Method, computer-readable storage medium and apparatus for demodulating a received signal

A technology for receiving signals and FM signals, applied in FM carrier systems, modulated carrier systems, digital transmission systems, etc., can solve the problems of receivers that are unfavorable to the autonomy of interconnected things, and achieve the effect of improving the receiving performance value

Active Publication Date: 2021-01-19
B COM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] It is also required that this improvement should not lead to excessive energy consumption of the receiver and thus should not be detrimental to the autonomy of connected things that embed such a receiver

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  • Method, computer-readable storage medium and apparatus for demodulating a received signal
  • Method, computer-readable storage medium and apparatus for demodulating a received signal
  • Method, computer-readable storage medium and apparatus for demodulating a received signal

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Embodiment Construction

[0081] In all the drawings of this document, the same elements and steps are designated by the same reference numerals.

[0082] The general principle of the invention relies on estimating symbols from a received signal representing N decision components of a symbol in a constellation of N symbols corresponding to a modulated chirp signal transmitted in a transmission channel.

[0083] To this end, the I-th component among the N decision components is a function of I through complex terms, and its argument varies quadratically as a function of I. Indicates the index of the received symbol in the constellation of N symbols Then, it is determined according to the index k of the decision component showing an extremum value among the N decision components.

[0084] The proposed solution makes it possible in particular to demodulate signals generated using the technique described in the aforementioned patent EP 2 449 690 B1.

[0085] As already indicated, this patent EP 2 449 69...

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Abstract

A method for demodulating a received signal resulting from modulation of a substantially chirped signal, comprising a step (E46) of estimating symbols carried by said received signal, said step implementing the following sub-steps: from said receiving a signal and determining (E43) N decision components from a reference chirp signal obtained by modulating said basic chirp signal by reference symbols corresponding to symbols of rank r, having indices I, Expressed as component D l The decision component of is a function of a term whose phase depends quadratically on I, where I is an integer from 0 to N‑1; k , the decision component having an extremum value among the N decision components decides (E44) the rank of the symbol carried by the received signal

Description

technical field [0001] The field of the invention is based on the The modulation of a waveform known as "chirp" used in the technology transmits data over a radio frequency link. [0002] More specifically, the invention relates to a method for demodulating such waveforms with improved performance over the prior art and comparable implementation complexity. [0003] because Technology is dedicated to low power transmission by connected things, so the invention has applications in all areas where connected things exist in personal and professional life, especially but not exclusively in health, sports, home applications ( Security, electronics and appliances, etc.), tracking things and other fields. Background technique [0004] Connected things that exist as the "third Internet revolution" are now becoming more and more common in all areas of everyday life and corporate life. Most of these things are designed to generate data through their integrated sensors in order t...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04L27/14H04L27/10
CPCH04B1/69H04B1/717H04B2001/6912H04L27/103H04L27/14
Inventor斯特凡·帕克莱帕特里克·萨韦利
OwnerB COM