Scalable digital predistortion system

Patent metadata

Field	Value
Publication number	US-9214969-B2
Application number	US-201414522508-A
Country	US
Kind code	B2
Filing date	Oct 23, 2014
Priority date	May 9, 2013
Publication date	Dec 15, 2015
Grant date	Dec 15, 2015

Abstract

The scalable digital predistortion system and method provides compensation for the nonlinear distortions of power amplifiers and transmitters. The scalable digital predistortion system and its associated update algorithms provide scalability in terms of signal bandwidth and average power, allowing for low complexity updates following changes in the signal's bandwidth and/or power level. The method applies both memory polynomial functions and memoryless predistortion functions for compensating for the nonlinear distortions.

First claim

I claim:

1. A scalable digital predistortion method for linearizing a power amplifier, comprising the steps of:
establishing a memoryless look-up table bank stored in computer readable memory, the memoryless look-up table bank having a set of memoryless predistortion functions stored therein indexed by average power values;
storing memory polynomial size parameters indexed by bandwidth in the computer readable memory, the size parameters including nonlinearity order and memory d…

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Hammi Oualid

Classifications

• H04B2001/0425

  Electricity · mapped topic

• H03F1/3241

  Electricity · mapped topic

• H03F1/3247

  Electricity · mapped topic

• H03F1/02

  Electricity · mapped topic

• H03F2201/3233

  Electricity · mapped topic