2020 22th International Conference on Digital Signal Processing and its Applications (DSPA)最新文献_第4页

Modeling of a High-Frequency Hydroacoustic Communication Channel in Shallow Water of the Black Sea 黑海浅水高频水声通信信道的模拟

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213278

S. Dushin

{"title":"Modeling of a High-Frequency Hydroacoustic Communication Channel in Shallow Water of the Black Sea","authors":"S. Dushin","doi":"10.1109/DSPA48919.2020.9213278","DOIUrl":"https://doi.org/10.1109/DSPA48919.2020.9213278","url":null,"abstract":"A paper presents results of investigation of a high-frequency wideband hydroacoustic channel for high-speed communication with small ROVs using its model. A simulation is performed for typical conditions of the Black Sea in a warm season. A channel model takes into account multipath propagation due to reflection from the water surface and the bottom, a typical radiation pattern of high-frequency transducers, the Doppler effect due to the motion of the water surface and the receiver/transmitter fluctuation, wideband nature of the channel under consideration and the unevenness of its transfer function, in-band noise in the channel, acoustic wave speed profile inherent to the Black Sea in the warm season, as well as its salinity, pH, shallow water temperature. The model is implemented on the base of an open source software Bellhop and Acoustic Channel Simulator. The simulation results show that, if the channel occupies band 125-175kHz and the transmitter power is 150 dB µPa, the signal can be transmitted over 400m with signal-to-noise ratio up to 40 dB at the receiver side. At the same time, multipath propagation and non-stationarity due to motion, which are inherent to the channel, should be reduced for high-speed communication purpose. Reduction of unwanted rays strength using transducer with narrow beam pattern is shown during simulation.","PeriodicalId":262164,"journal":{"name":"2020 22th International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132651893","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

Combining Hand Detection and Gesture Recognition Algorithms for Minimizing Computational Cost 结合手部检测和手势识别算法的最小计算成本

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213273

R. Golovanov, D. Vorotnev, D. Kalina

{"title":"Combining Hand Detection and Gesture Recognition Algorithms for Minimizing Computational Cost","authors":"R. Golovanov, D. Vorotnev, D. Kalina","doi":"10.1109/DSPA48919.2020.9213273","DOIUrl":"https://doi.org/10.1109/DSPA48919.2020.9213273","url":null,"abstract":"Hand gesture recognition is very important in human-computer interactions (HCI). The most common way to build a recognition system is to use a pre-trained convolution neural network. Relatively new architectures called convolution pose machine can represent a skeleton model of a hand or body from an image with sufficiently high accuracy. However, systems based on these architectures require valuable computational resources which might be inaccessible in practice. Convolutional layers of neural networks take a significant part of computer resources even if the target object (hand) is absent in the frame. This paper proposes a possible solution to this problem. It presents a combined hand gesture recognition system that uses a hand detector to detect hand in the frame and then switches to gesture classifier if a hand was detected. The paper illustrates the proposed combined algorithm. Descriptions of used hand detector and gesture recognition algorithms also are given. Equations for the evaluation of potential performance increase and experimental results are presented. The proposed system is tested on publicly accessible gesture bases and on video sequences prepared by the authors. The experimental results are consistent with theoretical estimates and demonstrate the benefits of the proposed gesture recognition system design.","PeriodicalId":262164,"journal":{"name":"2020 22th International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131871900","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: 5

Cycles in the Permutation Decoding System 排列解码系统中的循环

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213277

A. Gladkikh

引用次数: 0

Multi-Carrier Modulations Digital Modem with the Narrow-Band Optimal Signals and High Spectral-Energy Efficiency 具有窄带最优信号和高频谱能量效率的多载波调制数字调制解调器

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213281

V. Sannikov, V. P. Volchkov

引用次数: 3

Combined Convolutional and Perceptron Neural Networks for Handwritten Digits Recognition 手写体数字识别的组合卷积和感知器神经网络

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213301

Zufar Kayumov, D. Tumakov, S. Mosin

引用次数: 3

Theoretical Model of the Signal Reflected from Rotating Blades of Aerial Targets 空中目标旋转叶片反射信号的理论模型

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213304

Ekaterina Plotnitskaya, V. Veremyev, E. Vorobev

引用次数: 1

Shaded Roads Detection Based on Contour Segmentation 基于轮廓分割的阴影道路检测

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213290

E. Kurbatova, Y. Pavlovskaya

引用次数: 1

Closed-Form Training-Based Blind Estimation of Frequency Offset for QAM Signals with Unknown Power and Signal-to-Noise Ratio 功率未知、信噪比未知的QAM信号盲频偏估计

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213295

A. Sergienko, M. Baranov

引用次数: 1

Undersampling Reference Receiver For LNA Distortions Compensation Direct RF Digitization Receiver 欠采样参考接收机用于LNA失真补偿直接射频数字化接收机

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213283

Ngoc-Anh Vu, Thi-Hong-Tham Tran, Hai-Nam Le, Hai D. Nguyen, Quang-Kien Trinh

{"title":"Undersampling Reference Receiver For LNA Distortions Compensation Direct RF Digitization Receiver","authors":"Ngoc-Anh Vu, Thi-Hong-Tham Tran, Hai-Nam Le, Hai D. Nguyen, Quang-Kien Trinh","doi":"10.1109/DSPA48919.2020.9213283","DOIUrl":"https://doi.org/10.1109/DSPA48919.2020.9213283","url":null,"abstract":"The paper analyzes the effect of the nonlinear distortion of Low Noise Amplifier (LNA) in multichannel direct RF digitization receivers (DRF-RX). A novel distortion compensation approach has been proposed, where the compensation is performed entirely in the digital domain at baseband after the digital down-converter (DDC). Distortion information is extracted from the signals of the main receiver and a linear reference receiver. The reproduced information is used for distortion compensation using a nonlinear model and an adaptive Least Mean Square (LMS) algorithm. As the major advantage, processing at baseband with a low sampling rate significantly reduces the cost, the design complexity and the energy consumption of the receiver. The proposed undersampling reference receiver structure exhibits additional benefit in terms of hardware usage and energy consumption by using a low-cost and large dynamic range ADC. To verify the scheme's efficiency, an Ultra High Frequency (UHF) DRX with four QPSK channels is simulated by Matlab Simulink. The simulation results show that the method improves the Spurious-free dynamic range (SFDR) with an increase of about 20 dB, compared to the results of RX without distortion compensation.","PeriodicalId":262164,"journal":{"name":"2020 22th International Conference on Digital Signal Processing and its Applications (DSPA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127981065","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

Low-Latency CUDA LDPC Decoder for SDR Solutions 用于SDR解决方案的低延迟CUDA LDPC解码器

2020 22th International Conference on Digital Signal Processing and its Applications (DSPA) Pub Date : 2020-03-01 DOI: 10.1109/DSPA48919.2020.9213279

Igor Volkov, A. Kharin, E. Likhobabin, A. Ovinnikov, V. Vityazev

引用次数: 0