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公开(公告)号：US20160020932A1
公开(公告)日：2016-01-21
申请号：US14755602
申请日：2015-06-30
Applicant: Semtech Corporation
Inventor： Nicolas Sornin , Ludovic Champion
CPC classification number: H04L27/103 , H04B1/69 , H04B2001/6912 , H04L27/14 , H04W88/16
Abstract: A gateway device having a baseband processor for processing a plurality signals carrying a digital information modulated in the form of chirp signal, the chirp signals being either base chirps, for which the frequency changes from an initial instant to a final instant according to a predetermined base chirp function or modulated chirps, whose instantaneous frequencies vary according to one of a plurality of a functions that differ from said base chirp function, characterized in that the gateway device is arranged for simultaneously demodulating a plurality of signals having received at a same frequency and exhibiting different bitrates.
Abstract translation: 一种网关设备，具有用于处理承载以啁啾信号形式调制的数字信息的多个信号的基带处理器，所述啁啾信号是基本啁啾，根据预定基准，频率从初始瞬间变为最终时刻 啁啾函数或调制啁啾，其瞬时频率根据与所述基本啁啾功能不同的多个功能中的一个而变化，其特征在于，所述网关设备被布置成用于同时解调以相同频率接收的多个信号， 不同的比特率
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公开(公告)号：US09794095B2
公开(公告)日：2017-10-17
申请号：US14755602
申请日：2015-06-30
Applicant: Semtech Corporation
Inventor： Nicolas Sornin , Ludovic Champion
CPC classification number: H04L27/103 , H04B1/69 , H04B2001/6912 , H04L27/14 , H04W88/16
Abstract: A gateway device having a baseband processor for processing a plurality signals carrying a digital information modulated in the form of chirp signal, the chirp signals being either base chirps, for which the frequency changes from an initial instant to a final instant according to a predetermined base chirp function or modulated chirps, whose instantaneous frequencies vary according to one of a plurality of a functions that differ from said base chirp function, characterized in that the gateway device is arranged for simultaneously demodulating a plurality of signals having received at a same frequency and exhibiting different bitrates.
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公开(公告)号：US10425362B2
公开(公告)日：2019-09-24
申请号：US15594227
申请日：2017-05-12
Applicant: Semtech Corporation
Inventor： Ludovic Champion , Olivier Bernard André Seller
IPC: H04L12/939 , H04L5/00 , H04L29/06 , H04B1/69 , H04L1/02 , H04L1/00 , H04W4/70 , H04L27/10 , H04L27/00
Abstract: A wireless communication system, comprising one or several nodes (A) equipped by a wireless radio interface that is adapted for transmitting digital messages modulated in the form of a series of frequency chirps, for example, LoRa-modulated radio signals. The message is received simultaneously by several base stations (C, D, E), and a server (S) is arranged for dividing the frames by the diverse stations and recombining a corrected frame for the intended recipient (B) based on error codes. Advantageously, the base stations being adapt their timing error compensation strategy when the error codes indicate a corruption of the message.
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