Semtech Corporation
Low-power, frequency-hopping, wide-area network with random medium access
Last updated:
Abstract:
A radio-transmitting device comprises a radio interface operating in a predetermined frequency band, operatively arranged for modulating a carrier having a frequency in the frequency band, while switching the frequency of the carrier among several hopping frequencies in the frequency band, according to a hopping sequence, to obtain a spread-spectrum modulated signal, wherein the spread-spectrum modulated signal includes, in a preamble portion, a plurality of sync words, each combined with at least one instance of a sequential index, the sync words being transmitted at different frequencies, and a data portion following the preamble portion and including a plurality of frequency hops.
Status:
Grant
Type:
Utility
Filling date:
11 Jun 2019
Issue date:
21 Jun 2022