Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"Directional modulation."”.
-
New Method for Directional Modulation Using Beamforming: Applications to Simultaneous Wireless Information and Power Transfer and Increased Secrecy Capacity
… a new beamforming method for direction-dependent modulation that provides wireless communications devices with enhanced physical layer security and the ability to simultaneously communicate and harvest energy by exploiting co-channel interference. We propose a method that optimizes a set of …
-
Real-time adaptive circuitry to support simultaneous radar and communications.
… and mobility for radio frequency (RF) systems. Directional modulation (DM) allows an array to perform simultaneous radar and communication operations from the same aperture at the same frequency and time, increasing spectral efficiency. In this work, a novel optimization technique – dilated …
-
Phased array impedance tuning, secure transmission, and nonlinear spatial intermodulation suppression for next-generation radar and communications systems.
… to the antenna elements. Undesired spatial intermodulation beams are transmitted as a result of the nonlinearities in these power amplifiers and can degrade both radar and communications mission abilities. The research presented in this dissertation resolves the nonlinear intermodulation products …
-
Reconstructing nuclear recoil tracks in the Dark Matter Time Projection Chamber
… dark matter halo should exhibit a unique daily directional modulation for which experiments can search . The Dark Matter Time Projection Chamber (DMTPC) group aims to provide an unequivocal detection of WIMP particles through the anisotropy in the angular recoil spectrum. DMTPC uses a …