IET Signal Process.最新文献_第5页

RIP based condition for support recovery with A* OMP in the presence of noise 基于RIP的条件下支持恢复与A* OMP在存在噪声

IET Signal Process. Pub Date : 2020-03-24 DOI: 10.1049/iet-spr.2019.0478

Haifeng Li, Wengu Chen

引用次数: 3

Minimum mean squares error beamforming with cyclic sub-vector optimisation 循环子向量优化的最小均方误差波束形成

IET Signal Process. Pub Date : 2020-03-24 DOI: 10.1049/IET-SPR.2019.0164

Tuanning Liu, Yuanping Zhou, Yaoting Ma, Rongzhen Miao

引用次数: 0

Adaptive multi-band filter structure-based far-end speech enhancement 基于自适应多频带滤波器结构的远端语音增强

IET Signal Process. Pub Date : 2020-03-19 DOI: 10.1049/iet-spr.2019.0226

P. ActlinJeevaM, Tushar Nagarajan, P. Vijayalakshmi

{"title":"Adaptive multi-band filter structure-based far-end speech enhancement","authors":"P. ActlinJeevaM, Tushar Nagarajan, P. Vijayalakshmi","doi":"10.1049/iet-spr.2019.0226","DOIUrl":"https://doi.org/10.1049/iet-spr.2019.0226","url":null,"abstract":"Speech signals degraded by noise tend to lose their quality and intelligibility. Therefore, the goal of speech enhancement algorithms is to restore these attributes of speech. The current work proposes a dynamic filter structure, dynamic over every utterance, that would vary simultaneously based on (i) the class of sound units in a given noisy/degraded signal, to improve intelligibility, and (ii) the noise components present, to improve quality. This filter structure is employed in the temporal-domain filtering-based multi-band speech enhancement algorithm, proposed by Jeeva et al.. The performance of the algorithm is evaluated subjectively and objectively, in terms of quality and intelligibility, and the algorithm is observed to successfully improve both attributes of degraded speech. Since the improvement in intelligibility depends on the effective restoration of sound units in the utterance, this process is language-specific. In this regard, an analysis is performed to study the influence of phone class distribution on the intelligibility improvement achieved for four Indian languages, namely Tamil, Hindi, Telugu, and Malayalam, and Indian English.","PeriodicalId":272888,"journal":{"name":"IET Signal Process.","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121720173","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

Joint beamforming and admission control for cache-enabled Cloud-RAN with limited fronthaul capacity 联合波束形成和接收控制的缓存启用云- ran与有限的前传容量

IET Signal Process. Pub Date : 2020-03-03 DOI: 10.1049/iet-spr.2019.0247

Ashraf Bsebsu, G. Zheng, S. Lambotharan, K. Cumanan, Basil AsSadhan

{"title":"Joint beamforming and admission control for cache-enabled Cloud-RAN with limited fronthaul capacity","authors":"Ashraf Bsebsu, G. Zheng, S. Lambotharan, K. Cumanan, Basil AsSadhan","doi":"10.1049/iet-spr.2019.0247","DOIUrl":"https://doi.org/10.1049/iet-spr.2019.0247","url":null,"abstract":"Caching is a promising solution for the cloud radio access network (Cloud-RAN) to mitigate the traffic load problem in the fronthaul links. Multiuser downlink beamforming plays an important role for efficient utilization of spectrum and transmission power while satisfying the user’s quality of service (QoS) requirements. When the number of users exceeds the serving capacity of the network, certain users will have to be dropped or re-scheduled. This is normally achieved by appropriate admission control mechanisms. Introducing local storage or cache at the remote radio heads (RRHs) where some popular contents are cached, we propose beamforming and admission control technique for cache-enabled Cloud-RAN in the downlink. This minimizes the total network cost including power and fronthaul cost while admitting as many users as possible. We formulate this multi-objective optimization problem as a single objective optimization problem. The original problem which is mixed-integer non-linear program (MINLP) is first co verted to the mixed-integer second order cone programming form (MISOCP). Branch and Bound (BnB) algorithm is then used to determine the optimal and suboptimal solutions. Simulation study has been conducted to assess the performance of both methods.","PeriodicalId":272888,"journal":{"name":"IET Signal Process.","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132044740","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

Improved RPCA method via non-convex regularisation for image denoising 基于非凸正则化的改进RPCA图像去噪方法

IET Signal Process. Pub Date : 2020-02-21 DOI: 10.1049/iet-spr.2019.0365

Sijie Wang, Ke-wen Xia, L. xilinx Wang, Jiangnan Zhang, Huaijin Yang

引用次数: 18

New two-stage approach to ECG denoising 新的两阶段心电去噪方法

IET Signal Process. Pub Date : 2019-08-01 DOI: 10.1049/IET-SPR.2018.5458

N. Mourad

引用次数: 4

Waveform covariance matrix design using Fourier series coefficients 用傅立叶级数系数设计波形协方差矩阵

IET Signal Process. Pub Date : 2019-04-16 DOI: 10.1049/IET-SPR.2019.0024

Mostafa Bolhasani, Esmaeil Kavousi Ghafi, S. Ghorashi, E. Mehrshahi

{"title":"Waveform covariance matrix design using Fourier series coefficients","authors":"Mostafa Bolhasani, Esmaeil Kavousi Ghafi, S. Ghorashi, E. Mehrshahi","doi":"10.1049/IET-SPR.2019.0024","DOIUrl":"https://doi.org/10.1049/IET-SPR.2019.0024","url":null,"abstract":"Multiple-input multiple-output (MIMO) radars may outperform other radar systems such as phased array radars, in terms of higher resolution, better detection probability in the presence of interferences, better parameter identifiability and more flexibility in beampattern design. Waveform covariance matrix design, because of its role in the beampattern synthesis process, is one of the most important problems in MIMO radar systems. In this study, the authors have proposed a closed-form solution based on Fourier series coefficients to design a covariance matrix. The resulting covariance matrix fulfils the practical constraints, i.e. positive semi-definiteness and the uniform elemental power constraint. It also provides performance similar to that of iterative methods, while requires lower computation time and provides better mean square error with respect to other existing closed-form methods. Eigenvalue decomposition is also utilised to convert the possible resulted pseudo-covariance matrices (pseudo-CM), which are not guaranteed to be positive semidefinite, into a covariance matrix. Simulation results show the performance of the proposed method.","PeriodicalId":272888,"journal":{"name":"IET Signal Process.","volume":"104 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"119964159","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

Equivalent Markov models for filtering and smoothing of mining vehicle positions 采矿车辆位置滤波平滑的等效马尔可夫模型

IET Signal Process. Pub Date : 2019-04-11 DOI: 10.1049/IET-SPR.2018.5255

G. Einicke

引用次数: 0

Detection of epileptic seizure employing a novel set of features extracted from multifractal spectrum of electroencephalogram signals 从脑电图信号的多重分形谱中提取一组新的特征来检测癫痫发作

IET Signal Process. Pub Date : 2019-04-01 DOI: 10.1049/IET-SPR.2018.5258

R. Bose, S. Pratiher, S. Chatterjee

{"title":"Detection of epileptic seizure employing a novel set of features extracted from multifractal spectrum of electroencephalogram signals","authors":"R. Bose, S. Pratiher, S. Chatterjee","doi":"10.1049/IET-SPR.2018.5258","DOIUrl":"https://doi.org/10.1049/IET-SPR.2018.5258","url":null,"abstract":"Here, a technique for automated detection of epilepsy is proposed, based on a novel set of features derived from the multifractal spectrum of electroencephalogram (EEG) signals. In fractal geometry, multifractal detrended fluctuation analysis (MDFA) is a technique to examine the self-similarity of a non-linear, chaotic and noisy time series. EEG signals which are representatives of complex human brain dynamics can be effectively characterised by MDFA. Here, EEG signals representing healthy, interictal and seizure activities are acquired from an available dataset. The acquired signals are at first analysed using MDFA. Based on the multifractal analysis, 14 novel features are proposed in this study, to distinguish between different types of EEG signals. The statistical significance of the selected features is evaluated using Kruskal–Wallis test and is finally served as input feature vector to a support vector machines classifier for the classification of EEG signals. Four classification problems are presented in this work and it is observed that 100% classification accuracy is obtained for three problems which validate the efficacy of the proposed model for computer-aided diagnosis of epilepsy.","PeriodicalId":272888,"journal":{"name":"IET Signal Process.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"119216287","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: 28

Extraction of acoustic features based on auditory spike code and its application to music genre classification 基于听觉脉冲码的声学特征提取及其在音乐类型分类中的应用

IET Signal Process. Pub Date : 2019-04-01 DOI: 10.1049/IET-SPR.2018.5158

Seong-Hyeon Shin, Ho-Won Yun, Woo-Jin Jang, Hochong Park

{"title":"Extraction of acoustic features based on auditory spike code and its application to music genre classification","authors":"Seong-Hyeon Shin, Ho-Won Yun, Woo-Jin Jang, Hochong Park","doi":"10.1049/IET-SPR.2018.5158","DOIUrl":"https://doi.org/10.1049/IET-SPR.2018.5158","url":null,"abstract":"A new method of extracting acoustic features based on auditory spike code is proposed. An auditory spike code represents the acoustic activities created by the signal, similar to sound encoding of the human auditory system. In the proposed method, an auditory spike code of the signal is computed using a 64-band Gammatone filterbank as the kernel functions. Then, for each spectral band, the sum and non-zero counts of the auditory spike code are determined, and the features corresponding to the population and occurrence rate of the acoustic activities for each band are computed. In addition, the distribution of the acoustic activities on a time axis is analysed based on the histogram of time intervals between the adjacent acoustic activities, and the features for expressing temporal properties of the signal are extracted. The reconstruction accuracy of the auditory spike code is also measured as the features. Different from most conventional features obtained by complex statistical modelling or learning, the features by the proposed method can directly show specific acoustic characteristics contained in the signal. These features are applied to a music genre classification, and it is confirmed that they provide a performance comparable to state-of-the-art features.","PeriodicalId":272888,"journal":{"name":"IET Signal Process.","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120324881","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: 15