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[Report papers] Simulation of Wireless Communication Systems using MATLAB DL : 0: Objective: Simulate a simple communication system and estimate bit error rate. I System Characteristics: I BPSK modulation, b 2 {1,−1} with equal a priori probabilities, I Raised cosine pulses, I AWGN channel, I oversampled integrate-and-dump receiver front-end, I digital matched filter. I Measure: Bit-error rate as a function of Es/N0 and oversampling rate.
Date : 2021-05-04 Size : 631.73kb User : jivisadirov@gmail.com
[Report papers] Robust Image Watermarking Based on Generative Adversarial Network DL : 0: Digital watermark embeds informa- tion bits into digital cover such as images and videos to prove the creator’s ownership of his work. In this paper, we propose a robust image watermark algorithm based on a generative adversarial network. This model includes two modules, generator and adversary. Generator is mainly used to generate images embedded with watermark, and decode the image dam- aged by noise to obtain the watermark. Adver- sary is used to discriminate whether the image is embedded with watermark and damage the image by noise. Based on the model Hidden (hiding data with deep networks), we add a high-pass filter in front of the discriminator, making the watermark tend to be embedded in the mid-frequency region of the image. Since the human visual system pays more attention to the central area of the image, we give a higher weight to the image center region, and a lower weight to the edge region when calcu- lating the loss between cover and embedded image. The watermarked image obtained by this scheme has a better visual performance. Experimental results show that the proposed architecture is more robust against noise interference compared with the state-of-art schemes.
Date : 2021-05-05 Size : 688kb User : bamzi334