The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2021
Filed:
Oct. 01, 2020
Huawei Technologies Co., Ltd., Shenzhen, CN;
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., Munich, DE;
Lorenzo Miretti, Berlin, DE;
Renato Luis Garrido Cavalcante, Berlin, DE;
Slawomir Stanczak, Berlin, DE;
Qing Liu, Munich, DE;
Huawei Technologies Co., Ltd., Shenzhen, CN;
FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V., Munich, DE;
Abstract
The present disclosure provides a device, a base station device, and a method for obtaining an estimate of a downlink (DL) covariance matrix from an uplink (UL) covariance matrix. The device and method are particularly suitable for massive Multiple Input Multiple Output (MIMO) scenarios, and are particularly applicable to Frequency-Division Duplexing (FDD) systems. The device includes a processor configured to compute an angular power spectrum (APS) of an antenna array, in particular in the continuous angular domain, based on the UL covariance matrix of a communication channel and an UL response of the antenna array. Further, the processor is configured to compute the DL covariance matrix of the communication channel based on the APS and a DL response of the antenna array. The base station device includes the device and the antenna array.