D2D通信仿真，D2D的模型实现，节点50 100 200，小场景仿真，大场景仿真，定积分不定积分，数学公式-D2D communication

3节点协作通信仿真，包含放大转发和译码转发，不同合并策略对比等-3 Node cooperative communication simulation, including zoom forwarding and decode forwarding and contrast different strategies merge