Huawei Technologies Co., Limited

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Lorenzo Miretti

Qing Wen Liu

Slawomir Stanczak

Renato Luis Garrido Cavalcante

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.

Growing community of inventors

Berlin, Germany

Lorenzo Miretti