Patent · US Active

Polyphase digital signal predistortion in radio transmitter

US11476809B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

NOKIA SOLUTIONS AND NETWORKS OY · FI

Inventors

Michael Weber · Neu-Ulm, DE
Bjoern Jelonnek · Ulm, DE
Jan Hellmann · Munich, DE

Key dates

Filing date	Aug 11, 2017
Grant date	Oct 18, 2022
Priority date	—
Expiry date	Aug 11, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH04B2001/0408
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A method comprises obtaining a transmission signal to be power-amplified in a power amplifier (361) prior to transmission; separating the transmission signal into two or more polyphase components of the transmission signal; feeding one or more polyphase components of the transmission signal comprised in the two or more polyphase components to each of two or more parallel predistortion circuits (320,321,322); selecting a dedicated predistortion model and dedicated predistortion coefficients for each of the two or more parallel predistortion circuits (320,321,322); performing non-linear memory-based modeling on the transmission signal according to the selected dedicated predistortion models and coefficients using the one or more polyphase components; and combining output signals of the two or more parallel predistortion circuits (320,321,322) to form a predistorted transmission signal (y[n]) to be applied to the power amplifier (361).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.