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

US10812158B2 · 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 · Erlangen, DE

Key dates

• Filing date: Jul 23, 2019
• Grant date: Oct 20, 2020
• Expiry date: Jul 23, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B7/0619
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

Described herein are techniques where a transmitter for an entity of a wireless communication system, like a user equipment or a base station of a mobile communication network, is controlled by a codebook that has been established for a specific antenna array that is different from the transmitter's antenna array. The transmitter's antenna array may be an antenna array having an arbitrary configuration, e.g. the transmitter's antenna array may include a 1-, 2- or 3-dimensional antenna array of any array configuration. The specific codebook, e.g., a 2-dimensional discrete Fourier transform, 2D DFT, based codebook, is adapted to the actual or real antenna array of the transmitter by one or more characteristic matrices describing the configuration or nature of the transmitter's antenna array, thereby adapting the codebook, which has been established for the specific antenna array, for controlling the transmitter's antenna array so as to obtain a desired directional beam patterns.