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This paper presents a novel VLSI hardware architecture for the real-time high-throughput implementation of the HEVC deblocking filtering. Based on the proposed implementation-friendly boundary judgment method, a dedicated multi-parallel architecture composed of four parallel filtering cores, parallel luma/chroma filtering and parallel vertical/horizontal edges filtering is presented. Experimental...
Previously, a lot of applications on recurrent neural networks with multi-valued neuron (MVNRNNs) in asynchronous update mode, used zero diagonal elements as network stability condition. However, according to our recent finding, only positive diagonal elements can guarantee the whole network to be complete convergent. How to adopt positive diagonal element to amend former research results is still...
Like the previous video coding standard, DCT and quantization are also adopted in HEVC. Compared with H.264/AVC, HEVC employs larger transform blocks, which makes the all zero block detection algorithm designed for H.264/AVC inefficient for HEVC. An efficient all zero block detection algorithm aimed at HEVC, especially for 16×16 and 32×32 transform blocks, is proposed in this paper based on frequency...
This paper presents a linear phased array antenna with beam steering capability designed for WiFi and LTE mobile standards. The proposed antenna array utilizes 4 elements of patch antenna arranged in a flat configuration. The antenna element used in the array exhibits dual band characteristic covering 2 wide frequency bands; 2.35 GHz to 2.8 GHz (lower band) and 5 GHz to 5.5 GHz (upper band). To excite...
One important component of China Fusion Engineering Test Reactor (CFETR) is central solenoid which plays a key role in producing, forming and stable operation of plasma. It is difficult to design and manufacture large superconducting CS magnet due to the extreme operating conditions, so it is meaningful to design central solenoid model coil (CSMC) and analyze its electromagnetic properties in advance...
This article discusses how to use the resources of MOOC and Flipped Classroom related to mental health to improve the teaching quality of mental health education courses, how to apply Wechat platform and websites related to mental health to promote publicity of mental health education, and how to utilise online psychological counselling and electronic files of mental health to improve the effectiveness...
State-of-the-art hearing aids feature multiple microphones per hearing aid and employ spatial filtering algorithms that are in general superior to single-channel algorithms. Spatial filtering algorithms require usually the direction-of-arrival (DOA) of the desired sound source. Recently developed informed spatial filters are based on a parametric signal model, and require an estimate of the DOA per...
This paper proposes a wideband low-noise down converter with operational frequency ranging from 0.8–3GHz in 0.18µm SiGe technology. The down converter is based on a double balanced Gilbert cell configuration with folded structure to lower the supply voltage. The folded structure also allows separate bias for the mixer and the gm stages to optimizing their performances. Bipolar based gm cell with noise...
This work presents a dual-band transformer-based voltage controlled oscillator (VCO) with phase noise optimization. Transformers consisting of four inductors are employed to reduce area. Four cross-coupled VCO cores are connected to the four wings of two pairs of transformers to allow individual control of the cores, whose mutual inductance is utilized to enhance the frequency tuning. Also, the capability...
Positron Emission Mammography (PEM) imaging systems with the ability in detection of millimeter-sized tumors were developed in recent years. And some of them have been well used in clinical applications. In consideration of biopsy application, a double-plane PET is more practical than a ring detector for the convenience of breast immobilization. In this study, the possibility of the imaging-guided...
Face recognition research mainly focuses on traditional 2D color images, which is extremely susceptible to be affected by external factors such as various viewpoints and has limited recognition accuracy. In order to achieve improved recognition performance, as well as the 3D face holds more abundant information than 2D, we present a 3D human face recognition algorithm using the Microsoft's Kinect...
MapReduce is an attractive programming model for large-scale data-parallel applications. However, the original MapReduce framework also needs some optimizations to improve its performance. In this paper, we propose a novel bloom filter based lightweight MapReduce index (BF-MapReduce). Instead of scanning the whole dataset, our approach uses an auxiliary index to quickly skip unnecessary data segments,...
With the resolution of video sequences increasing, the memory bandwidth and space requirement has become one bottleneck of a video coding system. Most of previous frame memory compression works merely focused on reducing the averaged bandwidth demand. In this paper, a lossless frame memory compression algorithm for motion estimation in HEVC and the corresponding hardware architecture are described...
Satellite navigation and positioning system has much to do with the fields such as life, scientific research and military industry. In order to ensure long-term and reliable working onboard, the redundancy design with more atomic clocks has been adopted. When the chief clock doesn't operate properly, a swtich from the chief clock to one warm spare clock will smoothly take place to ensure the stable...
Byzantine fault is the fault that can make the components behave arbitrary and may cause disastrous results. With the increasing malicious attacks and software errors, Byzantine fault tolerance has begun to draw more attention it deserves. Previous Byzantine fault tolerant algorithms have strong assumption that all the replicas is synchronous and do not support replicated calling services, which make...
This paper presents optimal design of cryogenic simulation environment systems. The design of cryogenic environment consists of optimal design of cooling dehumidification, desiccant wheel and pre-treatment of regeneration air. Behind the dehumidifier, two refrigeration units are used as the secondary cooling and dehumidification in order to effectively reduce the fluctuation of indoor temperature...
High quality Mn1.56Co0.96Ni0.48O4 films with different layers have been prepared on Pt//Ti/SiO2/Si substrate. Infrared optical properties of the films have been investigated using infrared spectroscopic ellipsometry. The optical constants have been obtained by fitting the measured ellipsometric parameter data with classical infrared model.
High Efficient Video Coding (HEVC) adopts a quad-tree structure to partition the Coding Unit (CU). Each CU can be split into smaller CUs recursively. It achieves high coding efficiency. But it also dramatically increases the computational complexity. This paper proposes a fast coding unit depth decision algorithm for HEVC inter prediction which can provide better coding efficiency. The proposed algorithm...
In some group-oriented applications, users can access several data resources according to their respective willingness. So, how to effectively access the data resources is a challenge in multi-privileged group communications. Some key management schemes for hierarchical access control are proposed. In this paper, we discuss the challenges of key management. Then, we present a list of evaluation criteria...
Vehicular ad hoc networks (VANETs) are regarded as essential ways for vehicles to share information with each other. As communication range is limited, multiple relay nodes are often required for establishing the multi-hop routing path between the source node and the destination node. Dependability of such routing path may be compromised due to different motion states of vehicles. In this paper, we...
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