12 Result(s)
within
Conference Paper
Liming Zheng
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Chapter and Conference Paper
Generalized Snell’s Law and Its Verification by Metasurface
The generalized Snell’s law derived based on Fermat’s principle and the boundary conditions of continuity are introduced in this paper. The 3D format of generalized Snell’s law is also demonstrated. The genera...
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Chapter and Conference Paper
Influence of Low-Frequency Vibration Acceleration on the Permeability of Low Permeable Porous Media During Water Flooding
Seismic production technology utilized physical wave field to stimulate the reservoir. Though this technology was applied once in the oil fields, the mechanisms were not analyzed comprehensively. Influence of ...
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Chapter and Conference Paper
Three-Dimensional Computational Imaging with One Liquid Crystal Lens Camera and Refocusing from Extended Depth of Field Intensity and Depth Image Pair
This paper proposes a novel refocusing method that can effectively, digitally refocus objects on the arbitrary plane of the three-dimensional scene from the all-in-focus intensity and depth image pair with a l...
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Chapter and Conference Paper
Low Complexity Decoding Scheme for LDPC Codes Based on Belief Propagation Algorithm
The low-density parity check codes (LDPC codes) are block codes whose performances are close to the Shannon limit. LDPC codes have the strong ability for error correction. The decoding algorithm of LDPC codes ...
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Chapter and Conference Paper
Low-Complexity Signal Detection Based on SOR Method Exploring an Efficient Relaxation Range for Massive MIMO Systems
In order to reduce the complexity of Massive multiple-input multiple-output (MIMO) signal detection, the iterative method is utilized for signal detection. Based on the implementation and analysis of the succe...
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Chapter and Conference Paper
BER Performance Evaluation of Downlink MUSA over Rayleigh Fading Channel
Downlink multi-user shared access (MUSA) is a non-orthogonal multiple access scheme (NOMA) based on the traditional power domain superposition and uses a mirror constellation to optimize the modulated symbol m...
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Chapter and Conference Paper
Machine Learning Based Key Performance Index Prediction Methods in Internet of Industry
The Internet of industry (IoI) has been well advanced in modem factory accompanying with increasing application of sensor network. The industry intelligent is just basing on techniques of IoI and industry data...
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Chapter and Conference Paper
Short Term Prediction Models of Mobile Network Traffic Based on Time Series Analysis
In the mobile network, building a prediction based network traffic model is of great significance for mobile network optimization, so that the operators is able to schedule the resources adaptively. In the pap...
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Chapter and Conference Paper
Low-Complexity Signal Detection Scheme Based on LLR for Uplink Massive MIMO Channel
This paper proposes low-complexity detection algorithms for Massive MIMO system: Multiple Dominant Eigenvector Detection Algorithm (MDEDA) and Antenna Selection Scheme (ASS). Both the schemes calculate the log...
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Chapter and Conference Paper
Channel Estimation Based on Approximated Power Iteration Subspace Tracking for Massive MIMO Systems
Traditional semi-blind channel estimator is based on eigen value decomposition (EVD) or singular value decomposition (SVD), which effectively reduces the interference through dividing the observed signal into ...
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Chapter and Conference Paper
Research on Method of Highlight Elimination Based on Color Space Conversion in Metal Images
In the process of three-dimensional detection with computer vision, there is a highlighted phenomenon in metal artifact surface. It leads to the interference problem in subsequent detection. To solve this ques...
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Chapter and Conference Paper
Research of Improved Adaptive Median Filter Algorithm
This paper proposes an improved adaptive median filter algorithm for highly corrupted images with salt-and-pepper noise. First of all, the improved adaptive median filter makes full use of the relationship bet...
