2011 International Conference on Devices and Communications (ICDeCom)最新文献_第7页

Texture Retrieval System Using Intuitionistic Fuzzy Set Theory 基于直觉模糊集理论的纹理检索系统

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738490

S. S. Tripathy, R. Shekhar, R. Kumar

引用次数: 6

Prompt Indian Coin Recognition with Rotation Invariance Using Image Subtraction Technique 基于图像减法技术的旋转不变性印度硬币快速识别

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738496

Vaibhav Gupta, Rachit Puri, Monir Verma

引用次数: 29

Modified Fractal Shape Antenna for Wideband Application 宽带应用的改进分形天线

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738509

Y. Choukiker, Sujeet Rai, S. K. Behera

引用次数: 7

DBET: Demand Based Energy Efficient Topology for MANETs 基于需求的manet节能拓扑

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738558

Hari Prabhat Gupta, S. Rao

引用次数: 8

Rate Optimization Scheme for Node Level Congestion in Wireless Sensor Networks 无线传感器网络节点级拥塞的速率优化方案

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738548

N. Prabakaran, B. Shanmuga Raja, R. Prabakaran, V. R. Sarma Dhulipala

{"title":"Rate Optimization Scheme for Node Level Congestion in Wireless Sensor Networks","authors":"N. Prabakaran, B. Shanmuga Raja, R. Prabakaran, V. R. Sarma Dhulipala","doi":"10.1109/ICDECOM.2011.5738548","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738548","url":null,"abstract":"The Application specific wireless sensor network differs basically from the general data network. It focuses on tight communication but restricted in storage, lifetime, power and energy. The WSNs consists of unbelievable network load and it leads to energy wastage and packet loss. Many of the existing concepts are developed for link level congestion control. The Rate optimization technique for node level congestion will assist to control the traffic at node level. Except source and sink node the remaining nodes may participate in forwarding the packets towards the communication direction. The rate based adjustment technique is applied to avoid packet dropping in order to save the network resources. We are proposing this scheme to avoid the buffer overflow and it is not taking too much energy consumption in the communication. This scheme will assist to improve the throughput, efficiency and resource saving. Node level congestion control is effectively needed for WSN, because the node deployment can be anywhere. We are Introducing this scheme using the network simulators extended tool called mannasim.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134294415","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}

引用次数: 10

Effect of Low Bit Rate Speech Coding on Epoch Extraction 低比特率语音编码对历元提取的影响

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738535

A. Vuppala, Jainath Yadav, S. Chakrabarti, K. S. Rao

{"title":"Effect of Low Bit Rate Speech Coding on Epoch Extraction","authors":"A. Vuppala, Jainath Yadav, S. Chakrabarti, K. S. Rao","doi":"10.1109/ICDECOM.2011.5738535","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738535","url":null,"abstract":"Speech coding is one of the major degradation involved in building the speech systems in mobile environment. In this paper, we are exploring the effect of low bit rate speech coding on the accuracy of detection of epochs. Epoch is referred as the instant of significant excitation of the vocal-tract system during production of speech. Many speech applications depend on the the accurate estimation of the epoch locations. Epoch extraction from speech signal is challenging due to time-varying characteristics of the excitation source and vocal-tract system. For determining the epochs, two recently developed accurate methods (i) zero frequency filter (ZFF) (ii) Dynamic programming projected phase slope (DYPSA) are used. Most of the epoch extraction methods except ZFF method, attempt to remove the characteristics of the vocal-tract system, in order to emphasize the excitation characteristics in the residual. ZFF method extracts the epoch locations directly from the speech signals using impulse like nature of excitation. Speech coders used in this study are GSM full rate (ETSI 06.10), CELP (FS-1016), and MELP (TI 2.4 kbps). Performance of epoch extraction methods is evaluated using CMU-Arctic data using the epoch locations from electro-glottograph as reference.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129239593","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}

引用次数: 12

Performance of Routing Protocols for Beacon-Enabled IEEE 802.15.4 WSNs with Different Duty Cycle 不同占空比IEEE 802.15.4无线传感器网络信标路由协议性能研究

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738549

Vinay Kumar, S. Tiwari

{"title":"Performance of Routing Protocols for Beacon-Enabled IEEE 802.15.4 WSNs with Different Duty Cycle","authors":"Vinay Kumar, S. Tiwari","doi":"10.1109/ICDECOM.2011.5738549","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738549","url":null,"abstract":"Routing in WSNs (Wireless Sensor Networks) is very challenging due to some special characteristics that differentiate these networks from other wireless networks like cellular networks, mobile ad-hoc network etc. The difference is due to scalability, careful resource management etc. Sensor nodes are generally battery powered, are expected to be remotely deployed, and operated autonomously in unattended environments. ZigBee, a communication standard for LR-WPAN (Low Rate -Personal Area Networks), has low power consumption, complexity and cost. ZigBee uses the IEEE 802.15.4 standard as its communication protocol for Medium Access Control (MAC) layer and physical (PHY) layer. The IEEE 802.15.4 MAC standard achieves duty cycle operation by setting two system parameters, macBeaconOrder (BO) and macSuperframeOrder (SO), to achieve low power consumption for different value of duty cycle. In this Paper we have analyzed cross layer (MAC/PHY) approach for wireless sensor network scenario with different routing protocols: AODV, DYMO and XMESH under different percentage of duty cycle (DC). We have analyzed that what routing protocols with what percentage of Duty Cycle provide improvement over other routing protocols in WSNs. We have found value of attributes like energy consumption in transmit mode, energy consumption in received mode, energy consumption in idle mode, percentage of time in transmit mode (nodes comparison), percentage of time in received mode (nodes comparison) and total power consumption.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122336566","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}

引用次数: 23

Adaptive MPPT Algorithm for a Distributed Wireless Photovoltaic Based Irrigation System 分布式无线光伏灌溉系统的自适应MPPT算法

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738551

M. Goudar, B. Patil, V. Kumar

{"title":"Adaptive MPPT Algorithm for a Distributed Wireless Photovoltaic Based Irrigation System","authors":"M. Goudar, B. Patil, V. Kumar","doi":"10.1109/ICDECOM.2011.5738551","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738551","url":null,"abstract":"Tracking the maximum power point (MPP) of a photovoltaic array is an essential part of a photovoltaic (PV) system. PV system performance average losses are of about 20%-25% in electricity production. The causes are mismatching losses, partial shadows, variations in current - voltage characteristics of PV modules due to manufacturing processes, differences in the orientations and inclinations of solar surfaces, and temperature effects. A hybrid and adaptive Maximum Peak Power Tracking (MPPT) Algorithms is proposed to track the peak power delivered by a solar panel under partial shading and fast changing environmental conditions to maximize the solar energy harvested from the Photovoltaic modules. The simulation results of MATLAB and PSpice have been compared with earlier methods. Improvements in the starting characteristic performance, tracking effect and the other undesired effects of the shadows like the avoidance of multiple maxima have been obtained. Finally attempt is made to propose a wireless Photovoltaic based irrigation system using MSP430 microcontroller as it enables system to simultaneously interface to analog signals, sensors and digital components while consuming ultra low power.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121732870","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}

引用次数: 7

Block and Partial Update Sign Normalized LMS Based Adaptive Decision Feedback Equalization 基于块和部分更新符号归一化LMS的自适应决策反馈均衡

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738469

Ch. Sumanth Kumar, D. Madhavi, N. Jyothi, K. Reddy

{"title":"Block and Partial Update Sign Normalized LMS Based Adaptive Decision Feedback Equalization","authors":"Ch. Sumanth Kumar, D. Madhavi, N. Jyothi, K. Reddy","doi":"10.1109/ICDECOM.2011.5738469","DOIUrl":"https://doi.org/10.1109/ICDECOM.2011.5738469","url":null,"abstract":"In this paper, a simple and efficient Block and partial update sign normalized LMS (BPSNLMS) algorithm is proposed for the decision feedback equalization. The proposed implementation is suitable for applications requiring long adaptive equalizers, as is the case in several high-speed wireless communication systems. The proposed algorithm yields good bit error rate performance over a reasonable signal to noise ratio. In this scheme the incoming data is partitioned into non overlapping blocks and the filtering operation has been performed in frequency domain with FFT (overlap and save method). In each iteration, only a part of the filter coefficients are updated so that it reduces the computational complexity and improves speed of operation. The signed versions of LMS algorithm makes equalization techniques multiplication free and facilitates efficient digital implementation using shift registers. The frequency domain representation facilitates, easier to choose step size with which the proposed algorithm convergent in the mean squared sense, whereas in the time domain it requires the information on the largest eigen value of the correlation matrix of the input sequence. Simulation studies shows that the proposed realization gives better performance compared to existing realizations in terms of convergence rate.","PeriodicalId":290448,"journal":{"name":"2011 International Conference on Devices and Communications (ICDeCom)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127649702","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}

引用次数: 3

Discriminant Analysis for Epileptic Seizure Detection 判别分析检测癫痫发作

2011 International Conference on Devices and Communications (ICDeCom) Pub Date : 2011-03-24 DOI: 10.1109/ICDECOM.2011.5738454

T. Fathima, Y. Khan, M. Bedeeuzzaman, Omar Farooq

引用次数: 19