公开(公告)号：US20230208486A1

公开(公告)日：2023-06-29

申请号：US18000164

申请日：2021-04-12

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Linglong DAI ,  Ruochen SU ,  Jingbo TAN ,  Mo HAO ,  Richard MACKENZIE

IPC: H04B7/06 ,  H04B7/0456 ,  H04B7/145

CPC classification number: H04B7/0617 ,  H04B7/0456 ,  H04B7/0626 ,  H04B7/145

Abstract: A reflective surface for directing wireless communications signals that includes a plurality of independently reconfigurable elements disposed irregularly on the surface is disclosed. A method of controlling a communication channel of a wireless communication system that includes the reflective surface having an irregular element arrangement is also disclosed.

公开(公告)号：US20220190899A1

公开(公告)日：2022-06-16

申请号：US17310839

申请日：2020-01-23

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Linglong DAI ,  Jingbo TAN ,  Bichai WANG ,  Richard MACKENZIE ,  Mo HAO

IPC: H04B7/06 ,  H04B7/0417 ,  H04L25/02 ,  H04B7/0456

Abstract: A method of performing channel estimation in a multiple-input-multiple-output (MIMO) communication system comprising a downlink device and an uplink device arranged to communicate over a communication channel, the method including at the uplink device: analyzing a first channel vector representing channel gains between the downlink device and a first antenna of the uplink device in the angular domain to identify a set of angular domain support points; generating from the set of angular domain support points a value vector; and feeding back from the uplink device to the downlink device an indication of the value vector; and at the downlink device: analyzing a second channel vector representing channel gains between the downlink device and a second antenna of the uplink device; generating a transmit steering matrix; and generating an estimate of the first channel vector.