发布求助
文献互助 智能选刊 最新文献

2013 National Conference on Communications (NCC)最新文献

筛选
英文 中文
Power allocation strategy using node cooperation for transmit power minimization under correlated fading 基于节点协作的相关衰落下最小发射功率分配策略
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487960
Sarbani Ghose, R. Bose
{"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}
引用次数: 2
Analysis of lombard and angry speech using Gaussian Mixture Models and KL divergence 基于高斯混合模型和KL散度的愤怒语和愤怒语分析
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487985
Shubham Mittal, Swati Vyas, S. Prasanna
{"title":"Analysis of lombard and angry speech using Gaussian Mixture Models and KL divergence","authors":"Shubham Mittal, Swati Vyas, S. Prasanna","doi":"10.1109/NCC.2013.6487985","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487985","url":null,"abstract":"Recognition of expressions from speech has emerged as an important research area in the recent past. However, the scientific community still faces problems in differentiating between angry and lombard speech. The objective of this work is to analyze the differences between the Lombard and angry speech using the features representing the excitation source of speech production. The instantaneous fundamental frequency, the strength of excitation and loudness measure, reflecting the sharpness of the impulse-like excitation around the epochs are used as excitation source features. The distributions curves of these three parameters are next plotted. We employ the concept of Gaussian Mixture Models (GMMs) and KL divergence (a measure of relative entropy) to calculate an exact measure of difference between angry, lombard and neutral speech with context to the aforementioned parameters and successfully show differences among the Lombard and angry speech signals at the excitation source level.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"11 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":"127045715","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
Design of a practical dual-band planar monopole antenna for WLAN and WiMAX applications 用于WLAN和WiMAX应用的实用双频平面单极天线的设计
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487969
S. Venkatrami Reddy, Aditya Singh, Yadu Nath K., M. Akhtar
{"title":"Design of a practical dual-band planar monopole antenna for WLAN and WiMAX applications","authors":"S. Venkatrami Reddy, Aditya Singh, Yadu Nath K., M. Akhtar","doi":"10.1109/NCC.2013.6487969","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487969","url":null,"abstract":"The design of a microstrip based compact dual band Monopole Antenna for Wireless Local Area Network (WLAN) and WiMAX (Wi-Fi) applications is presented. The antenna consists of two symmetric twisted arms fed by a 50 Ω microstrip line. The basic design and the numerical simulation of the proposed antenna are carried out using a full wave electromagnetic simulator, the CST Microwave Studio. Various design parameters are optimized for a better performance, and a detailed parametric analysis is also carried out in order to study the effects of various parameters. The antenna is designed to operate at two resonating frequencies corresponding to the ISM bands of 2.4 GHz and 5.2 GHz, respectively. The antenna is fabricated after freezing its design with an optimized size of 28×23 mm2, and its return loss is measured with the help of a network analyser. The measured data match reasonably well with the simulated values. The proposed antenna is seen to have very low return loss (S11< −15 dB) at both the operating frequencies, and a good radiation characteristics.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"18 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":"125717407","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
Outage probability of Amplify-and-Forward two-way cooperative systems in presence of multiple co-channel interferers 存在多个同信道干扰时放大前向双向合作系统的中断概率
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487961
A. Mandpura, S. Prakriya, R. Mallik
{"title":"Outage probability of Amplify-and-Forward two-way cooperative systems in presence of multiple co-channel interferers","authors":"A. Mandpura, S. Prakriya, R. Mallik","doi":"10.1109/NCC.2013.6487961","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487961","url":null,"abstract":"We consider a two-way relaying (TWR) system over Rayleigh fading channels. An accurate closed form expression for its outage performance is derived assuming a fixed-gain relay. Unlike previous works that consider interference only at the relay or at the terminals, we assume interference at all three terminals of the system. Computer simulations demonstrate that the derived expressions are accurate at low and medium SNRs.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"17 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":"125655549","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: 11
Significance of the MUSIC-group delay method in an ICA-Beamforming framework for speech separation in multi source environments ica波束形成框架中MUSIC-group延迟方法在多源环境下语音分离中的意义
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487992
L. Kumar, Kushagra Singhal, R. Sinha, R. Hegde
{"title":"Significance of the MUSIC-group delay method in an ICA-Beamforming framework for speech separation in multi source environments","authors":"L. Kumar, Kushagra Singhal, R. Sinha, R. Hegde","doi":"10.1109/NCC.2013.6487992","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487992","url":null,"abstract":"The performance of an ICA-Beamforming framework in multi source environments is often limited by the resolution of the direction of arrival (DOA) estimation and by permutation errors. In this paper a framework that addresses these issues, using the MUSIC-Group delay method of DOA estimation has been described. A new cost function defined for this purpose iteratively computes the correlation between the signals recovered using ICA and beamforming methods with signals recovered from the MUSIC-Group delay method as a reference. This cost function is then used to select the demixing matrix at each iteration until a convergence criterion is met. Source separation is then carried out using the final demixing matrix. Since the MUSIC-Group delay method exhibits high resolution, the DOA estimates obtained can be sorted more effectively to solve the permutation problems in ICA. TIMIT speech data is spatialized under a reverberant environment at various direct-to-reverberant energy ratio (DRR) to obtain S-TIMIT data. Experiments on speaker dependent large vocabulary speech recognition are conducted for a mixture of two speakers from the S-TIMIT data. The word error rates corresponding to the target and the non-target speaker using the proposed method indicate reasonable improvements when compared to conventional methods like ICA and ICA-Beamforming methods.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"30 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":"128988681","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: 0
Speaker dependent, speaker independent and cross language emotion recognition from speech using GMM and HMM 基于GMM和HMM的说话人依赖、说话人独立和跨语言情感识别
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487998
Manav Bhaykar, Jainath Yadav, K. S. Rao
{"title":"Speaker dependent, speaker independent and cross language emotion recognition from speech using GMM and HMM","authors":"Manav Bhaykar, Jainath Yadav, K. S. Rao","doi":"10.1109/NCC.2013.6487998","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487998","url":null,"abstract":"In this paper we have analysed emotion recognition performance in speaker dependent, text dependent, text independent, speaker independent, language dependent and cross language emotion recognition from speech. These studies were carried out using Gaussian Mixture Model (GMM) and Hidden Markov Model (HMM) as classification models. IITKGP-SESC and IITKGP-SEHSC emotional speech corpora are used for carried out these studies. The emotions considered in this study are anger, disgust, fear, happy, neutral, sarcastic, and surprise. Mel Frequency Cepstral Coefficients (MFCCs) features are used for identifying the emotions. Emotion recognition performance of speaker dependent mode is better than speaker independent and cross language modes. From the results it is observed that emotion recognition performance depends on the speaker and language.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"37 4 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":"130420456","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: 41
An efficient methodology for parallel concatenation of LDPC codes with reduced complexity and decoding delay 一种有效的LDPC码并行串接方法，降低了复杂度和译码延迟
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487947
R. P. Kumar, R. S. Kshetrimayum
{"title":"An efficient methodology for parallel concatenation of LDPC codes with reduced complexity and decoding delay","authors":"R. P. Kumar, R. S. Kshetrimayum","doi":"10.1109/NCC.2013.6487947","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487947","url":null,"abstract":"Parallel concatenated Gallager codes (PCGC) is a class of concatenated codes based on LDPC component codes. Conventional attempts for concatenating LDPC in parallel using the well known ‘Turbo code structure’ without interleavers have not been widely successful, because of its performance limitation and decoding delay. In this paper we present an efficient methodology for parallel concatenation of LDPC codes. We show that proposed methodology for PCGC outperforms existing PCGC in terms of BER performance in both AWGN and flat fading Rayleigh channels. We also present that proposed PCGC outperforms existing PCGC in terms of complexity as well as decoding delay.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"1 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":"130848258","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: 6
A novel optical control plane for switching a limited range wavelength converter based electro-optical hybrid node in translucent WDM optical networks 半透明WDM光网络中基于有限范围波长转换器的电光混合节点切换的新型光控制平面
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6488037
S. Iyer, Shree Prakash Singh
{"title":"A novel optical control plane for switching a limited range wavelength converter based electro-optical hybrid node in translucent WDM optical networks","authors":"S. Iyer, Shree Prakash Singh","doi":"10.1109/NCC.2013.6488037","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488037","url":null,"abstract":"In a translucent wavelength division multiplexed (WDM) network, development of an optical control plane (OCP) that is aware of the location and number of available regenerators and all-optical wavelength converters (AOWCs) is of paramount importance. However, generalized multi-protocol label switching (GMPLS) protocol suite does not consider the distribution of regenerator and AOWC information to all network nodes. In this paper, we propose an OCP architecture which disseminates regenerator and AOWC information to all the network nodes. The Physical Layer Impairment-Signal Quality Aware Routing and Wavelength Assignment (PLISQARWA) algorithm is employed for RWA. The electro-optical hybrid translucent nodes have been employed which, from a practical perspective, are based on limited range wavelength converters (LRWCs). Performance of the proposed limited range OCP (LR-P-OCP), is compared with the full range OCP (FR-P-OCP) and the hybrid OCP (H-OCP) approach.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"29 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":"114315983","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: 2
Statistics based energy efficient caching decisions for IPTV services 基于统计的IPTV服务节能缓存决策
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6488025
Amardeep Dewangan, D. Jalihal
{"title":"Statistics based energy efficient caching decisions for IPTV services","authors":"Amardeep Dewangan, D. Jalihal","doi":"10.1109/NCC.2013.6488025","DOIUrl":"https://doi.org/10.1109/NCC.2013.6488025","url":null,"abstract":"Rapid growth of video traffic and the consequent rise in the Internet infrastructure has had an impact on the global energy consumption. When a user request for a video, the total power consumed includes reading and transporting data from the data center to the end user. Video caching provides an effective solution to the problem of an increased power consumption. While video caching reduces the transportation power it increases storage power. This paper analyzes video caching mechanism using principles of stochastic process and an attempt has been made to find appropriate caching time and the effective caching size that will reduce the power consumption. Further, power consumption at different caching sizes is analyzed and compared with best possible caching size which consumes minimum power.","PeriodicalId":202526,"journal":{"name":"2013 National Conference on Communications (NCC)","volume":"6 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":"122051393","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: 4
Performance analysis of dual-‘switch and stay’ combiner over correlated KG fading channels 双“开关与停留”合成器在相关KG衰落信道上的性能分析
2013 National Conference on Communications (NCC) Pub Date : 2013-03-28 DOI: 10.1109/NCC.2013.6487936
M. R., P. R. Sahu
{"title":"Performance analysis of dual-‘switch and stay’ combiner over correlated KG fading channels","authors":"M. R., P. R. Sahu","doi":"10.1109/NCC.2013.6487936","DOIUrl":"https://doi.org/10.1109/NCC.2013.6487936","url":null,"abstract":"Switch and Stay combiner (SSC) is a diversity combiner which can be used in practice as it offers less switching transition compared to popular selection diversity combiner. Performance of a dual Switch and Stay combining diversity receiver is analyzed in correlated generalized-K (KG) fading channels. Mathematical expressions for a number of performance measures such as the probability density function of the SSC output SNR, average output SNR, outage probability and amount of fading have been presented. Using the MGF-based approach, the expression for average bit error rate of non-coherent modulation scheme is also obtained. Effects of fading and correlation on the combiner performance is studied through numerical and simulation techniques. Numerical results are found to be closely matching with the simulation results.","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":"127214591","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: 11
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信