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Modified SLM algorithm based on cyclic shift and signal combination in MIMO-OFDM system
Published 2015-04-01“…In order to reduce the computational complexity of conventional selective mapping (SLM) algorithm in multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system,more candidate sequence sets will be produced.With different peak to average power ratio (PAPR) by time domain cyclic shift and signal combination between the antennas.The receiving part can restore the rotation signals by using the sequence selection order of the transmitting part and also the original signals by comparing the inversed rotation sequence with its nearest constellation points.The simulation results show that the proposed method can effectively reduce the PAPR of OFDM signals.In addition,compared with the conventional SLM algorithm,the proposed method can reduce the algorithm computation complexity significantly and obtain similar bit error rate (BER) performance.…”
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22
Novel Quantum Encryption Algorithm Based on Multiqubit Quantum Shift Register and Hill Cipher
Published 2014-01-01“…Based on a quantum shift register, a novel quantum block cryptographic algorithm that can be used to encrypt classical messages is proposed. …”
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23
Comparative Analysis of Keypoint Detection Performance in SIFT Implementations on Small-Scale Image Datasets
Published 2024-12-01“…Although libraries are based on the same algorithm, their performance differs slightly. Regarding execution time and the average number of keypoints detected in each image, vlSIFT outperforms David Lowe’s library and OpenSIFT.…”
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24
Static Voltage Stability Evaluation and Correction Strategy Based on Stage Solving Strategy and SIFT
Published 2025-01-01“…Aiming at the static voltage instability problem of the power grid caused by large-scale access of renewable energy sources, the study adopts the scale invariant feature transform algorithm for boundary feature extraction, while optimizing the traditional generalized resilience index of the power grid. …”
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25
Mean Shift Fusion Color Histogram Algorithm for Nonrigid Complex Target Tracking in Sports Video
Published 2021-01-01“…Our results of nonrigid complex target tracking by mean shift fusion color histogram algorithm for sports video improve the accuracy by about 8% compared to other studies. …”
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26
Improved information hiding algorithm based on twice positioning in coding channel
Published 2013-12-01“…Based on analysis of existing information hiding algorithms and capacities in coding channel,the defects of those existing algorithms were pointed out,and an improved information hiding algorithm with capacity upper limit analysis and based on twice positioning was proposed.the proposed algorithm,the information hiding capacity upper limit is firstly computed before embedding,and used for comparison with the size of hiding secret data.Then,twice posi-tioning scheme and cyclic shift mechanism for choosing the embedding position were used in the proposed algorithm.Simulation results show that,compared with those existing algorithms,the proposed algorithm is able to avoid the risk of exposure of the secret channel caused by capacity exceeding of hiding data.It can not only improve the randomness of the embedding position,but also avoid the risk of overlap among different secret data.The hiding performances of the coding channel information hiding system are improved.…”
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27
Rate control algorithm for no-feedback distributed video coding
Published 2014-06-01“…In order to address the high requirement of accuracy on rate estimation in the existed bit-plane-level encoder rate control (ERC) methods, a frame-level ERC algorithm was proposed. It used hierarchical fast motion compensated interpolation to obtain high quality side information estimation at the encoder, and removed the difference between bit-planes with cyclic shift to make the coding rates on each bit-plane homogeneous, therefore achieving a frame-level rate control. …”
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28
Rate control algorithm for no-feedback distributed video coding
Published 2014-06-01“…In order to address the high requirement of accuracy on rate estimation in the existed bit-plane-level encoder rate control (ERC) methods, a frame-level ERC algorithm was proposed. It used hierarchical fast motion compensated interpolation to obtain high quality side information estimation at the encoder, and removed the difference between bit-planes with cyclic shift to make the coding rates on each bit-plane homogeneous, therefore achieving a frame-level rate control. …”
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29
Pengenalan Barang Pada Kereta Belanja Menggunakan Metode Scale Invariant Feature Transform (SIFT)
Published 2018-11-01“…The algorithm proposed to detect and identify several items with image matching using Scale Invariant Feature Transform (SIFT). …”
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30
Diagnosis of Bearing Defects based on the Analysis of Vibration Images Using the RKEM SIFT Descriptor Method
Published 2024-02-01“…In this article, the method of removing additional key points of SIFT (RKEM SIFT) is used. In addition, for each descriptor, the best features are selected using the non-linear principal component analysis method. …”
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31
Shifting Control Algorithm for a Single-Axle Parallel Plug-In Hybrid Electric Bus Equipped with EMT
Published 2014-01-01“…In addition, the control algorithm is developed to improve the shifting quality of the PHEV equipped with the EMT in all its evaluation indexes. …”
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32
Kinematic Constrained RRT Algorithm with Post Waypoint Shift for the Shortest Path Planning of Wheeled Mobile Robots
Published 2024-10-01“…This paper presents a rapidly exploring random tree (RRT) algorithm with an effective post waypoint shift, which is suitable for the path planning of a wheeled mobile robot under kinematic constraints. …”
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33
New Algorithm of Tooth Profile Shift Coefficient of Hy-Vo Silent Chain based on Meshing Variation
Published 2020-01-01“…Combined with a specific example, the profile shift coefficients are calculated by the new algorithm and the classical algorithm. …”
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34
Retracted: Mean Shift Fusion Color Histogram Algorithm for Nonrigid Complex Target Tracking in Sports Video
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35
Fibre Bragg Grating Wavelength Shift Demodulation with Filtering and Enhancement of Spectra by Simple Nonlinear Signal Processing
Published 2025-03-01Subjects: Get full text
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36
Decision feedback demodulation algorithm for recursive SOQPSK-TG signal
Published 2014-07-01“…To solve the problem of one-to-one correspondence relationship not existing between state variable and cumu-lative phase in two-state trellis of shaped-offset quadrature phase-shift keying(SOQPSK-TG), a decision feedback de-modulation algorithm for recursive SOQPSK-TG is researched. …”
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37
Application of Leap-forward LFSR Based on FPGA in Pseudo Random Sequence Algorithm
Published 2018-01-01“…This paper presented a leap-forward linear feedback register algorithm which used the leap-forward idea to improve shift register. …”
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38
Application of Hough transform in contact wire wear detection algorithm
Published 2022-07-01“…For the low accuracy and poor robustness of the current contact wire wear detection system, a contact wire wear detection algorithm based on Hough transform was presented. Firstly, the profile data collected by the structured light device was preprocessed with mean shift algorithm and cubic spline interpolation; secondly, the center of the contact wire was determined according to Hough transform; finally, the wear based on the geometric characteristics of contact wire was calculated . …”
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39
Two-Step Phase-Shifting Algorithm Based on the Quadratic Spatial Filtering of Interferograms
Published 2020-01-01“…By using the quadratic spatial filtering (QSF) operation of interferograms, we propose a fast and accurate phase retrieval algorithm in 2-step phase-shifting interferometry (PSI), in which both the interference signal separation and blind phase shift estimation can be realized. …”
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40
Flood-drought shifts monitoring on arid Xinjiang, China using a novel machine learning based algorithm
Published 2025-05-01Get full text
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