  In this paper, we present a new receiver design, which significantly improves
performance in the Internet of Things networks such as LoRa, i.e., having a
chirp spread spectrum modulation. The proposed receiver is able to demodulate
multiple users simultaneously transmitted over the same frequency channel with
the same spreading factor. From a non-orthogonal multiple access point of view,
it is based on the power domain and uses serial interference cancellation.
Simulation results show that the receiver allows a significant increase in the
number of connected devices in the network.
