In-phase and Quadrature Chirp Spread Spectrum for IoT Communications

Ivo Bizon Franco de Almeida, Marwa Chafii, Ahmad Nimr +1

This paper describes a coherent chirp spread spectrum (CSS) technique based on the Long-Range (LoRa) physical layer (PHY) framework. LoRa PHY employs CSS on top of a variant of fre…