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In digital communications, chirp spread spectrum (CSS) is a spread spectrum technique that uses wideband linear frequency modulated chirp pulses to encode information. A chirp is a sinusoidal signal whose frequency increases or decreases over time (often with a polynomial expression for the relationship between time and frequency).
Artículo principal: Frecuencia modulada pulsada. Se trata de una técnica de modulación en espectro ensanchado menos común que las anteriores, en la que se emplea un pulso que barre todas las frecuencias, llamado chirp, para expandir la señal espectral.
Alireza Maleki, Ha H. Nguyen, Ebrahim Bedeer, and Robert Barton. Abstract—Chirps spread spectrum (CSS) modulation is the heart of long-range (LoRa) modulation used in the context of long-range wide area network (LoRaWAN) in internet of things (IoT) scenarios.
Learn more about Chirp Spread Spectrum (CSS) and how this flexible radio-frequency technology offers a unique performance mix of accuracy, range, and reliability to create unparalleled indoor positioning and asset tracking — especially in industrial-grade environments.
21 de mar. de 2023 · CSS is a spread spectrum modulation technique that uses a chirp signal to spread the data signal over a wide frequency range. It offers several advantages over other spread spectrum techniques, including low power consumption, high resistance to interference, and high bandwidth efficiency.
Chirp spread spectrum as a modulation technique for long range communication Abstract: Long range low power is a family of technologies promising to connect thousands of sensors to the future internet of things.
16 de oct. de 2023 · [Submitted on 16 Oct 2023] A Tutorial on Chirp Spread Spectrum for LoRaWAN: Basics and Key Advances. Alireza Maleki, Ha H. Nguyen, Ebrahim Bedeer, Robert Barton. Chirps spread spectrum (CSS) modulation is the heart of long-range (LoRa) modulation used in the context of long-range wide area network (LoRaWAN) in internet of things (IoT) scenarios.
