Digital pre-distorter training

US11502708B2 · kind B2 · utility

Assignee

• QUALCOMM Incorporated · US

Inventors

• Igor Gutman · Ramat Gan, IL
• Yehezkel Hadid · Kfar Sava, IL
• Carl HARDIN · Encinitas, US
• Sang-June Park · San Diego, US
• Mendel Aizner · Nesher, IL
• Gideon Shlomo Kutz · Ramat HaSharon, IL

Key dates

• Filing date: Apr 14, 2021
• Grant date: Nov 15, 2022
• Expiry date: Apr 14, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L25/03343
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

Certain aspects of the present disclosure provide techniques for training a digital pre-distorter (DPD) using real-time over-the-air transmissions and receptions by a user equipment (UE). A method for training the DPD generally includes transmitting a signal, generated by a transmitter front end, via a first port; sampling the signal, received over the air, at a second port; performing signal processing cleaning (e.g., synchronization, linear over-the-air channel estimation and equalization); calculating coefficients for a DPD; and configuring the DPD with the coefficients, for use in digitally pre-distorting sub sequent transmissions.