A New Index Modulation for LoRa

Jae‐Mo Kang

doi:10.1109/JIOT.2023.3240521

2023-07-01

Jae‐Mo Kang *

DOI：10.1109/JIOT.2023.3240521

原文链接

摘要

En 中文

Long range (LoRa) is a widely adopted Internet of Things (IoT) technique, but its fatal limit is a low-data rate. In this letter, we propose a new index modulation for LoRa to increase the data rate, in which multiple quasi-orthogonal chirps modulated under different spreading factors (SFs) are concurrently transmitted, thereby leveraging the SF domain as a means to carry more information. Both the coherent and noncoherent detection algorithms for the proposed index modulation are also developed in efficient forms. Numerical results demonstrate that the proposed scheme notably outperforms the state-of-the-art techniques.

Keyword:

Chirp

Modulation

Indexes

Signal to noise ratio

Detection algorithms

Symbols

Sensitivity

Chirp spread spectrum

index modulation

Internet of Things (IoT)

long-range (LoRa)