PATENT CLAIM ANALYSIS

Application Number: 15862499
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-08
Patent Classification: ["370", "330000"]

Abstract:
Fiber, cable, and wireless data channels are typically impaired by reflectors and other imperfections, producing a channel state with echoes and frequency shifts in data waveforms. Here, methods of using OTFS pilot symbol waveform bursts to automatically produce a detailed 2D model of the channel state are presented. This 2D channel state can then be used to optimize data transmission. For wireless data channels, an even more detailed 2D model of channel state can be produced by using polarization and multiple antennas in the process. Once 2D channel states are known, the system turns imperfect data channels from a liability to an advantage by using channel imperfections to boost data transmission rates. The methods can be used to improve legacy data transmission modes in multiple types of media, and are particularly useful for producing new types of robust and high capacity wireless communications using non-legacy OTFS data transmission methods.

Claim (Index 28):
A method for determining a two-dimensional (2D) channel state of an impaired data channel connecting at least one transmitter and at least one receiver, the impaired data channel comprising at least one reflector, the at least one reflector comprising a reflector location, a reflector frequency shift and at least one coefficient of reflection, the method comprising:\n receiving channel-convoluted OTFS pilot bursts using a 2D pilot OTFS time-frequency bin structure with bin sizes and bin-coordinate positions proportional to an OTFS time-frequency grid; and determining the 2D channel state of the impaired data channel based on the channel-convoluted OTFS pilot bursts, wherein the channel-convoluted OTFS pilot bursts comprise a combination of direct OTFS pilot bursts and replica OTFS pilot bursts, wherein the direct OTFS pilot bursts comprise a plurality of OTFS pilot symbols P pt,pf , wherein the plurality of OTFS pilot symbols are transmitted as OTFS pilot symbol waveform bursts P pt,pf \u00b7W p (pt, pf) over a plurality of combinations of times pt and frequencies pf, where each of the times pt and the frequencies pf are unique pilot time-frequency coordinates chosen from the OTFS time-frequency grid, wherein the OTFS pilot symbol waveform bursts P pt,pf \u00b7W p (pt, pf) are mutually orthogonal waveform bursts derived from cyclically time and frequency shifted versions of a common OTFS pilot basis waveform W p , wherein the direct OTFS pilot bursts travel directly from the at least one transmitter to the at least one receiver, and wherein the replica OTFS pilot bursts comprise direct OTFS pilot bursts that have reflected off the at least one reflector before reaching the at least one receiver, thereby producing direct OTFS waveform bursts that are further reflector time-delayed and reflector frequency-shifted at the at least one receiver.

Metadata:
- Claim Count in Document: 56.0
- Percentile: 86.0
- Lexical Diversity: 1.92857
- Patent Class: 370.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14805407', '14583911', '15263103', '15604072', '15573793']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.672090749026229
- 35 USC 102 Novelty (BERT): 0.6378244123311254
- Combined Prediction Score: 0.6686641153567187
- Mean Citation Score: 627.0977379999998
- Max Citation Score: 650.1668
- Similarity Product: 557.0833886384726

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