2011 International Conference on Communications and Signal Processing最新文献_第10页

Predictor performance of decision-directed channel estimation in 3GPP MIMO channels 决策导向的3GPP MIMO信道估计的预测器性能

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739327

P. Beinschob, U. Zolzer

引用次数: 0

Determination of position of detonation of artillery shells 炮弹起爆位置的测定

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739304

J. Jena, T. Kishore Kumar

引用次数: 0

Free breathing cardiac perfusion MRI reconstruction using a sparse and low rank model: Validation with the Physiologically Improved NCAT phantom 使用稀疏和低秩模型的自由呼吸心脏灌注MRI重建:与生理性改进的NCAT幻影验证

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739310

Sajan Goud, M. Jacob

{"title":"Free breathing cardiac perfusion MRI reconstruction using a sparse and low rank model: Validation with the Physiologically Improved NCAT phantom","authors":"Sajan Goud, M. Jacob","doi":"10.1109/ICCSP.2011.5739310","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739310","url":null,"abstract":"We recently proposed an accelerated dynamic magnetic resonance imaging (MRI) reconstruction algorithm that exploits the underlying low rank and sparse properties of the data to achieve highly accelerated reconstructions. In this paper, we validate our algorithm in the context of dynamic free breathing cardiac Perfusion MRI on the Physiologically Improved Non Uniform Cardiac Torso Phantom, PINCAT phantom. The practical utilities of our scheme in providing significantly better reconstructions at higher accelerations in comparison to existing methods are studied. We demonstrate that our scheme do not have trade offs with accurate temporal modeling and spatial quality unlike the existing low rank based schemes. Our results also show the capability of our scheme to achieve better reconstruction qualities at high accelerations in comparison to using only the low rank or sparsity properties individually. We argue that the speed up obtained by our scheme could be capitalized in perfusion imaging to provide better spatio-temporal resolutions and volume coverage while the subject is freely breathing.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"32 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":"134043737","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: 1

Artificial bandwidth extension of narrowband speech using Gaussian Mixture Model 基于高斯混合模型的窄带语音人工带宽扩展

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739348

D. Murali Mohan, Dileep B. Karpur, M. Narayan, J. Kishore

引用次数: 13

Full wave analysis of a novel multifractal multiband antenna using 3D-FDTD approach 一种新型多重分形多波段天线的三维时域有限差分全波分析

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739315

Vivek Dhoot, Sanjeev Gupta

引用次数: 0

Dielectric loss computation of multilayer Coplanar Waveguide 多层共面波导介质损耗计算

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739352

Paramjeet Singh, A. K. Verma

引用次数: 3

Low power Viterbi Decoder by modified ACSU architecture and clock gating method 采用改进ACSU结构和时钟门控方法的低功耗维特比解码器

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739371

Sunil P. Joshi, R. Paily

引用次数: 9

Timing consideration in synchronous system level design 同步系统级设计中的时序考虑

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739379

S. Siddamal, R. Banakar, B. C. Jinaga

引用次数: 0

Speaker independent continuous speech and isolated digit recognition using VQ and HMM 基于VQ和HMM的独立于说话人的连续语音和隔离数字识别

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739300

A. Revathi, Y. Venkataramani

{"title":"Speaker independent continuous speech and isolated digit recognition using VQ and HMM","authors":"A. Revathi, Y. Venkataramani","doi":"10.1109/ICCSP.2011.5739300","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739300","url":null,"abstract":"The main objective of this paper is to explore the effectiveness of perceptual features for performing isolated digits and continuous speech recognition. The proposed perceptual features are captured and code book indices are extracted. Expectation maximization algorithm is used to generate HMM models for the speeches. Speech recognition system is evaluated on clean test speeches and the experimental results reveal the performance of the proposed algorithm in recognizing isolated digits and continuous speeches based on maximum log likelihood value between test features and HMM models for each speech. Performance of these features is tested on speeches randomly chosen from “TI Digits_1”, “TI Digits_2” and “TIMIT” databases. This algorithm is tested for VQ and combination of VQ and HMM speech modeling techniques. Perceptual linear predictive cepstrum yields the accuracy of 86% and 93% for speaker independent isolated digit recognition using VQ and combination of VQ & HMM speech models respectively. This feature also gives 99% and 100% accuracy for speaker independent continuous speech recognition by using VQ and the combination of VQ & HMM speech modeling techniques.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"63 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":"116278919","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: 33

Implementation of speaker verification system using Fuzzy Wavelet Network 用模糊小波网络实现说话人验证系统

2011 International Conference on Communications and Signal Processing Pub Date : 2011-03-24 DOI: 10.1109/ICCSP.2011.5739361

P. Shanmugapriya, Y. Venkataramani

{"title":"Implementation of speaker verification system using Fuzzy Wavelet Network","authors":"P. Shanmugapriya, Y. Venkataramani","doi":"10.1109/ICCSP.2011.5739361","DOIUrl":"https://doi.org/10.1109/ICCSP.2011.5739361","url":null,"abstract":"A Fuzzy Wavelet network (FWN) is proposed to model the characteristics of a speaker in an automatic speaker verification system in this paper. The neural network using wavelet as activation function is wavelet network (Wavenet). Wavenet has the ability to extract the distinguishable and essential features in frequency rich signals. This is required in classification and identification problems such as speaker verification. Nonlinearity and structured knowledge representation with human perception of fuzzy inference system makes it to be a suitable model for speaker verification when combined with the wavelet network. In this approach, the wavelet theory is combined with the fuzzy based neural network theory which leads to construction of Fuzzy Wavelet Network (FWN). The advantage of fuzzy wavelet network is that the membership functions can be easily merged or divided using the multi resolution properties and the rules can be evaluated during learning. The performance of the proposed speaker verification system is evaluated with TIMIT database. A comparison is made between the proposed system and the system using state of the art model (GMM). Compared with GMM and WNN, FWN provides better verification performance.","PeriodicalId":408736,"journal":{"name":"2011 International Conference on Communications and Signal Processing","volume":"43 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":"125189890","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