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Power Analysis (PA) is a powerful method to extract leakage information from theoretically secure cryptographic devices. In general, Differential Power Analysis (DPA) correlates the processed data with power consumption of devices through statistical analysis to reveal systems' secret key. A common approach to counteract DPA is a low-entropy lightweight masking strategy. This masking scheme, known...
Coherent optical time-domain reflectometer (COTDR) has shown high sensing resolution, but it is sensitive to noise, polarization and frequency shift. Wavelet smoothing DSP (Digital Signal Processing), combined with direct-detecting method and precise optical frequency shift controlled by microwave electro-optical modulation, is proposed for improving the performance of COTDR. A resolution of 0.1°C...
In order to study the topology of the Earth-Mars relaying network with the Sun-Earth Lagrange points L4 and L5 used as the relaying nodes, 0–1 programming model on one-hop link and two-hop links was set up, the maximum throughput as the objective function, and total minimum throughput and accumulated connection time of each day as the constraint condition. A network topology is designed for one Earth-Mars...
Multiple-input multiple-output (MIMO) radars use spatial diversity to improve the performance of the radar. For MIMO radar with widely separated antennas, target echo signals received by its widely separated antennas may be partially correlated. In this paper, we consider the effect of the correlation of the scattered signals on detection performance. This is achieved by using a finite number of small...
The core concept of Smart Grid (SG) is to enhance the level of intelligent management for power grid by the application of modern information, communication and other advanced technologies. With wide coverage, high reliability and large capacity, the Long-Term-Evolution (LTE) network is widely used in the SG wireless communication. However, SG is different from traditional cellular networks. Many...
Buffer sharing based on pipeline parallelism is quite susceptible to inter-core communication overhead. Existing work on concurrent lock-free (CLF) queue algorithm did not take full advantage of CPU cache features to improve performance. In order to implement a fast single-producer-single-consumer (SPSC) buffer scheduling queue, this paper proposes a cache-friendly CLF queue scheduling algorithm (CFCLF),...
In space information network (SIN), Low Earth Orbit (LEO) satellites or aircrafts need to communicate with Geostationary Orbit (GEO) satellites. However, due to the non-uniform distribution of traffic in SIN, the load of each beam is different, thus the heavier loaded beams may increase the traffic transmission time. In order to reduce the transmission time, a multi-beam load balancing scheme based...
Efficiently of spectrum allocation is the key for dynamic spectrum access in the Cognitive Radio Network (CRNs). Based on graph coloring model, this paper proposes a random drift particle swarm optimization (RDPSO) algorithm to allocate the spectrum, with the purpose of improving the reward and fairness of network. The RDPSO algorithm introduces the thermal coefficient and drift coefficient, and it...
We presented a combination of a new coding technique called Multi Slot Amplitude Coding (MSAC). By jointing Optisystem and Matlab, the coding and decoding of MSAC, Duty Cycle Division Multiplexing (DCDM) and Absolute Polar Duty Cycle Division Multiplexing (APDCDM) all are achieved in a same Free Space Optical (FSO) communication system. By comparing average energy of each symbol, different mapping...
A high-speed full-duplex system based on IFoF for the RAN is proposed and experimentally demonstrated, whose wireless carrier operates at the 28GHz-frequency. A 28GHz-full-duplex BS module is developed and the complete uplink/downlink of the system is experimentally established, which supports up to 2GHz analog bandwidth, and meanwhile 1Gb/s BPSK signal accomplishes the uplink/downlink transmission...
We introduce a model of a combination of particular low density parity check (LDPC) code and quadrature-quadrature phase shift keying (Q2PSK) constellation for the application of the downlink of the unmanned aerial vehicle (UAV) data chain. This model is a modification of the combination of LDPC code and constant envelope Q2PSK (CEQ2PSK) constellation. It achieves higher bandwidth efficiency of 4/3...
Aiming at the current medical cosmetology, late into the film and television both photo editing and predicting the baby looks specific application in the field of entertainment, this paper proposes a face fusion technology based on Laplacian pyramid (LP). Firstly, Harris corner detection technology is introduced in the technology whether source face image and the target face image features at the...
One of the common drawbacks of existing observation attacks resistant PIN-entry schemes employing audios is that the user has to carry an earphone with him/her. Herein, we propose a simple observation attacks resistant PIN-entry scheme for mobile devices employing audios, Audio-PES, in which the device's receiver is used by the system to covertly transmit secret challenges to the user. In particular,...
Tight coupling of business and the software implementation is the biggest difficulty of designing software system architecture. The business change will inevitably lead to software restructuring, which is the necessary result of business-driven development, and it greatly restrict the development of software productivity. Metadata driven design, as an architecture pattern, can effectively reduce the...
Aiming at the problem that traditional 2D Otsu has the large calculation and long computation time, a two-dimensional Otsu image segmentation method based on the cellular genetic algorithm is proposed. By using cellular genetic algorithm to optimize and avoid the characteristics of local optimization, calculating threshold segmentation point of the two-dimensional Otsu image segmentation, and then...
This paper proposes a new spatio-temporal appearance feature named Phasic Maximal and Local Maximal Occurrence (PM-LOMO) representation for video-based person re-identification. To perform temporal alignment of the sequence, we selected the optimal period of walking cycle and divide frames into several phases based on the extreme points of the sequence's Flow Energy Profile (FEP). To describe the...
Face recognition using representation based classification (RC) is a new hot technique in recent years. However, the recognition rate degrades when the misalignment problem occurs, especially in unconstrained environment. In this paper, a novel framework of RC multi-view face recognition is proposed. A 3D reference model is used for projection matrix approximating. The train frontal face samples are...
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