EURASIP Journal on Advances in Signal Processing最新文献

Double-layer data-hiding mechanism for ECG signals 心电信号的双层数据隐藏机制

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-09-16 DOI: 10.1186/s13634-024-01180-w

Iynkaran Natgunanathan, Chandan Karmakar, Sutharshan Rajasegarar, Tianrui Zong

{"title":"Double-layer data-hiding mechanism for ECG signals","authors":"Iynkaran Natgunanathan, Chandan Karmakar, Sutharshan Rajasegarar, Tianrui Zong","doi":"10.1186/s13634-024-01180-w","DOIUrl":"https://doi.org/10.1186/s13634-024-01180-w","url":null,"abstract":"Due to the advancement in biomedical technologies, to diagnose problems in people, a number of psychological signals are extracted from patients. We should be able to ensure that psychological signals are not altered by adversaries and it should be possible to relate a patient to his/her corresponding psychological signal. As far as our awareness extends, none of the existing methods possess the capability to both identify and verify the authenticity of the ECG signals. Consequently, this paper introduces an innovative dual-layer data-embedding approach for electrocardiogram (ECG) signals, aiming to achieve both signal identification and authenticity verification. Since file name-based signal identification is vulnerable to modifications, we propose a robust watermarking method which will embed patient-related details such as patient identification number, into the medically less-significant portion of the ECG signals. The proposed robust watermarking algorithm adds data into ECG signals such that the patient information hidden in an ECG signal can resist the filtering attack (such as high-pass filtering) and noise addition. This is achieved via the use of error buffers in the embedding algorithm. Further, modification-sensitive fragile watermarks are added to ECG signals. By extracting and checking the fragile watermark bits, we can determine whether an ECG signal is modified or not. To ensure the security of the proposed mechanism, two secret keys are used. Our evaluation demonstrates the usefulness of the proposed system.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"89 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maximum radial pattern matching for minimum star map identification 用于最小星图识别的最大径向模式匹配

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-08-27 DOI: 10.1186/s13634-024-01174-8

Jingneng Fu, Qiang Li, Ling Lin, Honggang Wei

{"title":"Maximum radial pattern matching for minimum star map identification","authors":"Jingneng Fu, Qiang Li, Ling Lin, Honggang Wei","doi":"10.1186/s13634-024-01174-8","DOIUrl":"https://doi.org/10.1186/s13634-024-01174-8","url":null,"abstract":"This paper proposes an all-sky star map identification algorithm that can simultaneously achieve high identification probability, low algorithm complexity, and small databases for well photometric and intrinsic parameters-calibrated star sensors. The proposed algorithm includes three main steps. First, a binary radial pattern table is constructed offline. Then, the maximum value matching of the radial pattern is performed between the star spots and the guide stars, and the star pairs (i.e., the minimum star map) after radial pattern matching undergo a coarse matching through angular distance cross-validation. Finally, a reference star map is designed based on the identified star pairs, and the matching of all the star spots in the field of view is realized. Simulation and analysis results show that the database required by the proposed algorithm for 5,000 guide stars is not larger than 200 KB. Also, when false and missing star spots account for 50% of all guide stars and the star spot extraction error is 0.5 pixel (the corresponding pointing error is 26″), the average star map identification time of the proposed algorithm is less than 2 ms, and its identification probability is higher than 98%. The results demonstrate that the proposed algorithm performs better than similar algorithms.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"56 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimized power and speed of Split-Radix, Radix-4 and Radix-2 FFT structures 优化 Split-Radix、Radix-4 和 Radix-2 FFT 结构的功率和速度

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-08-24 DOI: 10.1186/s13634-024-01178-4

Mahsa Shirzadian Gilan, Behrouz Maham

{"title":"Optimized power and speed of Split-Radix, Radix-4 and Radix-2 FFT structures","authors":"Mahsa Shirzadian Gilan, Behrouz Maham","doi":"10.1186/s13634-024-01178-4","DOIUrl":"https://doi.org/10.1186/s13634-024-01178-4","url":null,"abstract":"Fast Fourier transform (FFT) is a fundamental building block for digital signal processing applications where high processing speed is crucial. Resource utilization in implementing FFT structures can be minimized by optimizing the performance of multipliers and adders used within the design. FFTs are also widely used in various machine learning algorithms. To achieve increased processor efficiency and reduced resource utilization, we propose a hardware design for Radix-2, Radix-4, and Split-Radix FFT architectures that utilizes a novel parallel prefix adder. This design offers lower power consumption, smaller chip area, and faster operation compared to existing architectures. Our performance analysis focuses on metrics such as power consumption, clock speed, and hardware complexity for Radix-2, Radix-4, and Split-Radix FFT algorithms implemented with the proposed adder. We compare these metrics using our proposed arithmetic structure against existing adder designs. The results indicate that the Split-Radix FFT architecture achieves lower power consumption and smaller chip area compared to Radix-4 and Radix-2 methods. Additionally, the Split-Radix FFT exhibits a higher clock speed. Therefore, based on these findings, the Split-Radix algorithm appears to be a compelling choice for implementation on field-programmable gate arrays due to its high speed and lower power consumption.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"392 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of unconstrained partitioned-block frequency-domain adaptive filters in under-modeling scenarios 欠建模情况下无约束分区块频域自适应滤波器的性能分析

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-08-24 DOI: 10.1186/s13634-024-01179-3

Zhengqiang Luo, Ziying Yu, Fang Kang, Feiran Yang, Jun Yang

{"title":"Performance analysis of unconstrained partitioned-block frequency-domain adaptive filters in under-modeling scenarios","authors":"Zhengqiang Luo, Ziying Yu, Fang Kang, Feiran Yang, Jun Yang","doi":"10.1186/s13634-024-01179-3","DOIUrl":"https://doi.org/10.1186/s13634-024-01179-3","url":null,"abstract":"The unconstrained partitioned-block frequency-domain adaptive filter (PBFDAF) offers superior computational efficiency over its constrained counterpart. However, the correlation matrix governing the natural modes of the unconstrained PBFDAF is not full rank. Consequently, the mean coefficient behavior of the algorithm depends on the initialization of adaptive coefficients and the Wiener solution is non-unique. To address the above problems, a new theoretical model for the deficient-length unconstrained PBFDAF is proposed by constructing a modified filter weight vector within a system identification framework. Specifically, we analyze the transient and steady-state convergence behavior. Our analysis reveals that modified weight vector is independent of its initialization in the steady state. The deficient-length unconstrained PBFDAF converges to a unique Wiener solution, which does not match the true impulse response of the unknown plant. However, the unconstrained PBFDAF can recover more coefficients of the parameter vector of the unknown system than the constrained PBFDAF in certain cases. Also, the modified filter coefficient yields better mean square deviation (MSD) performance than previously assumed. The presented alternative performance analysis provides new insight into convergence properties of the deficient-length unconstrained PBFDAF. Simulations validate the analysis based on the proposed theoretical model.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"24 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Maximum length binary sequences and spectral power distribution of periodic signals 最大长度二进制序列和周期信号的频谱功率分布

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-07-31 DOI: 10.1186/s13634-024-01177-5

Sebastian Orth, Harald Klingbeil

引用次数: 0

ECG signal decomposition using Fourier analysis 利用傅立叶分析法分解心电信号

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-07-19 DOI: 10.1186/s13634-024-01171-x

Arman Kheirati Roonizi, Roberto Sassi

引用次数: 0

Seven decades of image super-resolution: achievements, challenges, and opportunities 图像超分辨率七十年：成就、挑战与机遇

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-07-18 DOI: 10.1186/s13634-024-01170-y

Baraka Maiseli, Abdi T. Abdalla

引用次数: 0

Robust error-state Kalman-type filters for attitude estimation 用于姿态估计的鲁棒误差状态卡尔曼滤波器

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-07-12 DOI: 10.1186/s13634-024-01172-w

Andrea Bellés, Daniel Medina, Paul Chauchat, Samy Labsir, Jordi Vilà-Valls

引用次数: 0

Maximum likelihood inference for a class of discrete-time Markov switching time series models with multiple delays 一类具有多重延迟的离散时间马尔可夫切换时间序列模型的最大似然推理

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-07-01 DOI: 10.1186/s13634-024-01166-8

José. A. Martínez-Ordoñez, Javier López-Santiago, Joaquín Miguez

{"title":"Maximum likelihood inference for a class of discrete-time Markov switching time series models with multiple delays","authors":"José. A. Martínez-Ordoñez, Javier López-Santiago, Joaquín Miguez","doi":"10.1186/s13634-024-01166-8","DOIUrl":"https://doi.org/10.1186/s13634-024-01166-8","url":null,"abstract":"Autoregressive Markov switching (ARMS) time series models are used to represent real-world signals whose dynamics may change over time. They have found application in many areas of the natural and social sciences, as well as in engineering. In general, inference in this kind of systems involves two problems: (a) detecting the number of distinct dynamical models that the signal may adopt and (b) estimating any unknown parameters in these models. In this paper, we introduce a new class of nonlinear ARMS time series models with delays that includes, among others, many systems resulting from the discretisation of stochastic delay differential equations (DDEs). Remarkably, this class includes cases in which the discretisation time grid is not necessarily aligned with the delays of the DDE, resulting in discrete-time ARMS models with real (non-integer) delays. The incorporation of real, possibly long, delays is a key departure compared to typical ARMS models in the literature. We describe methods for the maximum likelihood detection of the number of dynamical modes and the estimation of unknown parameters (including the possibly non-integer delays) and illustrate their application with a nonlinear ARMS model of El Niño–southern oscillation (ENSO) phenomenon.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"172 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A RSBU-LSTM network for radio frequency fingerprint identification relying on multiple features 基于多种特征的射频指纹识别 RSBU-LSTM 网络

IF 1.9 4区工程技术

EURASIP Journal on Advances in Signal Processing Pub Date : 2024-06-28 DOI: 10.1186/s13634-024-01169-5

Haoran Ling, Fengchao Zhu, Minli Yao

{"title":"A RSBU-LSTM network for radio frequency fingerprint identification relying on multiple features","authors":"Haoran Ling, Fengchao Zhu, Minli Yao","doi":"10.1186/s13634-024-01169-5","DOIUrl":"https://doi.org/10.1186/s13634-024-01169-5","url":null,"abstract":"Radio frequency fingerprint identification (RFFI) can distinguish highly similar wireless communication devices to protect physical layer security and improve the security of wireless networks effectively, which has been widely used for spectrum management and physical layer secure communication. However, most RFFI methods show a degradation of performance under low signal-to-noise ratio (SNR) environments. In this paper, we propose a RSBU-LSTM network relying on multiple features to improve the identification accuracy with low SNR. Firstly, we use multiple features of in-phase (I), quadrature (Q), and phase as inputs. Then, we use multiple Residual Shrinkage Building Units (RSBUs) to extract the correlation features within the cycle of signals and preserve as many features as possible in low SNR environments. Finally, we use the long short-term memory (LSTM) to extract the relevant features of the signals of non-adjacent cycles. The experimental results show that the proposed network can effectively complete RFFI in low SNR environments and show better performance than other models used for comparison.","PeriodicalId":11816,"journal":{"name":"EURASIP Journal on Advances in Signal Processing","volume":"16 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0