PATENT CLAIM ANALYSIS

Application Number: 15910648
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-11
Patent Classification: ["375", "297000"]

Abstract:
A remote radio head unit (RRU) system is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier inside the RRU. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by a wideband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, embodiments of the present invention can compensate for the nonlinearities as well as memory effects of the power amplifier systems and also improve performance, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers, multi-frequency bands and multi-channels. Consequentially, the remote radio head system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems.

Claim (Index 17):
A method comprising:\n receiving an input signal; predistorting the input signal by digital predistortion logic; amplifying the predistorted input signal by a power amplifier to obtain an amplified output signal; obtaining a feedback signal including in-band distortions and out-of-band distortions of the amplified output signal; determining dynamic parameters of the digital predistortion logic in response to the out-of-band distortions.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 90.0
- Lexical Diversity: 1.74737
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14335647', '14703579', '14020425', '12928943', '14337004']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.509922763974697
- 35 USC 102 Novelty (BERT): 0.5422406310745534
- Combined Prediction Score: 0.5131545506846827
- Mean Citation Score: 343.679184
- Max Citation Score: 372.68176
- Similarity Product: 311.84285129430765

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

Dataset: test