TY - CONF T1 - Design of projection matrices for PRNU compression T2 - 2017 IEEE Workshop on Information Forensics and Security (WIFS) Y1 - 2017 A1 - L. Bondi A1 - Fernando Pérez-González A1 - P. Bestagini A1 - S. Tubaro KW - acquisition time KW - cameras KW - computational complexity KW - data compression KW - defacto standard KW - design methodology KW - digital photo KW - forensics investigators KW - image coding KW - Image forensics KW - image sensors KW - image source identification KW - interpolation KW - matrix algebra KW - nearly-flat spectral characteristics KW - Performance evaluation KW - photo response nonuniformity KW - PRNU compression KW - probability KW - projection matrices KW - public image dataset KW - Signal to noise ratio KW - silicon sensor imperfections KW - specific camera sensor KW - weak multiplicative noise JF - 2017 IEEE Workshop on Information Forensics and Security (WIFS) ER - TY - JOUR T1 - Performance of the Multibeam Satellite Return Link with Correlated Rain Attenuation JF - IEEE Transactions on Wireless Communications Y1 - 2014 A1 - Arnau, Jesus A1 - Christopoulos, D. A1 - Chatzinotas, S. A1 - C. Mosquera A1 - Ottersten, B. KW - Antennas KW - Approximation methods KW - Attenuation KW - Correlation KW - dynacs KW - Rain KW - satcom KW - Satellites KW - Signal to noise ratio AB -
Rain attenuation is among the major impairments for satellite systems operating in the K band and above. In this paper, we investigate the impact of spatially correlated rain attenuation on the performance of a multibeam satellite return link. For a comprehensive assessment, an analytical model for the antenna pattern that generates the beams is also proposed. We focus on the outage capacity of the link, and obtain analytical approximations at high and low SNR. The derived approximations provide insights on the effect of key system parameters – like the inter-user distance, the satellite beam radius, or the rain intensity– and simulation results show that it fits tightly to the Monte Carlo results. Additionally, the derived expressions can be easily particularized for the single-user case, providing some novel insights.
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