EM algorithm; that is, the segmented image will be structurally more similar to the original image.
{"title":"Expectation-Maximization with Distance Measure for Color Image Segmentation","authors":"M. S. Nair, R. Rajasree, J. John, M. Wilscy","doi":"10.1109/ICIINFS.2008.4798338","DOIUrl":"https://doi.org/10.1109/ICIINFS.2008.4798338","url":null,"abstract":"In this paper we propose an expectation-maximization (EM) algorithm with distance measure for color image segmentation. The probability distribution model used is the Gaussian mixture model. The concept of color distance measure is used in this algorithm to determine the region to which a particular pixel belongs. L *a* b color space is used to replace the more straightforward spaces such as the RGB color space and YUV color space. This algorithm is capable of automatically selecting the number of components of the model using minimum description length (MDL) criterion. The proposed method yields good segmentation with better PSNR and SSIM values compared to classical EM algorithm; that is, the segmented image will be structurally more similar to the original image.","PeriodicalId":429889,"journal":{"name":"2008 IEEE Region 10 and the Third international Conference on Industrial and Information Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115194018","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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