This paper presents a novel MIMO antenna array configuration that incorporates metamaterial isolation surfaces to enhance overall performance. It was demonstrated that the directivity of this antenna array can be precisely electronically reconfigured using PIN diode switches. Additionally, the feasibility of integrating solar panels with the proposed MIMO antenna array is shown. Adopting solar panels in 5G base stations is expected to reduce dependency on traditional grid power sources, thereby decreasing energy usage and operational expenses, and supporting the goal of achieving netzero emissions in communication systems. Furthermore, the effectiveness of an artificial intelligence (AI)-enabled equalizer in mitigating degradation in channel capacity caused by signal power fluctuations was demonstrated, thereby enhancing the reliability and efficiency of wireless communication systems. The multifaceted benefits of combining these technologies were demonstrated.
