Abstract: In this paper, we propose a novel off-grid direction-of-arrival (DOA) estimation method in large-scale semi-passive reconfigurable intelligent surface (RIS) environments, utilizing quadratic ...
Learn the 3 times table and its division facts with the resources below. You can take a quiz, practise mental arithmetic and learn a 3 times table song. Need to practise your 5 times table? Then look ...
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