As the application of the Internet of Things (IoT) becomes increasingly widespread, satellite communication systems based on Free-Space Optical Communication (FSOC) play a crucial role in providing more stable communication services for IoT applications. However, wavefront distortion and beam scintillation caused by atmospheric turbulence significantly reduce the communication efficiency of FSOC systems. In this paper, the convex partially coherent flat-topped vortex hollow (CPC-FTVH) beams are employed as beam sources to improve the beam propagation performance under atmospheric turbulence. Using numerical simulation methods, the propagation process of the CPC-FTVH beams under atmospheric turbulence is simulated. The results explain why the CPC-FTVH beams can improve the communication efficiency in turbulence links. Furthermore, we calculated the aperture mean scintillation index and the signal-to-noise ratio (SNR) to evaluate the beam propagation performance and communication potential. The results show that the CPC-FTVH beams have a lower aperture mean scintillation index and provide a significant SNR gain compared to the conventional partially coherent flat-topped vortex hollow (PC-FTVH) beams and Gaussian Schell-model beams. This research provides a new idea for improving FSOC systems and has the potential to increase the reliability of IoT communications.