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1 International Journal of Electronics and Telecommunications

1 2025

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Design of Terahertz Band 1-Bit Reconfigurable Intelligent Surface: applications and coding methodologies

Zhang Minyu, Yashchyshyn Yevhen

International Journal of Electronics and Telecommunications

2025

Vol. 71, No. 4

In the forthcoming 6G wireless communication networks, it is crucial to address the challenges of massive information capacity and ultra-high data transmission rate. Terahertz (THz) band communication emerges as a promising candidate to meet these demands. However, the natural physical characteristics of THz signals, including significant attenuation in transmission and limited diffraction capabilities, pose substantial limitations on their practical applications. In recent years, reconfigurable intelligent surfaces (RIS) have garnered significant interest due to their exceptional potential in manipulating electromagnetic (EM) waves. RIS is anticipated to mitigate the challenges associated with THz communication. In this research, we introduce a RIS design featuring 1-bit phase modulation operating within THz bands. The RIS units leverage PIN diodes to dynamically adjust the unit structure, enabling dynamic encoding of the RIS metasurface based on the on and off states of diodes. In this paper, three typical application scenarios, including beam scanning, beam convolution, and radar cross section (RCS) reduction, are listed. Coding methodologies including fractional coding, convolution, Golay-Rudin-Shapiro (GRS) coding, and Genetic Algorithm (GA) coding, are deployed, and simulation results illustrate the effectiveness. This study lays the groundwork for the practical deployment and coding strategies of RIS in the THz bands, thereby facilitating the integration of THz technology into the next generation of 6G communication systems.