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In order to correct non-linearities due to high power amplifiers (HPA) operating near saturation in telecommunication transceivers, a new adaptative predistortion system based on neural networks (NNs) was developed. For size, consumption and bandwidth purposes, the multi-layer perceptron (MLP) type NNs were implemented in a 0.6mum CMOS ASIC. The NNs parameters are updated with a computer as a function...
With the increase of global satellite navigation systems (GNSS) in a limited number of frequency bands, the current spectrum dedicated to satellite navigation encounters congestion. A possible path to keep modernizing the different GNSS is to find new frequency bands where a satellite radio-navigation service (RNSS) could be provided. This article takes a regulatory approach to identify potential...
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