NEW DIMENSIONS TO STRETCH THE LIMITS OF LORA-BASED MODULATION

Recently, the world has witnessed rapid innovations in the world of Internet of Things (IoT). LoRa has rapidly established itself as one of the front runners among low power wide area networks (LP-WAN) serving as the key infrastructure to support numerous IoT applications. LoRa is a patented chirp spread spectrum modulation that has recently gained great interest both in research and commercially. LoRa networks are considered to be capacity-limited networks. The LoRa capacity constraints are mainly attributed to the adopted ALOHA medium access scheme that exhibit excessive inevitable collisions for LoRa transmissions. The LoRa capacity constraints may hinder the growth potential of LoRa due to tremendous growth in underlying IoT applications demands. Accordingly, this talk explores new dimensions to expand the data rate and capacity of LoRa networks. Within this context new LoRa-like signals are introduced from interleaved versions of nominal LoRa signals. The new LoRa signals are labeled Interleaved Chrip Spreading LoRa (ICS-LoRa). The new ICS-LoRa signals are designed to guarantee good cross correlation properties with nominal LoRa signals. The performance enhancements of ICS-LoRa are presented both theoretically and practically..