公开(公告)号：US11916586B2

公开(公告)日：2024-02-27

申请号：US18122418

申请日：2023-03-16

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Mehdi Alijan

IPC: H04B1/40 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B1/40 ,  H04B7/0686 ,  H04B7/0868

Abstract: A method comprises capturing a first signal from a first radio chain, and dividing samples of the first signal into a first set of sub-vectors. A second signal is captured from a second radio chain. Samples of the second signal are divided into a second set of sub-vectors according to the determined mapping pattern. A gain difference and phase difference between each sub-vector of the first set and a sub-vector of the second set are estimated, acquiring gain differences and phase differences of the first signal and the second signal. The sub-vector level gain differences are combined to acquire a gain difference between the first signal and the second signal. The sub-vector-level phase differences are combined to acquire a phase difference between the first signal and the second signal. One of the first radio chain and the second radio chain are configured to reduce the gain difference and phase difference.

公开(公告)号：US11637609B2

公开(公告)日：2023-04-25

申请号：US17274337

申请日：2018-09-10

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Mehdi Alijan ,  Darrell Barabash

IPC: H04B7/06 ,  H01Q21/00 ,  H01Q21/06 ,  H04B1/04

Abstract: Systems, methods, apparatuses, and computer program products for array antenna adaptive digital pre-distortion with Bayesian observation analysis are provided. One method may include selecting a plurality of patch elements from an array antenna of a network element. The method may also include determining an accuracy confidence value for each patch element. A set of coefficients of the antenna array may be generated. In addition, an ensemble of non-linear forward models may be generated using the accuracy confidence value and the set of coefficients. Further, an array of pre-distortion signals may be generated using the ensemble of non-linear forward models, and each antenna of the array antenna may be configured with a corresponding pre-distortion signal from the array of pre-distortion signals.