This paper examines reliable and energy-efficient transmission in low earth orbit (LEO) satellite communication systems. In particular. we analyze the link transmission characteristics of the LEO satellite to the ground user and model the channel as a combination of large-scale fading and small-scale fading. Based on this. https://www.roneverhart.com/M-M-s-Milk-Chocolate-Candy-Teal-2LB-Bag/