Joint Power and Channel Allocation for D2D Communication in Cellular Networks -- Design of Laser Holographic Digital Image Compensation Resource Cloud Storage Platform -- Research on Librarian Demand Prediction Based on the GM (1,1) model and BP Neural Network Combined Model -- Offloading Strategy of Computing Tasks in Cooperative Vehicle Infrastructure Systems -- Analysis and Implementation of Safe Transmission and Cluster Expansion Based on Tomcat -- Research on Key Technologies of New Generation Vehicle Wireless Network.