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According to the tensor diffusion theory, this paper proposes a novel active contour model for image segmentation in the level set formulation. Firstly, we define an external energy term using the trace-based tensor diffusion equation, which can locate the evolution curve to the neighborhood of one target boundaries adaptively. So it will enhance the robustness of the model to the initialization of...
This paper presents an efficient compensation band limited digital predistortion (CBL-DPD) architecture for the wideband Orthogonal Frequency Division Multiplexing (OFDM) transmitter system. Compared with traditional band limited digital predistortion (BL-DPD), the CBL-DPD adds a low pass filter (LPF) and an error compensation term, which has lower complexity and higher precision. Simulation results...
As the most widely used standards for wireless local area network (WLAN), IEEE 802.11 standards are continuously amended by introducing new techniques so as to meet the increasing demands. In order to verify the performance of amended protocols, network simulation is considered as a significant method. However, as far as we know, current simulation tools are only for either media access control layer...
With one class outnumbering another, many real classification tasks show imbalanced class distributions, which brings big trouble to standard classification models: they usually intend to recognize a minority instance as a majority one. The data gravitation based classification (DGC) model, a newly developed physical-inspired supervised learning model, has been proven effective for standard supervised...
Certificate less public key cryptography is an attractive paradigm since it eliminates the use of certificates in traditional public key cryptography and alleviates the inherent key escrow problem in identity-based cryptography. Recently, Xiong et al. Proposed a certificate less signature scheme and proved that their scheme is existentially unforgeable against adaptive chosen message attack under...
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