PATENT CLAIM ANALYSIS

Application Number: 16057822
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2020-02
Patent Classification: ["null", "null"]

Abstract:
Techniques are described for crest factor reduction in power amplifier circuits. For example, crest factor reduction can keep the peak signal level of a signal for transmission to below a peak threshold level associated with a power amplifier in the transmission path. The signal is received by the crest factor reduction system and clipped in accordance with the peak threshold level. Edge smoothing is then applied to the clipped signal to reduce out-of-band emissions. The edge smoothing is implemented by a moving average filter, such as a time-domain box filter. In some embodiments, a maximum operation or minimum operation is used to prevent signal peak regrowth after the filtering. Some embodiments also include various iteration loops to further improve crest factor reduction.

Claim (Index 18):
A transmitter system comprising:\n a power amplifier to generate a transmission signal for transmission over a data channel as a function of applying gain to an output data signal, the power amplifier having an associated threshold peak level; and a crest factor reduction (CFR) system coupled with the power amplifier to generate the output data signal as a crest factor-reduced version of a received input data signal in accordance with the threshold peak level, the CFR system comprising: means for clipping the input data signal with respect to the threshold peak level to generate a clipped portion of the input data signal; means for edge-smoothing the clipped portion of the input data signal by computing a moving average of the clipped portion of the input data signal over a moving time window and computing a filter output signal as a maximum of the moving average with respect to the clipped portion of the input data signal; and means for generating the output data signal as a function of subtracting the filter output signal from the input data signal, a signal corresponding to the average of the clipped portion of the input data signal.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 96.0
- Lexical Diversity: 1.78378
- Patent Class: nan
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15391183', '12245047', '13687576', '15514855', '12567509']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5707357710335124
- 35 USC 102 Novelty (BERT): 0.4863842101449941
- Combined Prediction Score: 0.5623006149446605
- Mean Citation Score: 239.276928
- Max Citation Score: 259.64227
- Similarity Product: 205.3900994456971

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