Pub Date : 2013-03-28DOI: 10.1109/NCC.2013.6488030
S. Das, S. Misra
A Wireless Sensor Network (WSN) is deployed primarily with the interest of collecting information about an area of interest or some events of interest occurring in that area. A WSN transmits the sensed information to the end users in the form of data-packets. The number of packets is directly proportional to the transmission rate of the nodes in the WSN. In this paper, a distributed self-management scheme for WSNs, named as Information Theoretic Self-Management (InTSeM), for WSNs, is proposed. The scheme helps the nodes in the network to adapt themselves with the changes in their environment and to select an appropriate transmission rate using an information theoretic metric called Symmetric Kullback-Leibler Distance. This dynamic selection of transmission rate conserves the energy of nodes while maintaining the quality of data. Extensive simulation results show that InTSeM performs better than other schemes with fixed transmission rate.
无线传感器网络(WSN)的部署主要是为了收集有关感兴趣区域的信息或该区域发生的一些感兴趣事件。WSN将感知到的信息以数据包的形式发送给终端用户。数据包的数量与WSN中节点的传输速率成正比。本文提出了一种面向WSNs的分布式自我管理方案——信息理论自我管理(Information - theory self-management, InTSeM)。该方案利用对称Kullback-Leibler距离(Symmetric Kullback-Leibler Distance)这一信息论度量来帮助网络中的节点适应环境的变化，并选择合适的传输速率。这种传输速率的动态选择在保证数据质量的同时节约了节点的能量。大量的仿真结果表明，在固定传输速率下，InTSeM的性能优于其他方案。
{"title":"Information theoretic self-management of Wireless Sensor Networks","authors":"S. Das, S. Misra","doi":"10.1109/NCC.2013.6488030","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488030","url":null,"abstract":"A Wireless Sensor Network (WSN) is deployed primarily with the interest of collecting information about an area of interest or some events of interest occurring in that area. A WSN transmits the sensed information to the end users in the form of data-packets. The number of packets is directly proportional to the transmission rate of the nodes in the WSN. In this paper, a distributed self-management scheme for WSNs, named as Information Theoretic Self-Management (InTSeM), for WSNs, is proposed. The scheme helps the nodes in the network to adapt themselves with the changes in their environment and to select an appropriate transmission rate using an information theoretic metric called Symmetric Kullback-Leibler Distance. This dynamic selection of transmission rate conserves the energy of nodes while maintaining the quality of data. Extensive simulation results show that InTSeM performs better than other schemes with fixed transmission rate.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131514648","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487898
Rajat Talak, N. Mehta
The timer-based selection scheme is a popular, simple, and distributed scheme that is used to select the best node from a set of available nodes. In it, each node sets a timer as a function of a local preference number called a metric, and transmits a packet when its timer expires. The scheme ensures that the timer of the best node, which has the highest metric, expires first. However, it fails to select the best node if another node transmits a packet within Δ s of the transmission by the best node. We derive the optimal timer mapping that maximizes the average success probability for the practical scenario in which the number of nodes in the system is unknown but only its probability distribution is known. We show that it has a special discrete structure, and present a recursive characterization to determine it. We benchmark its performance with ad hoc approaches proposed in the literature, and show that it delivers significant gains. New insights about the optimality of some ad hoc approaches are also developed.
{"title":"Optimal design of timer-based, distributed selection with unknown number of nodes","authors":"Rajat Talak, N. Mehta","doi":"10.1109/NCC.2013.6487898","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487898","url":null,"abstract":"The timer-based selection scheme is a popular, simple, and distributed scheme that is used to select the best node from a set of available nodes. In it, each node sets a timer as a function of a local preference number called a metric, and transmits a packet when its timer expires. The scheme ensures that the timer of the best node, which has the highest metric, expires first. However, it fails to select the best node if another node transmits a packet within Δ s of the transmission by the best node. We derive the optimal timer mapping that maximizes the average success probability for the practical scenario in which the number of nodes in the system is unknown but only its probability distribution is known. We show that it has a special discrete structure, and present a recursive characterization to determine it. We benchmark its performance with ad hoc approaches proposed in the literature, and show that it delivers significant gains. New insights about the optimality of some ad hoc approaches are also developed.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134162472","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487973
A. Deshmukh, A. Joshi, T. Tirodkar, K. Ray
The broadband microstrip antenna is more commonly realized by using multi-resonator gap-coupled technique or by cutting the slot inside the patch. The gap-coupled configuration increases the antenna size whereas the slot cut designs maintains the low profile nature of the antenna and also adds to the bandwidth. The slot is said to introduce a mode near the fundamental mode resonance frequency of the patch and increases the bandwidth. In this paper, broadband proximity fed E-shaped microstrip antenna is discussed. The gap-coupled configuration of E-shaped antenna with rectangular microstrip antennas is proposed. This gap-coupled configuration gives a bandwidth of 450 MHz at center frequency of around 1000 MHz with broadside radiation pattern and gain of more than 7 dBi over the bandwidth. Further gap-coupled configuration of pair of rectangular slot cut rectangular patches with E-shaped antenna is proposed. This configuration yields a bandwidth of more than 550 MHz with broadside radiation pattern and peak gain very close to 9.5 dBi.
{"title":"Broadband gap-coupled slot cut rectangular microstrip antennas","authors":"A. Deshmukh, A. Joshi, T. Tirodkar, K. Ray","doi":"10.1109/NCC.2013.6487973","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487973","url":null,"abstract":"The broadband microstrip antenna is more commonly realized by using multi-resonator gap-coupled technique or by cutting the slot inside the patch. The gap-coupled configuration increases the antenna size whereas the slot cut designs maintains the low profile nature of the antenna and also adds to the bandwidth. The slot is said to introduce a mode near the fundamental mode resonance frequency of the patch and increases the bandwidth. In this paper, broadband proximity fed E-shaped microstrip antenna is discussed. The gap-coupled configuration of E-shaped antenna with rectangular microstrip antennas is proposed. This gap-coupled configuration gives a bandwidth of 450 MHz at center frequency of around 1000 MHz with broadside radiation pattern and gain of more than 7 dBi over the bandwidth. Further gap-coupled configuration of pair of rectangular slot cut rectangular patches with E-shaped antenna is proposed. This configuration yields a bandwidth of more than 550 MHz with broadside radiation pattern and peak gain very close to 9.5 dBi.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133015567","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 : 2013-03-28DOI: 10.1109/NCC.2013.6488041
G. Ramani, Niraj Kumar, B. K. Das
Unauthorized interception in transmission of multimedia data is very substantial, whether it is intentional or unintentional. With the help of Encryption system, a safe and secured multimedia link can be obtained. In this paper, the popular symmetric encryption algorithms such as DES, 3DES and AES have been applied on the multimedia to avoid any information breach while these data is placed on an open communication network. Concurrently, to counter the time limitation for extensive input data with complete content cipher-ability, a novel symmetric encryption algorithm is developed which is subsequently implemented to cipher the multimedia content. In this paper, implementation and experimental analysis of all the above mentioned algorithms has been realized for different multimedia data. A comparative analysis among them has been performed and represented in a tabular form. Further, the systematic conclusion has been stated based on the results.
{"title":"Comprehensive multimedia encryption system generalization and comparison","authors":"G. Ramani, Niraj Kumar, B. K. Das","doi":"10.1109/NCC.2013.6488041","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488041","url":null,"abstract":"Unauthorized interception in transmission of multimedia data is very substantial, whether it is intentional or unintentional. With the help of Encryption system, a safe and secured multimedia link can be obtained. In this paper, the popular symmetric encryption algorithms such as DES, 3DES and AES have been applied on the multimedia to avoid any information breach while these data is placed on an open communication network. Concurrently, to counter the time limitation for extensive input data with complete content cipher-ability, a novel symmetric encryption algorithm is developed which is subsequently implemented to cipher the multimedia content. In this paper, implementation and experimental analysis of all the above mentioned algorithms has been realized for different multimedia data. A comparative analysis among them has been performed and represented in a tabular form. Further, the systematic conclusion has been stated based on the results.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131110283","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 : 2013-03-28DOI: 10.1109/NCC.2013.6488045
S. F. Hasan, Nazmul H. Siddique, S. Chakraborty
The objective of this paper is to investigate whether the vehicular traffic patterns affect the undesired ‘disruption’ in WLAN-based vehicular communication. Stochastic models are first developed to describe connectivity patterns in normal and dense traffic conditions. Hidden Markov model techniques are then used to measure the variation in estimated disruption with changing traffic conditions.
{"title":"Traffic patterns affecting disruption in vehicular communication","authors":"S. F. Hasan, Nazmul H. Siddique, S. Chakraborty","doi":"10.1109/NCC.2013.6488045","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488045","url":null,"abstract":"The objective of this paper is to investigate whether the vehicular traffic patterns affect the undesired ‘disruption’ in WLAN-based vehicular communication. Stochastic models are first developed to describe connectivity patterns in normal and dense traffic conditions. Hidden Markov model techniques are then used to measure the variation in estimated disruption with changing traffic conditions.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132330244","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487919
R. Xu, Y. Jin, M. Miao, C. Nguyen
Development of UWB CMOS transmitters using carrier and impulse techniques is presented. The carrier transmitter designed using a 0.18-µm CMOS process adopts a double-stage switching to enhance RF-power efficiency and reduce dc-power consumption and circuit complexity. Measurement results show that the generated UWB signal has variable 10-dB signal bandwidths from 0.5 to 4 GHz and tunable central frequency covering the entire UWB frequency range of 3.1 to 10.6 GHz. The impulse transmitter designed using a 0.25-µm CMOS process can generate and transmit both monocycle pulses from 140 to 350 ps and impulses from 100 to 300 ps.
{"title":"UWB CMOS transmitters for UWB communications","authors":"R. Xu, Y. Jin, M. Miao, C. Nguyen","doi":"10.1109/NCC.2013.6487919","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487919","url":null,"abstract":"Development of UWB CMOS transmitters using carrier and impulse techniques is presented. The carrier transmitter designed using a 0.18-µm CMOS process adopts a double-stage switching to enhance RF-power efficiency and reduce dc-power consumption and circuit complexity. Measurement results show that the generated UWB signal has variable 10-dB signal bandwidths from 0.5 to 4 GHz and tunable central frequency covering the entire UWB frequency range of 3.1 to 10.6 GHz. The impulse transmitter designed using a 0.25-µm CMOS process can generate and transmit both monocycle pulses from 140 to 350 ps and impulses from 100 to 300 ps.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130554060","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487983
Ashwin Bellur, H. Murthy
This work addresses the task of tonic pitch identification in Indian classical music. The drone or the tambura establishes the tonic in Indian classical music. A cepstrum based pitch extraction technique is proposed to identify the tuning of the tambura. We show that by identifying the musical note Sadja in the lower octave of a performance, the pitch of the tonic can be identified accurately. We also show that by estimating pitch of low energy frames, tonic can be identified with greater speed and higher accuracy. In order to further enhance the speed and also illustrate the ubiquitous nature of the tonic, a Non-Negative Matrix Factorization (NMF) technique based method is developed to identify tonic. The proposed methods are validated by testing on a large varied dataset and accuracies close to 100% is reported.
{"title":"A cepstrum based approach for identifying tonic pitch in Indian classical music","authors":"Ashwin Bellur, H. Murthy","doi":"10.1109/NCC.2013.6487983","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487983","url":null,"abstract":"This work addresses the task of tonic pitch identification in Indian classical music. The drone or the tambura establishes the tonic in Indian classical music. A cepstrum based pitch extraction technique is proposed to identify the tuning of the tambura. We show that by identifying the musical note Sadja in the lower octave of a performance, the pitch of the tonic can be identified accurately. We also show that by estimating pitch of low energy frames, tonic can be identified with greater speed and higher accuracy. In order to further enhance the speed and also illustrate the ubiquitous nature of the tonic, a Non-Negative Matrix Factorization (NMF) technique based method is developed to identify tonic. The proposed methods are validated by testing on a large varied dataset and accuracies close to 100% is reported.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115686735","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487960
Sarbani Ghose, R. Bose
Achieving security at the physical layer in the presence of eavesdropper has always remained a critical issue under adverse channel conditions. The present scenario has relay with multiple antenna to combat channel effects. We have designed system model so that the nodes cooperate among themselves for the available power, with the aim to minimize the total transmit power, under a secrecy rate constraint. Here the relay sends out a jamming signal in order to confuse the eavesdropper. We assume correlated fading in the relay channels. The channel is modeled taking into account the large scale fading and small scale fading as well, through inclusion of path loss exponent and Rayleigh fading effects. The optimal power requirements for the source and the jammers are determined subject to the constraint of secrecy rate. The power allocation also depends upon path loss exponent, distance and fading parameters. The corresponding relaying regions have been plotted for real, equal and real, unequal roots of source power. Real, equal roots of source power are independent of position of relay. From the simulations we observe that the region expands when relays are away from the source.
{"title":"Power allocation strategy using node cooperation for transmit power minimization under correlated fading","authors":"Sarbani Ghose, R. Bose","doi":"10.1109/NCC.2013.6487960","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487960","url":null,"abstract":"Achieving security at the physical layer in the presence of eavesdropper has always remained a critical issue under adverse channel conditions. The present scenario has relay with multiple antenna to combat channel effects. We have designed system model so that the nodes cooperate among themselves for the available power, with the aim to minimize the total transmit power, under a secrecy rate constraint. Here the relay sends out a jamming signal in order to confuse the eavesdropper. We assume correlated fading in the relay channels. The channel is modeled taking into account the large scale fading and small scale fading as well, through inclusion of path loss exponent and Rayleigh fading effects. The optimal power requirements for the source and the jammers are determined subject to the constraint of secrecy rate. The power allocation also depends upon path loss exponent, distance and fading parameters. The corresponding relaying regions have been plotted for real, equal and real, unequal roots of source power. Real, equal roots of source power are independent of position of relay. From the simulations we observe that the region expands when relays are away from the source.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114797169","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 : 2013-03-28DOI: 10.1109/NCC.2013.6487937
Raju Ranjan, Rajesh Bhatt, Sumana Gupta, K. Venkatesh
Recently in signal processing, data models based on sparsity prior have drawn much attention. Using this prior several state-of-the-art result is produced in the case of image and video processing based applications. Furthermore, learning the model parameters greatly improves the performance of a given application. We have studied the learning of such models in relevant feature space, and applied them for color image texture segmentation. We have proposed a scheme for construction of feature vectors for dictionary learning in a sparse framework that enhances the performance of color segmentation. Experimental results validate the scheme adopted, in terms of segmentation efficiency.
{"title":"Sparsity based segmentation in hybrid color space","authors":"Raju Ranjan, Rajesh Bhatt, Sumana Gupta, K. Venkatesh","doi":"10.1109/NCC.2013.6487937","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487937","url":null,"abstract":"Recently in signal processing, data models based on sparsity prior have drawn much attention. Using this prior several state-of-the-art result is produced in the case of image and video processing based applications. Furthermore, learning the model parameters greatly improves the performance of a given application. We have studied the learning of such models in relevant feature space, and applied them for color image texture segmentation. We have proposed a scheme for construction of feature vectors for dictionary learning in a sparse framework that enhances the performance of color segmentation. Experimental results validate the scheme adopted, in terms of segmentation efficiency.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120847114","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 : 2013-03-28DOI: 10.1109/NCC.2013.6488039
R. Sangeetha, D. Chadha, V. Chandra
In this paper we present the performance of 4×4 optical data vortex optical interconnection network in view of BER characteristics. Cascading of SOA based switching nodes is simulated.
本文从误码率的角度分析了4×4光数据旋涡互连网络的性能。模拟了基于SOA的交换节点级联。
{"title":"4×4 optical data vortex switch fabric: BER analysis","authors":"R. Sangeetha, D. Chadha, V. Chandra","doi":"10.1109/NCC.2013.6488039","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488039","url":null,"abstract":"In this paper we present the performance of 4×4 optical data vortex optical interconnection network in view of BER characteristics. Cascading of SOA based switching nodes is simulated.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121073016","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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