Year: 2025
Type: conference-paper
Abstract: This paper presents SFIxM, a flexible evolution of the LoRa modulation scheme designed to facilitate the allocation of transmission parameters across nodes within a gateway’s coverage area. SFIxM increases the number of available quasi-orthogonal channels and, unlike standard LoRa, offers tunable robustness to noise and interference. Because SFIxM introduces a new requirement for time-axis alignment between transmitter and receiver, we present a practical procedure to achieve this synchronisation, along with an analytical estimate of its failure probability, which we find negligible. Based on this foundation, we show that SFIxM provides traffic capacity gains of 40 to 55%, comparable to the gains obtained with receiver diversity, a well-known approach to improving coverage and range, which also turns out to combine well with SFIxM .
Institutions: Institut polytechnique de Grenoble, Centre National de la Recherche Scientifique, Laboratoire d'Informatique de Grenoble, Université Grenoble Alpes, Centre de Radiofréquences, Optique et Micro-nanoélectronique des Alpes, Université Savoie Mont Blanc, Institut national de recherche en sciences et technologies du numérique, Laboratoire d'Informatique, Signaux et Systèmes de Sophia Antipolis, COATI: Combinatoire, Optimisation et Algorithmes pour les Télécommunications
Language: English
Topic: IoT Networks and Protocols
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funder: Agence Nationale de la Recherche
OpenAlex ID: W4415025737
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