Invention Grant
- Patent Title: Method and system for crest factor reduction
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Application No.: US15646773Application Date: 2017-07-11
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Publication No.: US10084494B2Publication Date: 2018-09-25
- Inventor: Ramesh Sridhar , Timothy Gallagher , Shantha Murthy Prem Swaroop , Ali Shahed hagh ghadam
- Applicant: Maxlinear, Inc.
- Applicant Address: US CA Carlsbad
- Assignee: Maxlinear, Inc.
- Current Assignee: Maxlinear, Inc.
- Current Assignee Address: US CA Carlsbad
- Agency: McAndrews, Held & Mall
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04B1/04 ; H03F3/213 ; H03F3/24 ; H03F3/195 ; H03F1/32 ; H03G3/30

Abstract:
Methods and systems for crest factor reduction may comprise generating an original waveform, generating a distortion signal by reducing a crest factor of the original waveform, generating an error signal by subtracting out the original waveform from the distortion signal, and generating a conditioned waveform by adding the error signal to the original waveform. The crest factor of the original waveform may be reduced based on spectral mask requirements. The crest factor of the original waveform may be reduced using a limiter. The power amplifier may comprise a programmable gain amplifier (PGA). The distortion signal may be generated based on a PGA model and/or a predistortion model. A signal from an output of the PA may be fed back to the PGA model. The PGA model may be dynamically configured. The crest factor of the original waveform may be reduced in an analog domain and/or a digital domain.
Public/Granted literature
- US20170310347A1 Method And System For Crest Factor Reduction Public/Granted day:2017-10-26
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