PATENT CLAIM ANALYSIS

Application Number: 15916607
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["398", "208000"]

Abstract:
Pilot-aided digital coherent reception of high-order QAM signal detection using a continuous short pilot preamble and subsequent pilot symbols that are periodically distributed with payload data resulting in low-complexity and fast-convergence signal detection for continuous mode coherent reception of high-order QAM signals. A digital signal processor is configured to demodulate a transmitted data stream from digital stream of measurements of light mixtures produced in a receiver for coherent optical communications in response to receiving modulated optical carriers. The digital signal processor includes one circuit stage for providing corrections to the digital stream to compensate first effects on the light mixtures due to a frequency shift of a local optical oscillator of the receiver and another circuit stage for correcting the digital stream to compensate for second effects on the light mixtures due to polarization dependent channel modification of the modulated optical carriers.

Claim (Index 18):
The apparatus of  claim 1 , wherein the predefined optical pilot symbols comprise:\n one or more pilot preamble symbol sequences; and a plurality of individual pilot symbols distributed with payload data in one or more data frames.

Metadata:
- Claim Count in Document: 18.0
- Percentile: 90.0
- Lexical Diversity: 1.88312
- Patent Class: 398.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15612385', '12642762', '13270804', '15525670', '13041384']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7009238853013314
- 35 USC 102 Novelty (BERT): 0.5141322253380576
- Combined Prediction Score: 0.6822447193050041
- Mean Citation Score: 219.111004
- Max Citation Score: 231.6445
- Similarity Product: 163.40771652281285

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