Nonlinearity Mitigation for Coherent Ground-to-Satellite Optical Links

2026-01-09

arXiv.org

AI Summary

This work addresses the severe performance degradation in satellite-to-ground coherent optical communication caused by nonlinear distortions introduced by high-power optical amplifiers. To mitigate this issue, the paper proposes a low-complexity digital signal processing scheme that incorporates an efficient nonlinear compensation algorithm. The approach significantly enhances the link’s tolerance to channel loss with negligible increase in system complexity. Experimental results demonstrate that the proposed method improves the allowable link loss by 6 dB, effectively alleviating nonlinear impairments and offering a practical solution for high-power satellite-to-ground optical communication systems.

Technology Category

Search and Optimization: Non-convex OptimizationMachine Learning: OptimizationConstraint Satisfaction and Optimization: Distributed CSP/Optimization

Application Category

Systems and Infrastructure for Web, Mobile and WoT: Energy management for devices in mobile Web and WoT environmentsSecurity and Privacy: Large-scale security measurementsEconomics, Online Markets and Human Computation: Economic ramifications for generative AI infrastructure and applications

Abstract

We propose digital signal processing techniques for nonlinearity mitigation in high power optical amplifiers used in satellite communications. The acceptable link loss increases by 6dB with negligible complexity.

Problem

• nonlinearity mitigation
• coherent optical links
• ground-to-satellite communication
• optical amplifiers
• satellite communications

Innovation

• nonlinearity mitigation
• digital signal processing
• optical satellite communications
• high power optical amplifiers
• link loss improvement