正交频分复用
电子工程
计算机科学
啁啾声
多路复用
衰退
稳健性(进化)
频分复用
通信系统
千兆位
光纤无线电
光纤
工程类
电信
光学
频道(广播)
物理
激光器
生物化学
化学
基因
作者
Lianyi Li,Lu Zhang,Hongqi Zhang,Zhidong Lyu,Zuomin Yang,Xiaodan Pang,Vjačeslavs Bobrovs,Oskars Ozoliņš,Huazhang Zhao,Lishuang Feng,Changming Zhang,Xianbin Yu
标识
DOI:10.1109/jlt.2023.3311645
摘要
To achieve integrated sensing and communication (ISAC) applications with high data rates and high resolution, the terahertz-over-fiber (ToF) system has been recognized as a promising solution. However, the frequency-selective fading would deteriorate the performance of the ToF-based ISAC systems. In this work, we propose the orthogonal chirp division multiplexing (OCDM) waveform-based ToF system for high-performance ISAC applications. The system encodes data with the phase of the sub-chirps and obtains radar images by processing echoes with the zero-padded matched filtering algorithm. We experimentally demonstrate a proof-of-concept OCDM-ToF system, which simultaneously achieves a 32 Gbit/s data rate and 1.875 cm range resolution after transmission over a 10 km optical fiber and a 3.14 m wireless link at the THz band, for the first time. The experimental results indicate that the OCDM-ToF system can enhance robustness against the frequency-selective fading issue, as a benefit improving communication performance with high data rates while preserving the high sensing resolution of OFDM in the THz ISAC applications.
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