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2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)最新文献

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Adaptive Equalization Algorithms Efficiency Investigations in Hydroacoustic Communication Applications with FBMC Modulation 自适应均衡算法在FBMC调制水声通信中的效率研究
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535708
Ilya M. Malakhov, S. Dushin, Igor Y. Kurov, S. Shavrin
{"title":"Adaptive Equalization Algorithms Efficiency Investigations in Hydroacoustic Communication Applications with FBMC Modulation","authors":"Ilya M. Malakhov, S. Dushin, Igor Y. Kurov, S. Shavrin","doi":"10.1109/DSPA51283.2021.9535708","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535708","url":null,"abstract":"Adaptive equalization algorithms efficiency in hydroacoustic communication systems with FBMC modulation is being investigated. In particular, estimation algorithms based on blind equalization methods, conventional LMS and RLS algorithms using pilot signals, which is combined with linear and decision feedback equalization techniques, are being considered. In addition, the MMSE equalizer with channel estimation using pilots is analyzed for comparison. The equalizers are applied to the QAM-FBMC system with Hermite filter prototypes. The simulation is performed using open source software for Filter Bank Multicarrier Modulation. The channel was being simulated using Brest Commercial Harbor experimental data from Watermark benchmark.The investigation shows that the considered adaptive equalizers with several taps are applicable only for small number of subcarriers (10 subcarriers considered). For large number of subcarriers (250 subcarriers considered) the one-tap equalizers with per-frame estimation show better results, because of subchannel frequency response flatness and channel nonstationarity. Among the equalizers considered, the better results for 250 subcarriers are achieved for the MMSE with 12.5% of pilots in overall signal, suitable results were also obtained for linear RLS equalizer with one-tap estimator. For 10 subcarriers best result is achieved for LE-RLS algorithm with 2–4 taps.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"20 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116649747","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
Digital Signal Multi-Stage Discrete Fourier Transform and Its Practical Applications 数字信号多级离散傅里叶变换及其实际应用
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535810
A. Burova
{"title":"Digital Signal Multi-Stage Discrete Fourier Transform and Its Practical Applications","authors":"A. Burova","doi":"10.1109/DSPA51283.2021.9535810","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535810","url":null,"abstract":"The issues related to the study of the problem of minimizing hardware costs for software and hardware implementation of algorithms for frequency selection of digital signals on programmable logic devices are considered. The purpose of the study is to define the theoretical foundations of the concept and methodology of the multi-stage discrete Fourier transform without performing multiplication operations. The methods of software and hardware modeling of digital signal processing algorithms were used in the study. The principles of the multi-stage discrete Fourier transform of complex signals are specified only by the operations of adding their time samples. Its methods and digital algorithms are presented. Their basic formulas are given.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124772853","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: 7
Development of an Algorithm for Positioning an Object According to Data from an Active Sensor Network Bluetooth Low Energy Beacons 基于有源传感器网络蓝牙低能量信标数据的目标定位算法研究
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535736
A. Astafiev, A. Demidov, A. Zhiznyakov, I. Kondrushin, I. V. Voronin
{"title":"Development of an Algorithm for Positioning an Object According to Data from an Active Sensor Network Bluetooth Low Energy Beacons","authors":"A. Astafiev, A. Demidov, A. Zhiznyakov, I. Kondrushin, I. V. Voronin","doi":"10.1109/DSPA51283.2021.9535736","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535736","url":null,"abstract":"The paper considers the process of developing an algorithm for positioning an object according to data from an active sensor network Bluetooth Low Energy beacons. To develop the algorithm, a laboratory bench was developed that includes Bluetooth Low Energy beacons, a debug board, a smartphone and a personal computer. The stand uses software developed by the authors. At the first stage, we consider the construction of a triangulation for a controlled room by points, which are presented in the form of Bluetooth Low Energy beacons. In fact, this is an interpretation of the plan of the controlled area into a description of the propagation environment of radio beacon signals, taking into account physical obstacles. In addition to triangulation, a cache is created, which increases the speed of work with a digital map of the controlled room. The following describes the process of selecting beacons to apply multilateration. A modified multilateration algorithm has been developed taking into account the specifics of the choice of beacons. A mathematical description of the developed stages of the positioning algorithm is given. Experimental studies of the proposed algorithm have been carried out in a closed room measuring 5 by 10 meters. Based on the conducted experiment, it can be concluded that the developed algorithm allows positioning a moving mobile device in real time with an accuracy of 5–54 cm. Using additional tools to refine the positioning results can improve this result.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122643888","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
Heart Rate Variations Analysis: Traditions, Misconceptions, Perspectives 心率变化分析:传统，误解，观点
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535761
Viktor F. Fedorov, V. Stolyar
{"title":"Heart Rate Variations Analysis: Traditions, Misconceptions, Perspectives","authors":"Viktor F. Fedorov, V. Stolyar","doi":"10.1109/DSPA51283.2021.9535761","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535761","url":null,"abstract":"The article is devoted to the heart rate “variability” analysis from the history of the issue to the current Euro-American and Russian recommendations. The aim of this work was to analyze the correctness of these documents from the point of view of both physiology and algorithms for identifying and applying quantitative parameters of heart rate variations. The methodological and algorithmic imperfection of the applied approaches is shown. Ways to overcome the existing problems are proposed.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122778879","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
Digital Signal Processing of Capacitance Transients of Semiconductor Devices and Integrated Circuits 半导体器件和集成电路电容瞬态的数字信号处理
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535699
V. Krylov, A. Bogachev
{"title":"Digital Signal Processing of Capacitance Transients of Semiconductor Devices and Integrated Circuits","authors":"V. Krylov, A. Bogachev","doi":"10.1109/DSPA51283.2021.9535699","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535699","url":null,"abstract":"The introduction of capacitance deep-level transient spectroscopy methods into the practice of monitoring semiconductor devices and integrated circuits is associated with digital processing of capacitance transients that are weak in relation to noise. In this case, identification of devices’ potential defects is reduced to solving inverse ill-posed problems using a correlation procedure and statistical accumulation of experimental data. The accuracy of the solution significantly depends on the availability of a-priori information, which was obtained at the stage of preliminary experiments. The model of the dependence of the transformed capacitance transient on the repetition rate of deep level filling pulse has been proposed and experimental results have been presented. The processing of the results using this model makes it possible to expand the set of a-priori information for identifying potential defects.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123146106","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
Features of Frequency Synchronization Algorithms DVB-S2(X) for LEO Satellites 低轨道卫星DVB-S2(X)频率同步算法特点
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535822
L. Antiufrieva, K. Iansitov, A. Ivchenko, A. Dvorkovich
{"title":"Features of Frequency Synchronization Algorithms DVB-S2(X) for LEO Satellites","authors":"L. Antiufrieva, K. Iansitov, A. Ivchenko, A. Dvorkovich","doi":"10.1109/DSPA51283.2021.9535822","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535822","url":null,"abstract":"The article is devoted to studying the features of the application of the frequency synchronization algorithms in the second generation satellite broadcasting standard DVB-S2X for LEO satellites. In the course of the work, we calculated the Doppler shift values for a low-orbit satellite in the Ka-band, estimated minimum symbol rate, showed that the conventional set of algorithms could work with small changes, simulated frequency synchronization, and found the optimal parameters of the algorithms for normal and VLSNR frames.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115321679","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
Improvement of the Bit Duplication Method for Rate-Compatible Low-Density Parity-Check Codes 速率兼容低密度奇偶校验码的位重复方法改进
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535844
Son Le, E. Likhobabin
{"title":"Improvement of the Bit Duplication Method for Rate-Compatible Low-Density Parity-Check Codes","authors":"Son Le, E. Likhobabin","doi":"10.1109/DSPA51283.2021.9535844","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535844","url":null,"abstract":"In this paper, we propose a principle for improving the “bit duplication” method for designing rate-compatible low-density parity-check (LDPC) codes. An experiment was carried out in the Matlab to obtain codes of rate-1/4 with different variants for duplicating bits from the original irregular DVB-S2 code of rate-1/2. Experimental results show that different bit duplication variants give different performance, moreover, codes using duplication of that part of the code word, where, respectively, the columns of the check matrix have the majority of the nonzero elements, turn out to be the best.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123875205","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
Properties of Two-Dimensional Discrete Exponential Functions with Variable Parameter in Spatial-Frequency Domain 二维离散变参数指数函数在空频域的性质
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535969
O. Ponomareva, A. Ponomarev, N. Smirnova
{"title":"Properties of Two-Dimensional Discrete Exponential Functions with Variable Parameter in Spatial-Frequency Domain","authors":"O. Ponomareva, A. Ponomarev, N. Smirnova","doi":"10.1109/DSPA51283.2021.9535969","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535969","url":null,"abstract":"Fourier-processing of finite discrete two-dimensional signals (FDTD signals) (including images) in informational control systems (IC systems) is the most important method for studying processes and analyzing information. The theoretical basis of Fourier-processing of FDTD signals is two-dimensional discrete Fourier transforms. The practice of using Fourier - processing of finite two-dimensional signals (including images), having confirmed its effectiveness, revealed a number of negative effects inherent in it. In order to solve this problem, the authors have developed new discrete Fourier transforms with variable parameters were developed (2D DFT-VP). The purpose of this work is to study the properties of two-dimensional discrete exponential functions with a variable parameter in the spatial-frequency domain. The introduction of discrete exponential functions with a variable parameter makes it possible to generalize the concept of periodicity of the DEF-VP system. Recall that the periodicity of the DEF system in the classical DFT is understood as a periodic continuation of the DEF system outside the interval of N samples. Moreover, the system of discrete basis functions in the classical DFT does not contain discontinuities. In the case of DFT-VP, for the DEF-VP system to be inseparable, the periodicity should be understood as parametric periodicity. The parametric periodicity of discrete exponential functions with a variable parameter is understood as their periodic continuation with rotation in complex space by a certain angle. Note that the introduced concept of parametric periodicity is valid for 1D and 2D real and complex functions. The theorems of linearity, shift, and correlation are proved for Fourier transforms with variable parameters.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121647823","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
Speckle Image Modeling and Selection of Objects 斑点图像建模和对象选择
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535953
V. Volkov
{"title":"Speckle Image Modeling and Selection of Objects","authors":"V. Volkov","doi":"10.1109/DSPA51283.2021.9535953","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535953","url":null,"abstract":"The problem of speckle images modeling containing compact objects of interest is considered. One of phenomenological models is analyzed, and the relationship between the model parameters and the descriptors of the correlation properties of speckles is studied. An algorithm for modeling objects of interest on speckle patterns is proposed. This algorithm is used for object extraction in speckle images. The selection of objects of interest using multi-threshold processing in model and real speckle images are considered. The paper contains new results for object detection and selection in speckle images by means of multi-threshold processing which are illustrated in model and real speckle images.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121534458","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
On Channel Estimation and Equalization for the Spread Spectrum OFDM-based Modulation 基于扩频ofdm调制的信道估计与均衡
2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2021-03-24 DOI: 10.1109/DSPA51283.2021.9535856
Semyon Dorokhin
{"title":"On Channel Estimation and Equalization for the Spread Spectrum OFDM-based Modulation","authors":"Semyon Dorokhin","doi":"10.1109/DSPA51283.2021.9535856","DOIUrl":"https://doi.org/10.1109/DSPA51283.2021.9535856","url":null,"abstract":"This paper focuses on channel estimation and equalization for systems with Interleaved Spread Spectrum OFDM (ISS-OFDM) modulation. ISS-OFDM is a relatively new spread spectrum technique which inherits many properties of conventional OFDM. The task of channel estimation and equalization is addressed in context of ISS-OFDM for the first time. The introduction of an efficient ISS-OFDM channel estimator will make ISS-OFDM a spread spectrum technique which is robust to fading. The influence of multipath propagation is studied analytically in this paper and a novel ISS-OFDM channel estimation and equalization method is described. The proposed method outperforms the classical approach based on training symbols and greatly mitigates the system’s Bit Error Rate degradation caused by fading.","PeriodicalId":393602,"journal":{"name":"2021 23rd International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130005382","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
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