公开(公告)号：US20230353426A1

公开(公告)日：2023-11-02

申请号：US17923138

申请日：2021-05-10

Applicant: Nokia Technologies Oy

Inventor： Yejian CHEN ,  Stefan WESEMANN ,  Jafar MOHAMMADI ,  Thorsten WILD

IPC: H04L25/02

CPC classification number: H04L25/0254 ,  H04L25/0212

Abstract: A method of channel estimation for an antenna array is disclosed. The method includes, receiving a signal transmitted by the antenna array, obtaining a neural network model trained for channel estimation using the received signal, inputting a representation of the received signal into the neural network model and generating a channel estimate for the received signal, and deciding whether to employ a further neural network model for the channel estimation.

公开(公告)号：US20180335501A1

公开(公告)日：2018-11-22

申请号：US15600024

申请日：2017-05-19

Applicant: Nokia Technologies OY

Inventor： Yejian CHEN

IPC: G01S5/00

CPC classification number: H04W64/00

Abstract: Localization of the mobile device uses a non-orthogonal multiple access (NOMA) scheme involving base stations, where localization is accomplished by sending a positioning request to the base stations, and receiving base station coordinate information and direction of arrival (DoA) information from the base stations. Distance information is computed based on the base station coordinate information. A location of the mobile device is determined based on the DoA information and the distance information.

公开(公告)号：US20230125699A1

公开(公告)日：2023-04-27

申请号：US17908726

申请日：2020-03-06

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Yejian CHEN ,  Stefan WESEMANN ,  Thorsten WILD ,  Jafar MOHAMMADI

IPC: H04L25/02

Abstract: It is provided a method, comprising identifying a value of an onsite channel characteristic of a receive channel; requesting a neural network parameter, wherein the request comprises an indication of the onsite channel characteristic; monitoring if the neural network parameter is received in response to the request; estimating the receive channel by a neural network using the neural network parameter if the neural network parameter is received.