PATENT CLAIM ANALYSIS

Application Number: 15779059
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["375", "295000"]

Abstract:
A method and system for demodulating high-order Quadrature Amplitude Modulation (QAM) signals is disclosed. In one embodiment, the system includes a cyclic prefix (CP) removal unit for removing a CP from a received signal to provide a first intermediate signal, wherein the first intermediate signal comprises a plurality of bits; a fast Fourier transform (FFT) unit configured to convert the first intermediate signal into a frequency domain; a soft de-mapper configured to derive a plurality of soft bits based on log-likelihood estimates of the plurality of bits, wherein the soft de-mapper derives each soft bit by using a single linear function to approximate each soft bit; and a decoder configured to decode a signal derived from the soft de-mapper into information.

Claim (Index 19):
The non-transitory computer-readable medium of  claim 18  wherein the single linear function for soft bits c 0 , c 1 , c 2  and c 3  are provided as follows:\n \u03bb( c 0 )= Z r ; LLR( c 0 )=| H k | 2  Z r  \n \u03bb(c 1 )\u2248\u2212|Z r |+8A; \n \u03bb(c 2 )\u2248\u2212\u2225Z r |\u22128A|+4A; \n \u03bb(c 3 )\u2248\u2212|\u2225Z r |\u22128A|\u22124A|+2A; \n LLR( c i )=| H k | 2  \u03bb( c i );  i= 1,2,3 \n wherein Zr is the real part of Z(k), wherein Z(k) =Y(k)/H(k), Y(k) is the k th  sample of a received OFDM symbol, H(k) is the channel frequency response (CFR) at the k th  subcarrier, A is a constellation normalization factor, and LLR is a log likelihood ratio indicative of a confidence level of each respective soft bit c 0 , c 1 , c 2  and c 3 .

Metadata:
- Claim Count in Document: 34.0
- Percentile: 93.0
- Lexical Diversity: 1.875
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['11594991', '12929434', '13644574', '11471187', '12096119']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5088831426771057
- 35 USC 102 Novelty (BERT): 0.5130533488463056
- Combined Prediction Score: 0.5093001632940256
- Mean Citation Score: 209.344044
- Max Citation Score: 234.9728
- Similarity Product: 132.56821867752078

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

Dataset: test