Time-coding spread-spectrum reconfigurable intelligent surface for secure wireless communication: theory and experiment | Zendy

Xiaoyi Wang | Zendy; GuoMin Yang | Zendy

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Time-coding spread-spectrum reconfigurable intelligent surface for secure wireless communication: theory and experiment

Author(s) -

Xiaoyi Wang,

GuoMin Yang

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.437938

Subject(s) - wireless , computer science , spread spectrum , coding (social sciences) , encryption , electronic engineering , computer network , telecommunications , engineering , channel (broadcasting) , mathematics , statistics

We present a time-coding reconfigurable intelligent surface (RIS) enabled spread-spectrum secure wireless communication system. The time-coding spread-spectrum RIS is realized by altering the RIS between the two states of a perfect electrical conductor (PEC) and perfect magnetic conductor (PMC), according to a pseudo-random time sequence, respectively. This spectrum spreading function of the time-coding RIS can be simply applied to the secure wireless communication systems, providing a low-cost, easy-implementation encrypting architecture with the two key features of interception prevention and interference suppression. These two features together with the overall spread-spectrum secure wireless communication system are demonstrated by both theoretical analysis and experimental results using a designed 8 × 8 time-coding RIS.

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