Two-dimensional and high-order directional information modulations for secure communications based on programmable metasurface.

ABSTRACT: Conventional wireless communication schemes indiscriminately transmit information into the whole space and pose inherent security risks. Recently, directional information modulation (DIM) has attracted enormous attention as a promising technology. DIM generates correct constellation symbols in the desired directions and distorts them in undesired directions, thus ensuring the security of the transmitted information. Although several DIM schemes have been reported, they suffer from defects of bulkiness, energy consumption, high cost, and inability to support two-dimensional (2D) and high-order modulations. Here, we propose a DIM scheme based on a 2-bit programmable metasurface (PM) that overcomes these defects. A fast and efficient discrete optimization algorithm is developed to optimize th

SUBMITTER: Xu H 

PROVIDER: S-EPMC11271469 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature