Pub Date : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726772
Sunil Malviya, N. Gupta, Vibhanshu Shirvastava
With the increasing demand of storage and transmission of digital images, image compression is now become an essential applications for storage and transmission. This paper proposes a new scheme for image compression using DWT (Discrete Wavelet Transform) taking into account sub-band features in the frequency domains. Method involves two steps firstly a two levels discrete wavelet transforms on selected input image. The original image is decomposed at different 8×8 blocks, after that apply 2D-Walsh-Wavelet Transform (WWT) on each 8×8 block of the low frequency sub-band. Firstly dividing each sub-band by a factor and then apply Arithmetic Coding on each sub-band independently. Transform each 8×8 block from LL2, and then divide each block 8×8 separated into; DC value and compressed by Arithmetic coding.
{"title":"2D-discrete walsh wavelet transform for image compression with arithmetic coding","authors":"Sunil Malviya, N. Gupta, Vibhanshu Shirvastava","doi":"10.1109/ICCCNT.2013.6726772","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726772","url":null,"abstract":"With the increasing demand of storage and transmission of digital images, image compression is now become an essential applications for storage and transmission. This paper proposes a new scheme for image compression using DWT (Discrete Wavelet Transform) taking into account sub-band features in the frequency domains. Method involves two steps firstly a two levels discrete wavelet transforms on selected input image. The original image is decomposed at different 8×8 blocks, after that apply 2D-Walsh-Wavelet Transform (WWT) on each 8×8 block of the low frequency sub-band. Firstly dividing each sub-band by a factor and then apply Arithmetic Coding on each sub-band independently. Transform each 8×8 block from LL2, and then divide each block 8×8 separated into; DC value and compressed by Arithmetic coding.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90936345","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726569
G. Kumar, K. Paramasivam
Modern IC design and manufacturing techniques are growing such that the transistor count on a single chip escalates exponentially with complex Embedded and DSP cores in it. Hence, testing of such complex ICs are extremely challenging. It is a well-known fact that test power is several times higher than functional power. Today's Ultra-Low Power devices in deep sub-micron technologies used for embedded applications in bio-medical electronics, wireless sensor networks and sophisticated battery operated portable electronic products such as laptops, cell phones, audio-video based multimedia products makes power management a critical parameter for test engineers. This survey paper first gives an overview of the need and importance of reducing test power of VLSI circuits. Next, a detailed survey of, recent approaches towards low power testing of high density VLSI circuits are presented. A comparison of, newly developed test solutions with respect to key parameters of low power testing like, test power, test energy, node switching activity and so on is presented for choosing a best possible solution. Finally, an insight towards benchmark circuits to be used for testing and EDA tools available for DFT is discussed. Good periodical survey in any research area is essential for better understanding of its basics and it also indicates the trends and scope for future research in the chosen area.
{"title":"Test power minimization of VLSI circuits: A survey","authors":"G. Kumar, K. Paramasivam","doi":"10.1109/ICCCNT.2013.6726569","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726569","url":null,"abstract":"Modern IC design and manufacturing techniques are growing such that the transistor count on a single chip escalates exponentially with complex Embedded and DSP cores in it. Hence, testing of such complex ICs are extremely challenging. It is a well-known fact that test power is several times higher than functional power. Today's Ultra-Low Power devices in deep sub-micron technologies used for embedded applications in bio-medical electronics, wireless sensor networks and sophisticated battery operated portable electronic products such as laptops, cell phones, audio-video based multimedia products makes power management a critical parameter for test engineers. This survey paper first gives an overview of the need and importance of reducing test power of VLSI circuits. Next, a detailed survey of, recent approaches towards low power testing of high density VLSI circuits are presented. A comparison of, newly developed test solutions with respect to key parameters of low power testing like, test power, test energy, node switching activity and so on is presented for choosing a best possible solution. Finally, an insight towards benchmark circuits to be used for testing and EDA tools available for DFT is discussed. Good periodical survey in any research area is essential for better understanding of its basics and it also indicates the trends and scope for future research in the chosen area.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89715698","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726538
Tapan P. Gondaliya, M. Singh
Modern communication is containing different types of wireless networks as backbone for various applications used for different users. Mobile Ad-hoc Networks is the type of network which contains many mobile devices and provide good solution for many type communications for different applications military, industry and remote areas (flood hit areas, nuclear hit areas etc). Mobile Ad-hoc Networks prove to be the best fit for various applications like Military operations, Flood affected areas, Remote area etc. Ad-hoc Networks are limited with energy and generally more venerable to various attacks as compared to other types of networks. Insider attacks are one of the active attacks occurred in Ad-hoc network. These attacks are very common in case of Reactive Protocols like Ad-hoc On Demand Distance Vector Protocol. In this research, an intrusion detection system will be developed for detection and isolation of attacks. In this Research, mac layer applications will be used for detecting malicious activities and will focus on the finding of attack sequences in the Network. This Research provided an intrusion detection system on MAC layer which have detected the attack sequences in MANET network. Research provides stable and effective attack observations which can be directly applicable to the Real environment for Mobile Ad-hoc Devices
{"title":"Intrusion detection system on MAC layer for attack prevention in MANET","authors":"Tapan P. Gondaliya, M. Singh","doi":"10.1109/ICCCNT.2013.6726538","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726538","url":null,"abstract":"Modern communication is containing different types of wireless networks as backbone for various applications used for different users. Mobile Ad-hoc Networks is the type of network which contains many mobile devices and provide good solution for many type communications for different applications military, industry and remote areas (flood hit areas, nuclear hit areas etc). Mobile Ad-hoc Networks prove to be the best fit for various applications like Military operations, Flood affected areas, Remote area etc. Ad-hoc Networks are limited with energy and generally more venerable to various attacks as compared to other types of networks. Insider attacks are one of the active attacks occurred in Ad-hoc network. These attacks are very common in case of Reactive Protocols like Ad-hoc On Demand Distance Vector Protocol. In this research, an intrusion detection system will be developed for detection and isolation of attacks. In this Research, mac layer applications will be used for detecting malicious activities and will focus on the finding of attack sequences in the Network. This Research provided an intrusion detection system on MAC layer which have detected the attack sequences in MANET network. Research provides stable and effective attack observations which can be directly applicable to the Real environment for Mobile Ad-hoc Devices","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90521788","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726718
P. Muralidhar, C. Rao
Motion estimation is one of the most important tasks in the current standards of video compression. In this paper seven different block matching motion estimation algorithms are analysed for fast motion estimation in video coding. The simulation results of the algorithms are compared based on PSNR, average time taken per frame, total number of search points per macro block and time taken per macro block.
{"title":"Analysis of block matching motion estimation algorithms","authors":"P. Muralidhar, C. Rao","doi":"10.1109/ICCCNT.2013.6726718","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726718","url":null,"abstract":"Motion estimation is one of the most important tasks in the current standards of video compression. In this paper seven different block matching motion estimation algorithms are analysed for fast motion estimation in video coding. The simulation results of the algorithms are compared based on PSNR, average time taken per frame, total number of search points per macro block and time taken per macro block.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76726008","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726632
Kratika Sharma, Ajay Goyal
At present, registration of the Large size Very High Resolution (VHR) images is one of the important task in remote image analysis. However, until now, it is still rare to find an accurate and robust image registration method, and most of the existing methods are designed for small size images. Among the most popular methods, SIFT is performed well to register VHR images but the calculation procedure is too slow. To overcome this difficulty coarse-to-fine strategy and parallel implementation have been proposed but again this increased the extra overhead of multiple PCs. This paper proposes a coarse-to-fine strategy, that combine Harris-Laplace detector together with SIFT descriptor. Proposed approach starts with roughly register the image at first place and then to perform fine registration by dividing the large size image in to small size process-able blocks. It improves registration accuracy by providing increased matching ratio as well as makes computation fast without the need of multiple PCs.
{"title":"Very high resolution image registration based on two step Harris-Laplace detector and SIFT descriptor","authors":"Kratika Sharma, Ajay Goyal","doi":"10.1109/ICCCNT.2013.6726632","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726632","url":null,"abstract":"At present, registration of the Large size Very High Resolution (VHR) images is one of the important task in remote image analysis. However, until now, it is still rare to find an accurate and robust image registration method, and most of the existing methods are designed for small size images. Among the most popular methods, SIFT is performed well to register VHR images but the calculation procedure is too slow. To overcome this difficulty coarse-to-fine strategy and parallel implementation have been proposed but again this increased the extra overhead of multiple PCs. This paper proposes a coarse-to-fine strategy, that combine Harris-Laplace detector together with SIFT descriptor. Proposed approach starts with roughly register the image at first place and then to perform fine registration by dividing the large size image in to small size process-able blocks. It improves registration accuracy by providing increased matching ratio as well as makes computation fast without the need of multiple PCs.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75485958","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726828
C. A. Dhote, A. Thakare, S. Chaudhari
Clustering is the process of organising data into meaningful groups, and these groups are called clusters. It is a way of grouping data samples together that is similar in some way, according to some criteria that you pick. Swarm intelligence (SI) is a collective behavior of social systems like insects such as ants (ant colony optimization, ACO), fish schooling, honey bees (bee algorithm, BA) and birds (particle swarm optimization, PSO). In this paper, a hybrid Swarm Intelligence based technique for data clustering is proposed using Particle Swarm Optimization and Bee Algorithm. Recent studies have shown that hybridization of K-means and PSO are more suitable for clustering large data sets. As the k-means algorithm tends to converge faster than PSO algorithm but usually trapped in a local optimal area. A new way of integrating BA with PSO proposed in this paper.
{"title":"Data clustering using particle swarm optimization and bee algorithm","authors":"C. A. Dhote, A. Thakare, S. Chaudhari","doi":"10.1109/ICCCNT.2013.6726828","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726828","url":null,"abstract":"Clustering is the process of organising data into meaningful groups, and these groups are called clusters. It is a way of grouping data samples together that is similar in some way, according to some criteria that you pick. Swarm intelligence (SI) is a collective behavior of social systems like insects such as ants (ant colony optimization, ACO), fish schooling, honey bees (bee algorithm, BA) and birds (particle swarm optimization, PSO). In this paper, a hybrid Swarm Intelligence based technique for data clustering is proposed using Particle Swarm Optimization and Bee Algorithm. Recent studies have shown that hybridization of K-means and PSO are more suitable for clustering large data sets. As the k-means algorithm tends to converge faster than PSO algorithm but usually trapped in a local optimal area. A new way of integrating BA with PSO proposed in this paper.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75137274","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726857
A. Srinivasan
The aim of this paper is speaker recognition of the letter `zha' in Tamil language, which consists of comparing a speech signal from an unknown speaker to a known speaker. The speech signals of the letter `zha' of male and female speakers are recognized by the Vector Quantization (VQ) technique called Mel Frequency Cepstrum Coefficients (MFCC). The recorded sampling frequency was at 16 kHz and the bit rate was at 15450 bits per second, where the original bit rate was at 128K bits per second with the help of wave surfer audio tool. The real time recognized output is taken by using Finite Fourier Transform (FFT) and this result is compared by using Mel Frequency Cepstral coefficients and vector Quantization. The speaker recognition system results are analyzed in MATLAB.
{"title":"Real time speaker recognition of letter ‘zha’ in Tamil language","authors":"A. Srinivasan","doi":"10.1109/ICCCNT.2013.6726857","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726857","url":null,"abstract":"The aim of this paper is speaker recognition of the letter `zha' in Tamil language, which consists of comparing a speech signal from an unknown speaker to a known speaker. The speech signals of the letter `zha' of male and female speakers are recognized by the Vector Quantization (VQ) technique called Mel Frequency Cepstrum Coefficients (MFCC). The recorded sampling frequency was at 16 kHz and the bit rate was at 15450 bits per second, where the original bit rate was at 128K bits per second with the help of wave surfer audio tool. The real time recognized output is taken by using Finite Fourier Transform (FFT) and this result is compared by using Mel Frequency Cepstral coefficients and vector Quantization. The speaker recognition system results are analyzed in MATLAB.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75976506","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726837
N. A. Gokkul, A. A. Kumar, S. Kumar, M. Ramakrishnan
One of the major concerns of Orthogonal Frequency Division Multiplexing (OFDM) systems are its high Peak to Average Power Ratio (PAPR) values. These high PAPR values result in serious degradation in performance when a non-linear power amplifier is employed. The Conventional Partial Transmit Sequence (C-PTS) technique is one of the highly efficient methods for PAPR reduction in OFDM systems. Unfortunately, the number of Inverse Fast Fourier Transform (IFFT) operations employed in C-PTS technique is large and this adds to the computational complexity of the technique. In our proposed Hybrid technique, we have combined the C-PTS technique with interleaving and signal clipping method. The peaks of the OFDM signal are compressed by interleaving the data frame associated with it. All the extra IFFT operations that are required for C-PTS technique are avoided by our proposed method. Signal clipping and filtering result in reducing PAPR values even further. The simulation results show that our proposed hybrid technique achieves better reduction compared to the C-PTS technique at reduced computational complexity.
{"title":"Performance improvement of OFDM using hybrid PAPR reduction technique","authors":"N. A. Gokkul, A. A. Kumar, S. Kumar, M. Ramakrishnan","doi":"10.1109/ICCCNT.2013.6726837","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726837","url":null,"abstract":"One of the major concerns of Orthogonal Frequency Division Multiplexing (OFDM) systems are its high Peak to Average Power Ratio (PAPR) values. These high PAPR values result in serious degradation in performance when a non-linear power amplifier is employed. The Conventional Partial Transmit Sequence (C-PTS) technique is one of the highly efficient methods for PAPR reduction in OFDM systems. Unfortunately, the number of Inverse Fast Fourier Transform (IFFT) operations employed in C-PTS technique is large and this adds to the computational complexity of the technique. In our proposed Hybrid technique, we have combined the C-PTS technique with interleaving and signal clipping method. The peaks of the OFDM signal are compressed by interleaving the data frame associated with it. All the extra IFFT operations that are required for C-PTS technique are avoided by our proposed method. Signal clipping and filtering result in reducing PAPR values even further. The simulation results show that our proposed hybrid technique achieves better reduction compared to the C-PTS technique at reduced computational complexity.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76063664","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726745
J. George, A. Benny
The paper proposes a novel methodology for calculating switching angles for a multilevel cascaded H-bridge converter connected to the solar panels. Here desired voltage is synthesized from separate solar panels connected to each series-connected bridges of the cascaded multilevel inverter. This is obtained by generating the suitable switching angles and their by achieving the required fundamental frequency and the lower harmonics can be minimized. Particle Swarm Optimization (PSO) algorithm is used to find the solution for the set of equations where the input voltages are the known variables and the switching angles are the unknown variables and the Artificial neural networks (ANN) is to determine the switching angles that correspond to the real-time values of the solar panel voltages. Switching pulse logic is designed for H-bridge. The effectiveness of the proposed system is validated by simulation using MATLAB/Simulink.
{"title":"Real-time harmonic minimization of multilevel inverters used in photovoltaic systems","authors":"J. George, A. Benny","doi":"10.1109/ICCCNT.2013.6726745","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726745","url":null,"abstract":"The paper proposes a novel methodology for calculating switching angles for a multilevel cascaded H-bridge converter connected to the solar panels. Here desired voltage is synthesized from separate solar panels connected to each series-connected bridges of the cascaded multilevel inverter. This is obtained by generating the suitable switching angles and their by achieving the required fundamental frequency and the lower harmonics can be minimized. Particle Swarm Optimization (PSO) algorithm is used to find the solution for the set of equations where the input voltages are the known variables and the switching angles are the unknown variables and the Artificial neural networks (ANN) is to determine the switching angles that correspond to the real-time values of the solar panel voltages. Switching pulse logic is designed for H-bridge. The effectiveness of the proposed system is validated by simulation using MATLAB/Simulink.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84443648","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 : 2013-07-04DOI: 10.1109/ICCCNT.2013.6726660
S. Janaki, S. Yellampalli
This paper presents the design and implementation of impulse distributed waveform generator which generates Ultra Wide Band pulses. The generated Ultra Wide Band pulses are in the frequency range of 1GHz to 8GHz. It uses time-interleaved impulse generators to generate the impulses. The trigger signal is supplied to the time-interleaved impulse generators with a specified delay. Frequency variation is achieved by tuning the trigger delay as well as tuning the width of the impulses generated. The trigger delay is varied from 30ps to 100ps, and the width of an impulse is varied from 80ps to 1ns. The generated impulses are shaped by a pulse shaping circuit, which performs pulse amplitude tuning. The generated impulses are combined using on-chip transmission line, which reduces the loss, as well as increase the bandwidth. The energy efficiency of the circuit is 15pJ/pulse which is considerably lesser than the existing system. Power consumption is reduced by introducing low voltage current mirror to the existing system which reduces the voltage levels of the circuit. The baseband data can be directly used as the trigger signal which explains OOK modulation capabilities.
{"title":"Design of impulse distributed waveform generator","authors":"S. Janaki, S. Yellampalli","doi":"10.1109/ICCCNT.2013.6726660","DOIUrl":"https://doi.org/10.1109/ICCCNT.2013.6726660","url":null,"abstract":"This paper presents the design and implementation of impulse distributed waveform generator which generates Ultra Wide Band pulses. The generated Ultra Wide Band pulses are in the frequency range of 1GHz to 8GHz. It uses time-interleaved impulse generators to generate the impulses. The trigger signal is supplied to the time-interleaved impulse generators with a specified delay. Frequency variation is achieved by tuning the trigger delay as well as tuning the width of the impulses generated. The trigger delay is varied from 30ps to 100ps, and the width of an impulse is varied from 80ps to 1ns. The generated impulses are shaped by a pulse shaping circuit, which performs pulse amplitude tuning. The generated impulses are combined using on-chip transmission line, which reduces the loss, as well as increase the bandwidth. The energy efficiency of the circuit is 15pJ/pulse which is considerably lesser than the existing system. Power consumption is reduced by introducing low voltage current mirror to the existing system which reduces the voltage levels of the circuit. The baseband data can be directly used as the trigger signal which explains OOK modulation capabilities.","PeriodicalId":6330,"journal":{"name":"2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84579707","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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