Computational capability 1 Deep neural networks 1 Distributed machine learning Errors 1 Estimation errors 1 Federated Learning 1 Federated learning 1 Machine learning methods 1 Mean square error 1 Over the airs 1 Over-the-Air Computation 1 Over-the-air computation 1 Power control 1 Power control schemes 1 Retransmissions 1 Signal to noise ratio 1 Wireless devices 1