LoRa-E: Overview and Performance Analysis
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LoRa-E is a new physical layer developed by Semtech to increase the capacity of LoRaWAN in dense and congested deployments. It has also been designed to address extremely long-range and large-scale communication scenarios with a focus on reaching gateway devices installed on satellites. Thanks to its design principles, it finely manages packet transmission, enabling Quality-of-Service policies on a per-packet basis. The core of LoRa-E is a Fast Frequency Hopping Spread Spectrum Modulation (FHSS) that uses frequency hopping sequences in which ∼50 ms fragments are transmitted. Given the notorious adoption of LoRaWAN in the IoT application landscape, this article is a reference for understanding how exactly LoRa-E works, what performance it offers, and what its limitations are.
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