PATENT CLAIM ANALYSIS

Application Number: 16307059
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["375", "139000"]

Abstract:
A method for demodulating a received signal resulting from the modulation of a basic chirp signal including estimating of a symbol carried by the received signal, implementing the following sub-steps: determining N decision components from the received signal and from a reference chirp signal obtained by modulating the basic chirp signal by a reference symbol corresponding to a symbol of rank r, a decision component of index l, denoted as a component D l , being a function of a term, the phase of which depends quadratically on l, with l being an integer from 0 to N−1; and deciding the rank {circumflex over (k)} of the symbol carried by the received signal, from the decision component, of index k, denoted as a component D k , having an extremum value among the N decision components,

Claim (Index 7):
The method according to  claim 6 , said estimated channel coefficients forming a vector H _ ^ = [ H ^ 0 H ^ 1 \u22ee H ^ N - 1 ] , said estimation of said coefficients being done on the basis of Ns received symbols, k i  designating the rank of the i-th of said Ns symbols in the constellation of N symbols, r i  designating the rank of a reference symbol used during the reception of said i-th symbol, Y l (i)  designating N samples of said transformed signal obtained during the reception of said i-th symbol\n wherein said vector  \u0124  is expressed as \n H _ ^ = 1 N s \ue89e \u2211 i = 0 N s - 1 \ue89e Y _ \u2032 \ue8a0 ( i ) with Y _ \u2032 \ue8a0 ( i ) = 1 N \ue89e S k i - r i \ue8a0 [ N ] * \ue8a0 [ e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( 0 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 0 N \ue89e Y 0 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( 1 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 1 N \ue89e Y 1 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) \u22ee e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( N - 1 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 ( N - 1 ) N \ue89e Y N - 1 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) ] when said Fourier transformation corresponds to a forward Fourier transform and when said conjugate chirp signal corresponds to the conjugation of said reference chirp signal; or Y _ \u2032 \ue8a0 ( i ) = S k i - r i \ue8a0 [ N ] * \ue8a0 [ e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - 0 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 0 N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - 0 \ue8a0 [ N ] ( i ) e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - 1 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 1 N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - 1 \ue8a0 [ N ] ( i ) \u22ee e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - N + 1 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 ( N - 1 ) N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - N + 1 \ue8a0 [ N ] ( i ) ] when said Fourier transformation corresponds to an inverse Fourier transform and when said conjugate chirp signal corresponds to the conjugation of said reference chirp signal; or Y _ \u2032 \ue8a0 ( i ) = 1 N \ue89e S k i - r i \ue8a0 [ N ] * \ue8a0 [ e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - 0 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 0 N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - 0 \ue8a0 [ N ] ( i ) * e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - 1 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 1 N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - 1 \ue8a0 [ N ] ( i ) * \u22ee e - 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( \u03c3 i \ue8a0 ( k i - r i ) - N + 1 ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 ( N - 1 ) N \ue89e Y \u03c3 i \ue8a0 ( k i - r i ) - N + 1 \ue8a0 [ N ] ( i ) * ] when said Fourier transformation corresponds to a forward Fourier transform and when said conjugate chirp signal corresponds to the conjugation of said received signal; or Y _ \u2032 \ue8a0 ( i ) = S k i - r i \ue8a0 [ N ] * \ue8a0 [ e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( 0 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 0 N \ue89e Y 0 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) * e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( 1 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 1 N \ue89e Y 1 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) \u22ee e + 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e \ue89e r i \ue8a0 ( N - 1 - \u03c3 i \ue8a0 ( k i - r i ) ) N \ue89e e 2 \ue89e j \ue89e \ue89e \u03c0 \ue89e ( k i - r i ) \u00b7 ( N - 1 ) N \ue89e Y N - 1 - \u03c3 i \ue8a0 ( k i - r i ) \ue8a0 [ N ] ( i ) * ] lorsque said Fourier transformation corresponds to an inverse Fourier transform and when said conjugation chirp signal corresponds to the conjugation of said received signal;\n with \n S k = ( - 1 ) k \ue89e e j \ue89e \ue89e \u03c0 \ue89e \ue89e \u03c3 \ue89e \ue89e k 2 N and with \u03c3 being a parameter belonging to {\u22121,1}.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 98.0
- Lexical Diversity: 2.22059
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['11992047', '13574773', '13576814', '15295349', '11665311']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.479663987168702
- 35 USC 102 Novelty (BERT): 0.5098680581320223
- Combined Prediction Score: 0.482684394265034
- Mean Citation Score: 250.290662
- Max Citation Score: 263.57712000000004
- Similarity Product: 193.8733457900048

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test