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2016 24th European Signal Processing Conference (EUSIPCO)最新文献

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Memory and complexity reduction in parahermitian matrix manipulations of PEVD algorithms PEVD算法中parhermite矩阵操作的内存和复杂度降低
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760525
Fraser K. Coutts, J. Corr, K. Thompson, Stephan Weiss, I. Proudler, J. McWhirter
{"title":"Memory and complexity reduction in parahermitian matrix manipulations of PEVD algorithms","authors":"Fraser K. Coutts, J. Corr, K. Thompson, Stephan Weiss, I. Proudler, J. McWhirter","doi":"10.1109/EUSIPCO.2016.7760525","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760525","url":null,"abstract":"A number of algorithms for the iterative calculation of a polynomial matrix eigenvalue decomposition (PEVD) have been introduced. The PEVD is a generalisation of the ordinary EVD and will diagonalise a parahermitian matrix via paraunitary operations. This paper addresses savings - both computationally and in terms of memory use - that exploit the parahermitian structure of the matrix being decomposed, and also suggests an implicit trimming approach to efficiently curb the polynomial order growth usually observed during iterations of the PEVD algorithms. We demonstrate that with the proposed techniques, both storage and computations can be significantly reduced, impacting on a number of broadband multichannel problems.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123561017","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: 13
Multi-pitch estimation via fast group sparse learning 基于快速群稀疏学习的多基音估计
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760417
Ted Kronvall, Filip Elvander, Stefan Ingi Adalbjornsson, A. Jakobsson
{"title":"Multi-pitch estimation via fast group sparse learning","authors":"Ted Kronvall, Filip Elvander, Stefan Ingi Adalbjornsson, A. Jakobsson","doi":"10.1109/EUSIPCO.2016.7760417","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760417","url":null,"abstract":"In this work, we consider the problem of multi-pitch estimation using sparse heuristics and convex modeling. In general, this is a difficult non-linear optimization problem, as the frequencies belonging to one pitch often overlap the frequencies belonging to other pitches, thereby causing ambiguity between pitches with similar frequency content. The problem is further complicated by the fact that the number of pitches is typically not known. In this work, we propose a sparse modeling framework using a generalized chroma representation in order to remove redundancy and lower the dictionary's block-coherency. The found chroma estimates are then used to solve a small convex problem, whereby spectral smoothness is enforced, resulting in the corresponding pitch estimates. Compared with previously published sparse approaches, the resulting algorithm reduces the computational complexity of each iteration, as well as speeding up the overall convergence.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117025454","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
2D direction of arrival estimation of multiple moving sources using a spherical microphone array 基于球形传声器阵列的多运动源二维到达方向估计
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760442
Alastair H. Moore, C. Evers, P. Naylor
{"title":"2D direction of arrival estimation of multiple moving sources using a spherical microphone array","authors":"Alastair H. Moore, C. Evers, P. Naylor","doi":"10.1109/EUSIPCO.2016.7760442","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760442","url":null,"abstract":"Direction of arrival estimation using a spherical microphone array is an important and growing research area. One promising algorithm is the recently proposed Subspace Pseudo-Intensity Vector method. In this contribution the Subspace Pseudo-Intensity Vector method is combined with a state-of-the-art method for robustly estimating the centres of mass in a 2D histogram based on matching pursuits. The performance of the improved Subspace Pseudo-Intensity Vector method is evaluated in the context of localising multiple moving sources where it is shown to outperform competing methods in terms of clutter rate and the number of missed detections whilst remaining comparable in terms of localisation accuracy.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123134090","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
Spectrum sensing using energy detectors with performance computation capabilities 利用具有性能计算能力的能量探测器进行频谱传感
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760520
L. Rugini, P. Banelli, G. Leus
{"title":"Spectrum sensing using energy detectors with performance computation capabilities","authors":"L. Rugini, P. Banelli, G. Leus","doi":"10.1109/EUSIPCO.2016.7760520","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760520","url":null,"abstract":"We focus on the performance of the energy detector for cognitive radio applications. Our aim is to incorporate, into the energy detector, low-complexity algorithms that compute the performance of the detector itself. The main parameters of interest are the probability of detection and the required number of samples. Since the exact performance analysis involves complicated functions of two variables, such as the regularized lower incomplete Gamma function, we introduce new low-complexity approximations based on algebraic transformations of the one-dimensional Gaussian Q-function. The numerical comparison of the proposed approximations with the exact analysis highlights the good accuracy of the low-complexity computation approach.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116161835","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
Robust non-negative least squares using sparsity 利用稀疏性的鲁棒非负最小二乘
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760210
Filip Elvander, Stefan Ingi Adalbjornsson, A. Jakobsson
{"title":"Robust non-negative least squares using sparsity","authors":"Filip Elvander, Stefan Ingi Adalbjornsson, A. Jakobsson","doi":"10.1109/EUSIPCO.2016.7760210","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760210","url":null,"abstract":"Sparse, non-negative signals occur in many applications. To recover such signals, estimation posed as non-negative least squares problems have proven to be fruitful. Efficient algorithms with high accuracy have been proposed, but many of them assume either perfect knowledge of the dictionary generating the signal, or attempts to explain deviations from this dictionary by attributing them to components that for some reason is missing from the dictionary. In this work, we propose a robust non-negative least squares algorithm that allows the generating dictionary to differ from the assumed dictionary, introducing uncertainty in the setup. The proposed algorithm enables an improved modeling of the measurements, and may be efficiently implemented using a proposed ADMM implementation. Numerical examples illustrate the improved performance as compared to the standard non-negative LASSO estimator.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115779899","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
Localization of moving microphone arrays from moving sound sources for robot audition 机器人试听用移动声源定位移动麦克风阵列
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760400
C. Evers, Alastair H. Moore, P. Naylor
{"title":"Localization of moving microphone arrays from moving sound sources for robot audition","authors":"C. Evers, Alastair H. Moore, P. Naylor","doi":"10.1109/EUSIPCO.2016.7760400","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760400","url":null,"abstract":"Acoustic Simultaneous Localization and Mapping (a-SLAM) jointly localizes the trajectory of a microphone array installed on a moving platform, whilst estimating the acoustic map of surrounding sound sources, such as human speakers. Whilst traditional approaches for SLAM in the vision and optical research literature rely on the assumption that the surrounding map features are static, in the acoustic case the positions of talkers are usually time-varying due to head rotations and body movements. This paper demonstrates that tracking of moving sources can be incorporated in a-SLAM by modelling the acoustic map as a Random Finite Set (RFS) of multiple sources and explicitly imposing models of the source dynamics. The proposed approach is verified and its performance evaluated for realistic simulated data.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125400160","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: 9
Physical layer security: Friendly jamming in an untrusted relay scenario 物理层安全性:在不可信中继场景中友好干扰
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760390
B. Ali, Nida Zamir, M. F. U. Butt, S. Ng
{"title":"Physical layer security: Friendly jamming in an untrusted relay scenario","authors":"B. Ali, Nida Zamir, M. F. U. Butt, S. Ng","doi":"10.1109/EUSIPCO.2016.7760390","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760390","url":null,"abstract":"This paper investigates the achievable secrecy regions when employing a friendly jammer in a cooperative scenario employing an untrusted relay. The untrusted relay which helps to forward the source signal towards the destination, could also be regarded as a potential eavesdropper. Our system employs a friendly jammer which sends a known noise signal towards the relay. In this paper, we investigate the effect of jammer and relay locations on the achievable secrecy rate. We consider two scenarios where in the first case we consider no direct transmission between the source and destination, while in the second case we include a source to destination direct link in our communication system.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131740078","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
Wave digital filter modeling of circuits with operational amplifiers 运算放大器电路的波形数字滤波器建模
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760405
Kurt James Werner, W. Dunkel, Maximilian Rest, M. Olsen, Julius O. Smith
{"title":"Wave digital filter modeling of circuits with operational amplifiers","authors":"Kurt James Werner, W. Dunkel, Maximilian Rest, M. Olsen, Julius O. Smith","doi":"10.1109/EUSIPCO.2016.7760405","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760405","url":null,"abstract":"We extend the Wave Digital Filter (WDF) approach to simulate reference circuits that involve operational amplifiers (op-amps). We handle both nullor-based ideal op-amp models and controlled-source-based linear op-amp macromodels in circuits with arbitrary topologies using recent derivations for complicated scattering matrices. The presented methods greatly increase the class of appropriate circuits for virtual analog modeling, and readily extend to circuits with any number of op-amps. Although op-amps are essential to many circuits and deviations from ideal can be important, previous WDF research applies only to the limited case of circuits with ideal op-amps, in differential amplifier topology, with no global feedback.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129967165","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: 29
Secure wireless communications with relay selection and wireless powered transfer 安全无线通信与中继选择和无线供电传输
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760359
Nam-Phong Nguyen, Yu-zhen Huang, T. Duong, Z. Hadzi-Velkov, B. Canberk
{"title":"Secure wireless communications with relay selection and wireless powered transfer","authors":"Nam-Phong Nguyen, Yu-zhen Huang, T. Duong, Z. Hadzi-Velkov, B. Canberk","doi":"10.1109/EUSIPCO.2016.7760359","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760359","url":null,"abstract":"In this paper, we investigate the secrecy performance of an energy harvesting relay network, where a legitimate source communicates with a legitimate destination via the assistance of multiple trusted relays. In the considered system, the source and relays deploy the time-switching based radio frequency energy harvesting technique to harvest energy from a multi-antenna beacon. Different antenna selection and relay selection schemes are applied to enhance the security of the system. Specifically, two relay selection schemes based on the partial and full knowledge of channel state information are proposed. The exact closed-form expressions of the systems secrecy outage probability in these schemes are derived. A Monte-Carlo based simulation validates our analysis results.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"13 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132496704","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
Ultrasound image reconstruction from compressed measurements using approximate message passing 利用近似信息传递从压缩测量中重建超声图像
2016 24th European Signal Processing Conference (EUSIPCO) Pub Date : 2016-12-01 DOI: 10.1109/EUSIPCO.2016.7760310
J. Kim, A. Basarab, P. Hill, D. Bull, D. Kouamé, A. Achim
{"title":"Ultrasound image reconstruction from compressed measurements using approximate message passing","authors":"J. Kim, A. Basarab, P. Hill, D. Bull, D. Kouamé, A. Achim","doi":"10.1109/EUSIPCO.2016.7760310","DOIUrl":"https://doi.org/10.1109/EUSIPCO.2016.7760310","url":null,"abstract":"In this paper we propose a novel framework for compressive sampling reconstruction of biomedical ultrasonic images based on the Approximate Message Passing (AMP) algorithm. AMP is an iterative algorithm that performs image reconstruction through image denoising within a compressive sampling framework. In this work, our aim is to evaluate the merits of several combinations of a denoiser and a transform domain, which are the two main factors that determine the recovery performance. In particular, we investigate reconstruction performance in the spatial, DCT, and wavelet domains. We compare the results with existing reconstruction algorithms already used in ultrasound imaging and quantify the performance improvement.","PeriodicalId":127068,"journal":{"name":"2016 24th European Signal Processing Conference (EUSIPCO)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127117107","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
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