Antenna array codebook with beamforming coefficients adapted to an arbitrary antenna response of the antenna array

US11539409B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Venkatesh Ramireddy · Erlangen, DE
• Markus Landmann · Erlangen, DE
• Marcus GROßMANN · Friedrichroda, DE

Key dates

• Filing date: Dec 22, 2020
• Grant date: Dec 27, 2022
• Expiry date: Mar 10, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/0639
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A receiver includes an antenna for a wireless communication with a transmitter and a signal processor to process a radio signal received via a radio channel. The receiver constructs a codebook including sets of beamforming weights for a plurality of directions. The beamforming weights are based on a first antenna array response matrix of a transmitter antenna array. The transmitter selects beamforming weights from the codebook to form a transmit/receive beam pointing in a selected direction. The receiver calculates one or more characteristic matrices based on a model of the transmitter antenna array, and constructs the codebook using a second antenna array response matrix and the one or more calculated characteristic matrices.