A PSD Maps Estimation Algorithm for Underlay Cognitive Radio Networks Based on the Convolutional Neural Network

<div>The estimation results for different sizes of incomplete PSD map images. From the first row to the third row: the incomplete PSD map with 20% grids of unlicensed users, the estimated PSD maps from MRCNN algorithm, and the real PSD maps in the target region.</div>

Mathematical Problems in Engineering

fig11

Figure 11

Figure 11: A PSD Maps Estimation Algorithm for Underlay Cognitive Radio Networks Based on the Convolutional Neural Network 