arXiv: Signal Processing最新文献

Three-Dimensional Localization of Active Aerial Targets Using a Single Terrestrial Receiver Site 利用单一地面接收机站点进行主动空中目标的三维定位

arXiv: Signal Processing Pub Date : 2021-07-21 DOI: 10.36227/TECHRXIV.14999943.V1

Saber Kaviani, F. Behnia

引用次数: 0

Feasibility Study on Intra-Grid Location Estimation Using Power ENF Signals 基于功率ENF信号的网格内位置估计可行性研究

arXiv: Signal Processing Pub Date : 2021-04-30 DOI: 10.36227/TECHRXIV.14516634.V1

Ravi Garg, Adi Hajj-Ahmad, Min Wu

{"title":"Feasibility Study on Intra-Grid Location Estimation Using Power ENF Signals","authors":"Ravi Garg, Adi Hajj-Ahmad, Min Wu","doi":"10.36227/TECHRXIV.14516634.V1","DOIUrl":"https://doi.org/10.36227/TECHRXIV.14516634.V1","url":null,"abstract":"The Electric Network Frequency (ENF) is a signature of power distribution networks that can be captured by multimedia recordings made in areas where there is electrical activity. This has led to an emergence of several forensic applications based on the use of the ENF signature. Examples of such applications include estimating or verifying the time-of-recording of a media signal and inferring the power grid associated with the location in which the media signal was recorded. In this paper, we carry out a feasibility study to examine the possibility of using embedded ENF traces to pinpoint the location-of-recording of a signal within a power grid. In this study, we demonstrate that it is possible to pinpoint the location-of-recording to a certain geographical resolution using power signal recordings containing strong ENF traces. To this purpose, a high-passed version of an ENF signal is extracted and it is demonstrated that the correlation between two such signals, extracted from recordings made in different geographical locations within the same grid, decreases as the distance between the recording locations increases. We harness this property of correlation in the ENF signals to propose trilateration based localization methods, which pinpoint the unknown location of a recording while using some known recording locations as anchor locations. We also discuss the challenges that need to be overcome in order to extend this work to using ENF traces in noisier audio/video recordings for such fine localization purposes.","PeriodicalId":8487,"journal":{"name":"arXiv: Signal Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88395089","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

Photonic perceptron at Giga-OP/s speeds with Kerr microcombs for scalable optical neural networks 用于可扩展光学神经网络的千兆op /s速度光子感知器与Kerr微梳

arXiv: Signal Processing Pub Date : 2021-04-23 DOI: 10.21203/RS.3.RS-453033/V1

M. Tan, Xingyuan Xu, D. Moss

引用次数: 0

Nonlinear methods to quantify Movement Variability in Human-Humanoid Interaction Activities 非线性方法量化人-人形交互活动中的运动变异性

arXiv: Signal Processing Pub Date : 2021-03-23 DOI: 10.21203/RS.3.RS-352130/V1

Miguel P. Xochicale, Chris Baber

{"title":"Nonlinear methods to quantify Movement Variability in Human-Humanoid Interaction Activities","authors":"Miguel P. Xochicale, Chris Baber","doi":"10.21203/RS.3.RS-352130/V1","DOIUrl":"https://doi.org/10.21203/RS.3.RS-352130/V1","url":null,"abstract":"\u0000 Human movement variability arises from the process of mastering redundant (bio)mechanical degrees of freedom to successfully accomplish any given motor task where flexibility and stability of many possible joint combinations helps to adapt to environment conditions. While the analysis of movement of variability is becoming increasingly popular as a diagnostic tool or skill performance evaluation, there are remain challenges on applying the most appropriate methods. We therefore investigate nonlinear methods such as reconstructed state space (RSSs), uniform time-delay embedding, recurrence plots (RPs) and recurrence quantification analysis (RQAs) with real-world time-series data of wearable inertial sensors. That said, twenty healthy participants imitated vertical and horizontal arm movements in normal and faster velocity from an humanoid robot. We applied nonlinear methods to the collected data to found visual differences in the patterns of RSSs and RPs and statistical differences with RQAs. We conclude that Shannon Entropy with RQA is a robust method that helps to quantify activities, types of sensors, windows lengths and level of smoothness. Hence this work might enhance the development of better diagnostic tools for applications in rehabilitation and sport science for skill performance or new forms of human-humanoid interaction for quantification of movement adaptations and motor pathologies.","PeriodicalId":8487,"journal":{"name":"arXiv: Signal Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82662203","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

Design, Implementation, Comparison, and Performance analysis between Analog Butterworth and Chebyshev-I Low Pass Filter Using Approximation, Python and Proteus 基于近似、Python和Proteus的模拟巴特沃斯和切比雪夫低通滤波器的设计、实现、比较和性能分析

arXiv: Signal Processing Pub Date : 2021-01-25 DOI: 10.21203/RS.3.RS-220218/V1

Navid Fazle Rabbi

引用次数: 0

Influence of the Gender on the Relationship Between Heart Rate and Blood Pressure 性别对心率与血压关系的影响

arXiv: Signal Processing Pub Date : 2020-11-23 DOI: 10.1007/978-3-030-64610-3_77

G. Silveri, L. Pascazio, M. Ajčević, A. Miladinović, A. Accardo

引用次数: 1

On Performance of Sparse Fast Fourier Transform Algorithms Using the Aliasing Filter. 基于混叠滤波器的稀疏快速傅里叶变换算法性能研究。

arXiv: Signal Processing Pub Date : 2020-11-11 DOI: 10.3390/ELECTRONICS10091117

Bin Li, Zhikang Jiang, Jie Chen

{"title":"On Performance of Sparse Fast Fourier Transform Algorithms Using the Aliasing Filter.","authors":"Bin Li, Zhikang Jiang, Jie Chen","doi":"10.3390/ELECTRONICS10091117","DOIUrl":"https://doi.org/10.3390/ELECTRONICS10091117","url":null,"abstract":"Computing the Sparse Fast Fourier Transform(sFFT) of a K-sparse signal of size N has emerged as a critical topic for a long time. There are mainly two stages in the sFFT: frequency bucketization and spectrum reconstruction. Frequency bucketization is equivalent to hashing the frequency coefficients into B buckets through one of these filters: Dirichlet kernel filter, flat filter, aliasing filter, etc. The spectrum reconstruction is equivalent to identifying frequencies that are isolated in their buckets. More than forty different sFFT algorithms compute Discrete Fourier Transform(DFT) by their unique methods so far. In order to use them properly, the urgent topic of great concern is how to analyze and evaluate the performance of these algorithms in theory and practice. The paper mainly discusses the sFFT Algorithms using the aliasing filter. In the first part, the paper introduces the technique of three frameworks: the one-shot framework based on the compressed sensing(CS) solver, the peeling framework based on the bipartite graph and the iterative framework based on the binary tree search. Then, we get the conclusion of the performance of six corresponding algorithms: sFFT-DT1.0, sFFT-DT2.0, sFFT-DT3.0, FFAST, R-FFAST and DSFFT algorithm in theory. In the second part, we make two categories of experiments for computing the signals of different SNR, different N, different K by a standard testing platform and record the run time, percentage of the signal sampled and L0, L1, L2 error both in the exactly sparse case and general sparse case. The result of experiments satisfies the inferences obtained in theory.","PeriodicalId":8487,"journal":{"name":"arXiv: Signal Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75764088","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

Metrics for aerial, urban lidar point clouds 空中、城市激光雷达点云的度量

arXiv: Signal Processing Pub Date : 2020-10-20 DOI: 10.1016/J.ISPRSJPRS.2021.01.010

M. Stanley, D. Laefer

引用次数: 8

In-band Perturbation based OSNR Estimation 基于带内扰动的OSNR估计

arXiv: Signal Processing Pub Date : 2020-10-17 DOI: 10.5281/ZENODO.4115443

F. J. Vaquero-Caballero, D. Charlton, M. E. Mousa-Pasandi, D. Ives, C. Laperle, M. Hubbard, M. Reimer, M. OSullivan, S. Savory

引用次数: 2

Deep analog-to-digital converter for wireless communication 用于无线通信的深度模数转换器

arXiv: Signal Processing Pub Date : 2020-09-11 DOI: 10.1117/12.2576967

Ashkan Samiee, Yiming Zhou, Tingyi Zhou, B. Jalali

{"title":"Deep analog-to-digital converter for wireless communication","authors":"Ashkan Samiee, Yiming Zhou, Tingyi Zhou, B. Jalali","doi":"10.1117/12.2576967","DOIUrl":"https://doi.org/10.1117/12.2576967","url":null,"abstract":"With the advent of the 5G wireless networks, achieving tens of gigabits per second throughputs and low, milliseconds, latency has become a reality. This level of performance will fuel numerous real-time applications, such as autonomy and augmented reality, where the computationally heavy tasks can be performed in the cloud. The increase in the bandwidth along with the use of dense constellations places a significant burden on the speed and accuracy of analog-to-digital converters (ADC). A popular approach to create wideband ADCs is utilizing multiple channels each operating at a lower speed in the time-interleaved fashion. However, an interleaved ADC comes with its own set of challenges. The parallel architecture is very sensitive to the inter-channel mismatch, timing jitter, clock skew between different ADC channels as well as the nonlinearity within individual channels. Consequently, complex post-calibration is required using digital signal processing (DSP) after the ADC. The traditional DSP calibration consumes a significant amount of power and its design requires knowledge of the source and type of errors which are becoming increasingly difficult to predict in nanometer CMOS processes. In this paper, instead of individually targeting each source of error, we utilize a deep learning algorithm to learn the complete and complex ADC behavior and to compensate for it in realtime. We demonstrate this \"Deep ADC\" technique on an 8G Sample/s 8-channel time-interleaved ADC with the QAM-OFDM modulated data. Simulation results for different QAM symbol constellations and OFDM subcarriers show dramatic improvements of approximately 5 bits in the dynamic range with a concomitant drastic reduction in symbol error rate. We further discuss the hardware implementation including latency, power consumption, memory requirements, and chip area.","PeriodicalId":8487,"journal":{"name":"arXiv: Signal Processing","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78535764","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