Method for processing of passive intermodulation products

US11575401B2 · kind B2 · utility

Assignee

• NOKIA SOLUTIONS AND NETWORKS OY · FI

Inventors

• Marko Fleischer · Unterhaching, DE
• Jan Hellmann · Munich, DE
• Rene RÖSCHKE · Fürstenfeldbruck, DE
• Björn Jelonnek · Ulm, DE
• Jürgen Hellstab · Neu-Ulm, DE

Key dates

• Filing date: Sep 28, 2021
• Grant date: Feb 7, 2023
• Expiry date: Sep 28, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B1/525
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An apparatus includes an estimation circuitry configured to receive a first set of one or more digital signals of transmitters of a communication system, and capture a set of one or more radio frequency signals that have been generated from the first set of digital signals The set of radio frequency signals being input of an antenna system of the communication system. Based on the first set of digital signals and the corresponding set of radio frequency signals, a set of weights related to a distortion effect caused by the generation of the radio frequency signals is derived. A received second set of digital signals is weighted using the set of weights, resulting in filtered signals. Using the filtered signals, a correction signal indicative of an interference caused by transmission of the second set of digital signals at a receiver of the communication system is estimated.