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This paper introduces new techniques for ultra-wideband (UWB) joint spatial coding in order to establish a secure line-of-sight wireless communication link, performing precision localization of point objects, and generating high-resolution images from complex scenes. For the proposed technique, symbol generation and coding are jointly performed by multiple widely spaced transmitters. This method enables...
This paper presents a time-domain pulse-based directional modulation technique that enables secure wireless communication at the physical level. We use a train of sub-200psec pulses to achieve an information beamwidth of 1° while using antennas with a broad radiation pattern. The proposed technique leverages the advantages of a pulse-based system to demonstrate secure communication.
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