Pub Date : 2009-03-14DOI: 10.1109/MSPCT.2009.5164165
A. Prasoon, K. Rajan
This paper presents the design of the area optimized integer Two Dimensional Discrete Cosine Transform (2-D DCT) used in H.264/AVC codecs. The 2-D DCT calculation is performed by utilizing the separability property, in such a way that 2-D DCT is divided into two 1-D DCT calculation that are joined through a common memory. Due to its area optimized approach, the design will find application in mobile devices. Verilog hardware description language (HDL) in cadence environment has been used for design, compilation, simulation and synthesis of transform block in 0.18µ TSMC technology.
{"title":"An optimal transform architecture for H.264/AVC","authors":"A. Prasoon, K. Rajan","doi":"10.1109/MSPCT.2009.5164165","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164165","url":null,"abstract":"This paper presents the design of the area optimized integer Two Dimensional Discrete Cosine Transform (2-D DCT) used in H.264/AVC codecs. The 2-D DCT calculation is performed by utilizing the separability property, in such a way that 2-D DCT is divided into two 1-D DCT calculation that are joined through a common memory. Due to its area optimized approach, the design will find application in mobile devices. Verilog hardware description language (HDL) in cadence environment has been used for design, compilation, simulation and synthesis of transform block in 0.18µ TSMC technology.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124721380","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164218
A. A. Moinuddin, E. Khan, M. Ghanbari
In this paper we investigate the significance of tree structures on the performance of zerotree based wavelet video codecs. Since zerotree approach is based on aggregation of insignificant coefficients in trees, therefore design of a tree structure is the key issue for a better performance. We have considered four different tree structures with characteristics varying from a simple to relatively complex and composite tree structures to code the luminance-chrominance components of a video sequence. We observe that in general more complex and longer trees do not necessarily improve the coding efficiency. Further, the simulation results show that by designing an efficient tree structure, depending on the picture content, the performance of the video coder can be improved by up to 2.0 dB.
{"title":"Significance of tree structures for zerotree-based wavelet video codecs","authors":"A. A. Moinuddin, E. Khan, M. Ghanbari","doi":"10.1109/MSPCT.2009.5164218","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164218","url":null,"abstract":"In this paper we investigate the significance of tree structures on the performance of zerotree based wavelet video codecs. Since zerotree approach is based on aggregation of insignificant coefficients in trees, therefore design of a tree structure is the key issue for a better performance. We have considered four different tree structures with characteristics varying from a simple to relatively complex and composite tree structures to code the luminance-chrominance components of a video sequence. We observe that in general more complex and longer trees do not necessarily improve the coding efficiency. Further, the simulation results show that by designing an efficient tree structure, depending on the picture content, the performance of the video coder can be improved by up to 2.0 dB.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133644573","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164183
A. Datar, Alok K. Jain, P.C. Sharma
In this work, 32 channel Cosine Modulated Filter Bank (CMFB) is used to decompose and reconstruct single lead ECG signal. The prototype filter for analysis and synthesis filter banks is designed using window technique. Variants of Blackman window, which is a fixed window, are used to design the prototype filter. The cutoff frequency of prototype filter is optimized to minimize the error function. A linear iterative optimization algorithm is used to achieve minimum reconstruction error. The results show a significant reduction in reconstruction error. In some cases, Blackman window family performed even better than adjustable windows. Further, No perceptible loss in signal morphology and features are visible in reconstructed ECG signal, which is in accordance with clinical requirement. ECG signals from MIT-BIH ECG database is used to test the designed filter bank.
{"title":"Performance of Blackman window family in M-channel Cosine Modulated Filter Bank for ECG signals","authors":"A. Datar, Alok K. Jain, P.C. Sharma","doi":"10.1109/MSPCT.2009.5164183","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164183","url":null,"abstract":"In this work, 32 channel Cosine Modulated Filter Bank (CMFB) is used to decompose and reconstruct single lead ECG signal. The prototype filter for analysis and synthesis filter banks is designed using window technique. Variants of Blackman window, which is a fixed window, are used to design the prototype filter. The cutoff frequency of prototype filter is optimized to minimize the error function. A linear iterative optimization algorithm is used to achieve minimum reconstruction error. The results show a significant reduction in reconstruction error. In some cases, Blackman window family performed even better than adjustable windows. Further, No perceptible loss in signal morphology and features are visible in reconstructed ECG signal, which is in accordance with clinical requirement. ECG signals from MIT-BIH ECG database is used to test the designed filter bank.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128019526","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164182
P. Tilanthe, P. Sharma
A stacked, three layer circular antenna is presented here which has ultra wide band radiation characteristic. In order to achieve wide bandwidth, proximity coupled circular patches with dual probe feed is used. The resonator parameters are optimized in order to achieve ultra wide band characteristics. Few optimization results are also presented. Return loss, radiation pattern and VSWR over frequency range 1GHz – 30GHz is presented for the best antenna.
{"title":"An ultra broadband stacked circular patch antenna","authors":"P. Tilanthe, P. Sharma","doi":"10.1109/MSPCT.2009.5164182","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164182","url":null,"abstract":"A stacked, three layer circular antenna is presented here which has ultra wide band radiation characteristic. In order to achieve wide bandwidth, proximity coupled circular patches with dual probe feed is used. The resonator parameters are optimized in order to achieve ultra wide band characteristics. Few optimization results are also presented. Return loss, radiation pattern and VSWR over frequency range 1GHz – 30GHz is presented for the best antenna.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116235558","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164184
Madhulika, Alok Kumar, S. Varma
Advances in micro electro mechanical have triggered an enormous interest in wireless sensor networks. The difficulty of accurate location of sensor nodes has long been considered as very difficult to solve, when taking into account the realities of real world applications. In this paper localized problem is considered with the aim to improve accuracy in location estimation. It describes a distributed algorithm for estimating node positions in a sensor network called Iterative Positioning Algorithm (IPA), that makes use of three stationary beacons to localize a few neighboring nodes and the process continues until the entire network is localized. We design, implement, evaluate and analyze this distributed localization algorithm using simulations. We also demonstrate that the algorithm scales to large networks and handles real world deployment scenarios. These results of the simulation will provide invaluable insights to the performance of the selected range free localization algorithms.
{"title":"Iterative and distributed range-free localization algorithm for wireless sensor networks","authors":"Madhulika, Alok Kumar, S. Varma","doi":"10.1109/MSPCT.2009.5164184","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164184","url":null,"abstract":"Advances in micro electro mechanical have triggered an enormous interest in wireless sensor networks. The difficulty of accurate location of sensor nodes has long been considered as very difficult to solve, when taking into account the realities of real world applications. In this paper localized problem is considered with the aim to improve accuracy in location estimation. It describes a distributed algorithm for estimating node positions in a sensor network called Iterative Positioning Algorithm (IPA), that makes use of three stationary beacons to localize a few neighboring nodes and the process continues until the entire network is localized. We design, implement, evaluate and analyze this distributed localization algorithm using simulations. We also demonstrate that the algorithm scales to large networks and handles real world deployment scenarios. These results of the simulation will provide invaluable insights to the performance of the selected range free localization algorithms.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116539952","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164239
A. Telba
This paper presents modeling and simulation of a wideband low jitter frequency synthesizer. The proposed system uses two phase-locked loops (PLLs) connected in cascade. The first PLL uses a voltage-controlled crystal oscillator (VCXO) to eliminate the input jitter and the second one is a wideband PLL. One important advantage of using the proposed system is that it uses only one VCXO for multiple carrier frequencies, while reducing the jitter considerably. The MATLAB Simulink simulation results show that the jitter could be minimized while working at different carrier frequencies.
{"title":"Modeling and simulation of wideband low jitter frequency synthesizer","authors":"A. Telba","doi":"10.1109/MSPCT.2009.5164239","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164239","url":null,"abstract":"This paper presents modeling and simulation of a wideband low jitter frequency synthesizer. The proposed system uses two phase-locked loops (PLLs) connected in cascade. The first PLL uses a voltage-controlled crystal oscillator (VCXO) to eliminate the input jitter and the second one is a wideband PLL. One important advantage of using the proposed system is that it uses only one VCXO for multiple carrier frequencies, while reducing the jitter considerably. The MATLAB Simulink simulation results show that the jitter could be minimized while working at different carrier frequencies.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123307383","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164197
Aditya Goel, V. J. Gond
Due to introduction of various wide-band applications in wired and wireless network demand of bandwidth is growing exponential. The existing network is not capable to meet the requirement of vast bandwidth. These requirement can be meet by all optical network which is capable of transmitting enormous data at very high speed, around 50 Tera bits per seconds (Tbps) A wavelength conversion technique is addressed in this paper to reduced the blocking probability in wavelength routed networks. It is seen that the blocking probability of traffic requests decreases as the wavelength conversion factor increases. We explode the possibility for network with different size comprising of 25, 50 and 100 nodes with variation in wavelength per link In this work the effects of varying number of wavelength converters, different traffic types on fiber link utilization and network blocking probability are evaluated and results are shown that the blocking probability is minimum with wavelength conversion factor of 0.5. Thus we propose a network with 32 and 64 wavelengths and 50 % wavelength convertible nodes.
{"title":"Effect of wavelength conversion factor on blocking probability and link utilization in wavelength routed optical network","authors":"Aditya Goel, V. J. Gond","doi":"10.1109/MSPCT.2009.5164197","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164197","url":null,"abstract":"Due to introduction of various wide-band applications in wired and wireless network demand of bandwidth is growing exponential. The existing network is not capable to meet the requirement of vast bandwidth. These requirement can be meet by all optical network which is capable of transmitting enormous data at very high speed, around 50 Tera bits per seconds (Tbps) A wavelength conversion technique is addressed in this paper to reduced the blocking probability in wavelength routed networks. It is seen that the blocking probability of traffic requests decreases as the wavelength conversion factor increases. We explode the possibility for network with different size comprising of 25, 50 and 100 nodes with variation in wavelength per link In this work the effects of varying number of wavelength converters, different traffic types on fiber link utilization and network blocking probability are evaluated and results are shown that the blocking probability is minimum with wavelength conversion factor of 0.5. Thus we propose a network with 32 and 64 wavelengths and 50 % wavelength convertible nodes.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128316586","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164223
M. Khatib, F. Ghani, M. F. Ain
This paper presents a simulation study for a new block transmission system that depends on sharing the equalization process between the receiver and the transmitter. The transmitter share will be 75% of the signal processing, while the rest will be done at the receiver. A real time simulation is performed using Simulink to prove the mathematical model. Detailed block diagrams are introduced with description of the system behavior, with a comparison of the performance with the mathematical model for different signal to noise ratios.
{"title":"Design and simulation of a modified block transmission system with pre-coding","authors":"M. Khatib, F. Ghani, M. F. Ain","doi":"10.1109/MSPCT.2009.5164223","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164223","url":null,"abstract":"This paper presents a simulation study for a new block transmission system that depends on sharing the equalization process between the receiver and the transmitter. The transmitter share will be 75% of the signal processing, while the rest will be done at the receiver. A real time simulation is performed using Simulink to prove the mathematical model. Detailed block diagrams are introduced with description of the system behavior, with a comparison of the performance with the mathematical model for different signal to noise ratios.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117098708","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164220
G. M. Bhat, Javaid Ahmad, Shabir Ahmad
In this paper, an exciting recent development in non-linear dynamics and realization of Chaos and its applications in Secure Message Communication is presented. The Chaos oscillator based on non-linear resistor has been taken as Chaos generator at the transmitting and receiving side. The phenomenon of secure communication with chaos spread spectrum has been investigated experimentally. A Chaos signal which has been generated from a chaos generator has been modulated with the message signal to be transmitted, and subsequently demodulated using the same chaotic signal generated at the receiving end, to enable secure message communication. The results of experimental investigation have been presented in the paper.
{"title":"On the realization and design of chaotic spread spectrum modulation technique for secure data transmission","authors":"G. M. Bhat, Javaid Ahmad, Shabir Ahmad","doi":"10.1109/MSPCT.2009.5164220","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164220","url":null,"abstract":"In this paper, an exciting recent development in non-linear dynamics and realization of Chaos and its applications in Secure Message Communication is presented. The Chaos oscillator based on non-linear resistor has been taken as Chaos generator at the transmitting and receiving side. The phenomenon of secure communication with chaos spread spectrum has been investigated experimentally. A Chaos signal which has been generated from a chaos generator has been modulated with the message signal to be transmitted, and subsequently demodulated using the same chaotic signal generated at the receiving end, to enable secure message communication. The results of experimental investigation have been presented in the paper.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114919182","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 : 2009-03-14DOI: 10.1109/MSPCT.2009.5164221
Anuj Kumar, I. Singh, S. K. Sud
Environment monitoring has become a necessity because of global warming and climate change. All across the globe researchers are trying to monitor the environmental parameters of temperature, humidity and pollutants gases mere precisely in real time. Sensing system using sensor arrays has been developed to monitor indoor environment, however, these systems are costly and have not gained wide acceptance. Precise monitoring of building environment has a huge potential in terms of energy savings. In this paper we are trying to look into the problem of real time processing of carbon monoxide and carbon dioxide gases measurement using a DSP board (TMS320C6455) and then implementing to the proposed gas monitoring system.
{"title":"Indoor environment gas monitoring system based on the digital signal processor","authors":"Anuj Kumar, I. Singh, S. K. Sud","doi":"10.1109/MSPCT.2009.5164221","DOIUrl":"https://doi.org/10.1109/MSPCT.2009.5164221","url":null,"abstract":"Environment monitoring has become a necessity because of global warming and climate change. All across the globe researchers are trying to monitor the environmental parameters of temperature, humidity and pollutants gases mere precisely in real time. Sensing system using sensor arrays has been developed to monitor indoor environment, however, these systems are costly and have not gained wide acceptance. Precise monitoring of building environment has a huge potential in terms of energy savings. In this paper we are trying to look into the problem of real time processing of carbon monoxide and carbon dioxide gases measurement using a DSP board (TMS320C6455) and then implementing to the proposed gas monitoring system.","PeriodicalId":179541,"journal":{"name":"2009 International Multimedia, Signal Processing and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121800225","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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