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检索条件"任意字段=7th International Conference on Computer, Communication and Signal Processing, ICCCSP 2023"

共 290 条记录，以下是81-90 订阅

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Nonlinear characteristic analysis of ballistocardiogram signals based on chaotic time series 7

Nonlinear characteristic analysis of ballistocardiogram sign...

引用

7th international conference on Information, communication and Networks, ICICN 2019

作者： Wang, Zimin Xi, Lele Liu, Zhenbing Lin, Xiangmeng Wu, Xiru Luo, Xiaonan School of Computer Science and Information Security Guilin University of Electronic Technology Guilin China School of Electronic Engineering and Automation Guilin University of Electronic Technology Guilin China

ISBN: (纸本)9781728104263

the nonlinear characteristics of Ballistocardiogram (BCG) are analyzed based on chaotic time series in this paper. First of all, a set of seated BCG acquisition device is designed using piezoelectric thin film sensors, and ECG signals are collected synchronously. then, the digital signal processing is performed on the collected signals and the feature points are marked. the synchronization between the collected BCG signals and the ECG signals is verified through the comparison and analysis of the characteristic point spacing. Finally, the interval scatter plots (Lorenz plots) and phase space reconstruction map of the two kinds of signals are plotted. the Lorenz plots are compared and the reconstructed phase spatial statistics of the two signals are extracted. the results show that the BCG signal nonlinear characteristics of different individuals have certain commonalities and differences, which can be used as the basis for diagnosing cardiac status. © 2019 IEEE.

关键词： Digital signal processing

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Channel estimation for the uplink of MIMO MC-CDMA systems

Channel estimation for the uplink of MIMO MC-CDMA systems

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7th international conference on Advanced communication Technology, ICACT 2005

作者： Lee, Wilaiporn Sieskul, Bamrung Täu Kunaruttanapruk, Suwich Jitapunkul, Somchai Digital Signal Processing Research Laboratory Department of Electrical Engineering Chulalongkorn University Bangkok 10330 Thailand

ISBN: (纸本)8955191235

In this paper, a novel scheme of transmit training sequence is proposed for estimating the channel of the MI MO MCCD M A system. this scheme is to stretch out the existing pilotsymbol-aided approach with single multicarrier pilot symbol to the extended scheme proposed by mean of multiple multicarrier pilot symbols. Rather than being limited by M &le [K/L] in the conventional method, the proposed scheme can support larger number of concurrent users under the relation M &le [T × K/L] we derived, where T, K, M, and L are represented respectively as contiguous training sequence period with all T pilots, number of subcarriers, number of users or number of transmit antennas, and number of path or nonzero taps. the proposed estimator was evaluated by computer simulations and this results demonstrates merits of our proposed technique.

关键词： Multicarrier modulation

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A Robotic Ultrasound System Controlled by Human sEMG signals 7

A Robotic Ultrasound System Controlled by Human sEMG Signals

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7th IEEE international conference on Advanced Robotics and Mechatronics

作者： Xue, Boyang Xue, Wei Huang, Qinghua Northwestern Polytech Univ Sch Mech Engn Xian 710072 Shaanxi Peoples R China Northwestern Polytech Univ Ctr Opt Imagery Anal & Learning OPTMAL Xian 710072 Shaanxi Peoples R China

ISBN: (数字)9781665483063

ISBN: (纸本)9781665483063

With the rapid development of bioelectric signal processing and corresponding equipment, the processing and recognition of electromyography (EMG) signals are more and more widely used in the field of robotics, helping to achieve seamless communication and interaction between humans and machines. Taking the normative movement of human arms as the research object, this paper studies the classification and recognition method of multichannel surface EMG signals and the control problems of robots during exercise. Based on this, a human-computer interaction control system between the human EMG signal and the robot is designed and realized.

关键词： Ultrasonic imaging Trajectory planning Robot control signal processing algorithms Process control signal processing Electromyography

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7th international Workshop on Multiple Access communications, MACOM 2014

7th International Workshop on Multiple Access Communications...

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7th international Workshop on Multiple Access communications, MACOM 2014

ISBN: (纸本)9783319102610

the proceedings contain 14 papers. the special focus in this conference is on Physical Layer, Reliability, Networking and signal processing. the topics include: Digital phase updating loop and delay-doppler space division multiplexing for higher order MPSK;filter design for identification in multiple access channel;reduced-complexity robust detector in a DHA FH OFDMA system under mixed interference;measurements on V2V communication quality in a vehicle platooning application;reliability of ad hoc networks with imperfect nodes;a fast method for network topology generating;adaptive window size selection for efficient probability estimation in binary range coder of the 3-D DWT video codec and secret communication when the eavesdropper might be an active adversary.

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Research on the transmission performance of visible light signal in 6GHz band 7

Research on the transmission performance of visible light si...

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7th international conference on Electronic Information Technology and computer Engineering (EITCE)

作者： Yi, Linfang Shao, Yufeng Wang, Anrong Yang, Qiming Tian, Qing Yu, Ni Chongqing Three Gorges Univ Coll Elect & Informat Engn Chongqing 404100 Peoples R China Jiaxing Univ Coll Informat Sci & Engn Jiaxing 314001 Peoples R China

ISBN: (纸本)9798400708305

In this paper, the performance of a 6GHz band visible light communication (VLC) system using dual binary (DB) downlink signals is studied. through the 7m long free space optical link, 1Gbit/s visible light signal transmission is realized in the 6GHz band. Using the multiplier, the DB signal is mixed and modulated to the 6GHz frequency band to achieve the subcarrier modulation. At the same time, by changing the parameters of the low-pass filter at the receiver, the performance of the transmitted signal is compared and analyzed. the simulation results show that the visible light signals achieve 2.5Gbit/s transmission rate at a transmission distance of 1m. No matter which rate is used for signal transmission, when the cut-off frequency is 0.75 times the transmission speed, the bit error rate (BER) performance is the best. And the BER performance of visible light signals at different transmission rates is not always developing towards a trend. this scheme can appropriately alleviate the difficulty of bandwidth spectrum resource depletion and promote the development of the current 5G network.

关键词： VLC 6GHz low-pass filter BER

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An Algorithm for Synthesis of Generalized Gordon-Mils-Welch signals 18

An Algorithm for Synthesis of Generalized Gordon-Mils-Welch ...

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7th international conference on Telecommunications and Remote Sensing (ICTRS)

作者： Iliev, Milhail Bedzhev, Borislav Tsvetkova, Ivanka Yanakiev, Plamen Univ Ruse Angel Kanchev Dept Telecommun Ruse Bulgaria Univ Shumen Bishop Konstantin Preslavsky Dept Management Secur Syst Shumen Bulgaria

ISBN: (纸本)9781450365802

the radio signals possessing both good correlation properties and high structural complexity provide steady operation of wireless communication systems in hostile radio - electronic environment. With regard to this fact, in the paper we propose a new algorithm for synthesis of complex phase manipulated signals, possessing both good correlation properties and high structural complexity. Its advantages are: effectiveness from computational point of view and diminishing the losses in the signal-to-noise ratio, caused by the processing with side-lobe suppression filters.

关键词： computer algorithm Digital signal processing Generalized Gordon-Mils-Welch signals

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Performance Analysis of Heterogeneous Optical Beams based MIMO Visible Light communication System 7

Performance Analysis of Heterogeneous Optical Beams based MI...

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7th international conference on computer and communications, ICCC 2021

作者： Ding, Jupeng Chih-Lin, I. Wang, Lili Zhao, Kai Zheng, Jiong Xinjiang University Key Laboratory of Signal Detection and Processing In Xinjiang Uygur Autonomous Region School of Information Science and Engineering Uygur China China Mobile Research Institute Beijing China Ludong University School of Information and Electrical Engineering Yantai China

ISBN: (纸本)9781665409506

To a large extent, the multiple input multiple output (MIMO) visible light communication (VLC) is still restricted in homogeneous Lambertian research paradigm. In this work, the heterogeneous optical beams configuration is proposed for the MIMO VLC system. Specifically, two typical non-Lambertian optical beams i.e. LUXEON Rebel UB and LB patterns are introduced to heterogeneous MIMO beams configurations. In typical indoor scenario, the channel capacity of the proposed heterogeneous MIMO VLC system is evaluated and compared with the counterpart of the homogeneous Lambertian MIMO VLC system. Numerical results illustrate that the LUXEON Rebel UB based heterogeneous configuration could provide more than 9.7% average MIMO VLC capacity gain. Respectively, the capacity dynamic range is elevated to about 74.0-156.2 Mbps from the original about 75.9-116.2 Mbps of homogeneous configuration. © 2021 IEEE.

关键词： Visible light communication

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A RIS-Assisted Multiuser MIMO communication Method Based on Deep Reinforcement Learning 7

A RIS-Assisted Multiuser MIMO Communication Method Based on ...

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7th international conference on communication and Information Systems, ICCIS 2023

作者： Tian, Changlin Zhi, Hui Tie, Kui Anhui University School of Electronic and Information Engineering Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Hefei China CO. Ltd Bengbu China

ISBN: (纸本)9798350330540

In this paper, a RIS-assisted multiuser MIMO communication method based on deep reinforcement learning (RMMC-DRL) is proposed for multiuser scenarios. Our objective is to find the optimal transmit beamforming matrix of BS and optimal phase shift matrix of reflective intelligent surface (RIS) to maximize the sum rate of multiuser, this problem is reduced into a constrained optimization problem. It is a non-convex optimization problem, so we solve it through deep reinforcement learning (DRL) and then use the results for communication. In the DRL, a deep deterministic policy gradient (DDPG) framework that can handle continuous states and actions is designed, reward is set as optimization goal, and the transmit beamforming matrix and the phase shift matrix of RIS are obtained through the interaction with environment. Unlike the alternating optimization (AO) method, which solve the transmit beamforming matrix and the RIS phase shift matrix alternatively, the RMMC-DRL can obtain both transmit beamforming matrix and RIS phase shift matrix simultaneously as the output of DRL. Simulation results show that RMMC-DRL can learn and improve its behavior by interacting with the environment. Compared with AO method, RMMC-DRL can obtain higher sum rate and lower computational complexity. © 2023 IEEE.

关键词： beamforming matrix deep reinforcement learning phase shift matrix reconfigurable intelligent surface

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A Multi-sensor System for Monitoring the Performance of Elite Swimmers

A Multi-sensor System for Monitoring the Performance of Elit...

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7th international Joint conference on e-Business and Telecommunications (ICETE)

作者： Le Sage, Tanya Bindel, Axel Conway, Paul Justham, Laura Slawson, Sian Webster, James West, Andrew Univ Loughborough Wolfson Sch Mech & Mfg Engn Loughborough LE11 3TU Leics England

ISBN: (纸本)9783642252051

A comprehensive system is required to monitor numerous variables of a swimmer's performance. Current methods of analysis do not offer solutions which record and analyse multiple performance parameters simultaneously. the research presented in this paper provides an overview of an integrated system which has been developed to monitor several components of a swimmer's start, free swimming and turn concurrently. the integrated system is comprised of a wearable wireless sensor, vision components, force platform, pressure pad. LED markers and audio communication.

关键词： Swimming Components Integrated system signal processing

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2011 8th international conference on Fuzzy Systems and Knowledge Discovery, FSKD 2011, Jointly with the 2011 7th international conference on Natural Computation, ICNC'11

作者： Zheng, Gang Qi, Jia Shi, Guo-Jie Dai, Min School of Computer and Communication Tianjin University of Technology Tianjin China Laboratory of Biologic Signal and Intelligent Processing Tianjin University of Technology Tianjin China

ISBN: (纸本)9781612841816

Since Bio-signal contain rich diagnosis information for medical treatment, the modeling, featuring, classification and diagnostic analysis of the similarity measurement on such waveforms bear great significance in medical research. Getting inspiration from anti-aliasing analysis in signal processing field, a tunnel morph outcome model is presented for different types of disease related to bio-signal waveform. One similarity measurement strategy based on tunnel morph model is proposed in the paper. Instead of linear value measuring on waveforms, the curve characteristics of waveforms are also taken in consideration. Along with the tunnel morph model, a set of integrity definitions are given in the paper, including segmentation, measurement function selection, tunnel morph width, and best partition point assigning. the similarity measurement strategy is validated through a case study on AECG (Ambulatory Electrocardiogram). the data are from MIT/BIH, each of them contains 30 minutes ECG waveform. In the experiment, the sensitivity and positive predictivity are of the evaluation standard on different strategies. From the result, the effectiveness of tunnel morph strategy is higher than city block distance, Euclidean distance and correlation coefficient. And the results also support the advantage of similarity measurement based on tunnel morph model. © 2011 IEEE.

关键词： Classification (of information)

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