PATENT CLAIM ANALYSIS

Application Number: 16171224
Application Type: Utility
Filing Date: 2018-10
Publication Date: 2019-02
Patent Classification: ["375", "260000"]

Abstract:
Systems and methods for decoding block and concatenated codes are provided. These include advanced iterative decoding techniques based on belief propagation algorithms, with particular advantages when applied to codes having higher density parity check matrices such as iterative soft-input soft-output and list decoding of convolutional codes, Reed-Solomon codes and BCH codes. Improvements are also provided for performing channel state information estimation including the use of optimum filter lengths based on channel selectivity and adaptive decision-directed channel estimation. These improvements enhance the performance of various communication systems and consumer electronics. Particular improvements are also provided for decoding HD radio signals, satellite radio signals, digital audio broadcasting (DAB) signals, digital audio broadcasting plus (DAB+) signals, digital video broadcasting-handheld (DVB-H) signals, digital video broadcasting-terrestrial (DVB-T) signals, world space system signals, terrestrial-digital multimedia broadcasting (T-DMB) signals, and China mobile multimedia broadcasting (CMMB) signals. These and other improvements enhance the decoding of different digital signals.

Claim (Index 4):
A method for modifying variable-to-check messages during an iteration in decoding of codes represented by a parity check matrix, the method comprising the following steps for at least one variable node:\n a. calculating variable-to-check messages Mvc(i,j) (n-1)  and Mvc(i,j) (n)  from variable node j to check node i, respectively, in iterations (n\u22121) and (n), where n>2; b. comparing the positive or negative signs of variable-to-check messages Mvc(i,j) (n-1)  and Mvc(i,j) (n)  calculated in step a; and c. if said signs in step b) are different, generate modified variable-to-check message {acute over (M)}vc(i,j) (n)  according to {acute over (M)}vc(i,j) (n) =g\u00b7Mvc(i,j) (n) +(1\u2212g)\u00b7Mvc(ij) (n-1) , where 0.5<g\u22641.

Metadata:
- Claim Count in Document: 53.0
- Percentile: 97.0
- Lexical Diversity: 1.85417
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15236066', '14942570', '13693023', '14825557', '14825531']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6914952770085941
- 35 USC 102 Novelty (BERT): 0.655536892188363
- Combined Prediction Score: 0.6878994385265711
- Mean Citation Score: 689.257146
- Max Citation Score: 721.49854
- Similarity Product: 609.8595499030757

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

Dataset: test