Joint Optimization Algorithm for Adaptive Filtering and Dynamic Resource Allocation in 5G NTN Low Earth Orbit Satellite Communications

With the deep integration of 5G and Non-Terrestrial Networks (NTN), Low Earth Orbit (LEO) satellites have emerged as key enablers for constructing integrated space-air-ground communication networks due to their wide coverage and flexible deployment.However, the high-speed movement of LEO satellites results in rapidly time-varying channels and multipath fading, causing significant signal degradation from noise and interference.Meanwhile, the surge in access devices demands urgent dynamic allocation of resources such as spectrum and power.Existing studies show that traditional fixed-parameter filtering algorithms struggle to track time-varying channels, static resource allocation schemes fail to fully exploit channel state information, and single-resource optimization neglects the coupling between multiple resources.Some joint optimization approaches suffer from poor dynamic adaptability and high computational complexity.To address these challenges, this paper proposes a joint optimization method for adaptive filtering and dynamic resource allocation tailored for 5G NTN LEO satellite communications.First, an improved adaptive filtering algorithm with dynamic parameter adjustment is designed to optimize filtering parameters in real time based on channel state estimation, enhancing signal interference resilience.Then, leveraging precise channel state information, a dynamic resource allocation algorithm considering service demands and resource constraints is developed to achieve cross-layer collaborative allocation of spectrum and power resources.A joint optimization framework aligned with the LEO satellite communication scenario is constructed, where the synergy between signal processing and resource allocation effectively improves system communication reliability and resource utilization efficiency.This provides theoretical and technical support for the practical deployment of 5G NTN LEO satellite systems.