In coded mask techniques, reconstructed sky images are pseudo-images: they are maps of the correlation between the image recorded on a detector and an array derived from the coded mask pattern.

A new class of caching schemes, called coded caching can significantly reduce the communication bandwidth requirement for satisfying users’ demands by utilizing the multicasting gain among multiple users. Most existing works assume that the users follow the prescriptions for content placement made by the system. However, users in practice prefer to decide what files to cache or discard some par...

We investigate the optimal design of uniform rectangular arrays (URAs) employed in multiple-input multiple-output communications, where a strong line-of-sight (LOS) component is present. A general geometrical model is introduced to model the LOS component, which allows for any orientation of the transmit and receive arrays, and incorporates the uniform linear array as a special case of the URA....

In this lecture, we provide an overview of some recent algorithms for radar waveform design. We first illustrate the concept of matched illumination for optimized target detection and identification. This theory derives the optimized transmission signal and the corresponding receiver response which maximizes the Signal to Noise Ratio (SNR). The second part of the lecture is focused on waveform ...

In this letter, we propose the designs of 1-bit and 2-bit digitally coded metasurfaces, which achieve anomalous reflection-based beam steering. First, demonstrate systematic design flow metasurface using phase gradient digital unit cells to reflection in preferred direction for a normally incident plane wave. Initially, procedure is analytically implemented get profiles metasurfaces having equa...