An advanced fractal optimisation method for network energy and power based on cellular massive MIMO based on photovoltaic technology

User communication needs drive the wide application of cell-free massive MIMO systems. Network energy consumption significantly affects communication quality and efficiency. Photovoltaic systems provide real-time electricity, dynamically adjusting MIMO parameters based on output changes to ensure stable operation. This article aims to enhance user experience and optimise energy distribution in communication systems. It constructs a basic system model, defines network signal power optimisation, applies photovoltaic technology for sustainable energy supply, and solves the optimisation problem using PSO. Simulations compare pre- and post-optimisation effects, revealing a 20.24% energy efficiency improvement in photovoltaic-based communication systems with 100 access points. The proposed method enhances communication efficiency and optimises energy distribution in networks.