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arXiv · 2410.02514

Propagation Distance Estimation for Radio over Fiber with Cascaded Structure

Dexin Kong·Diana Pamela Moya Osorio·Erik G. Larsson
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Abstract

Recent developments in polymer microwave fiber (PMF) have opened great opportunities for robust, low-cost, and high-speed sub-terahertz (THz) communications. Noticing this great potential, this paper addresses the problem of estimation of the propagation distance of a sub-Thz signal along a radio over fiber structure. Particularly, this paper considers a novel cascaded structure that interconnects multiple radio units (RUs) via fiber for applications in indoor scenarios. Herein, we consider the cascaded effects of distortions introduced by non-linear power amplifiers at the RUs, and the propagation channel over the fiber is based on measurements obtained from transmissions of sub-THz signals on high-density polyethylene fibers. For the estimation of the propagation distance, non-linear least-squares algorithms are proposed, and our simulation results demonstrate that the proposed estimators present a good performance on the propagation distance estimation even in the presence of the cascaded effect of non-linear PAs.

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Dexin Kong, Diana Pamela Moya Osorio, Erik G. Larsson. 2025-10-15. Propagation Distance Estimation for Radio over Fiber with Cascaded Structure. https://doi.org/10.1109/spawc60668.2024.10694520

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