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Key Generation Based on Large Scale Fading

This correspondence paper investigates key generation performance in environments with large scale fading including path loss and shadow fading. The path loss is found to be affected only by the distance between users and not secure for key generation. The shadow fading effect is caused by large obstacles such as buildings. The correlation relationships of the shadow fading are modelled and demonstrated to meet the requirements of key generation principles. Monte Carlo Simulations have been carried out and validated that shadow fading-based key generation is feasible and secure.