Orthogonal Chirp Division Multiplexing for High-Speed Terahertz Wireless Systems

Abstract

6G systems are expected to operate in the THz bandto support ultra-high data rates. However, severe propagationimpairments in THz channels pose significant challenges. Thispaper presents a new channel model and numerical analysisof a THz system using orthogonal chirp division multiplexing(OCDM). The system includes chirped waveforms at 300 GHz,minimum mean square error (MMSE) equalization, amplitudemodulation, and three ray-tracing-derived indoor environments:spacious hall, long corridor, and empty room. Results showOCDM enhances resilience to multipath effects, especially forlower-order modulations. The findings highlight OCDM withenvironment-aware techniques as a robust solution for futureTHz communication