公开(公告)号：US12199707B2

公开(公告)日：2025-01-14

申请号：US18093368

申请日：2023-01-05

Applicant: Nokia Solutions and Networks Oy

Inventor： Karthik Upadhya

IPC: H04B7/0456 ,  H01Q21/06 ,  H01Q23/00

Abstract: Antenna arrays to be used in MIMO apparatuses are disclosed. Such an antenna array may include a plurality of array elements, wherein every second element in a first direction is a digital pre-distortion-less linear element, and every second element in the first direction is a non-linear element. In the antenna array, spacing between adjacent elements in the first direction is less than a half of a free space wavelength. A non-linear precoding is applied to transmissions from the antenna array, the non-linear precoding converting out-of-band emissions of the transmissions into reactive power in the near-field around the antenna array while ensuring that in-band signals generated by the elements remain unaffected.

公开(公告)号：US11800458B2

公开(公告)日：2023-10-24

申请号：US18073847

申请日：2022-12-02

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Dani Johannes Korpi ,  Martti Johannes Moisio ,  Karri Lindeman ,  Mikko Aleksi Uusitalo ,  Karthik Upadhya

IPC: H04W52/22 ,  H04W52/24 ,  H04W52/14

CPC classification number: H04W52/146 ,  H04W52/225 ,  H04W52/24

Abstract: As solution for selection of power control parameters is presented. The solution comprises determining, from a given set of radio access network parameters, a selection of radio access network parameters which have an effect on uplink power control, and training a neural network to determine uplink power control parameters, utilising as an input the selection of radio access network parameter, and utilising the trained neural network, with as an input the selection of radio access network parameters, obtain as an output a set of initial uplink power control parameters.

公开(公告)号：US20230216555A1

公开(公告)日：2023-07-06

申请号：US18093368

申请日：2023-01-05

Applicant: Nokia Solutions and Networks Oy

Inventor： Karthik Upadhya

IPC: H04B7/0456 ,  H01Q23/00 ,  H01Q21/06

CPC classification number: H04B7/0465 ,  H01Q23/00 ,  H01Q21/061

Abstract: Antenna arrays to be used in MIMO apparatuses are disclosed. Such an antenna array may include a plurality of array elements, wherein every second element in a first direction is a digital pre-distortion-less linear element, and every second element in the first direction is a non-linear element. In the antenna array, spacing between adjacent elements in the first direction is less than a half of a free space wavelength. A non-linear precoding is applied to transmissions from the antenna array, the non-linear precoding converting out-of-band emissions of the transmissions into reactive power in the near-field around the antenna array while ensuring that in-band signals generated by the elements remain unaffected.

公开(公告)号：US11546202B2

公开(公告)日：2023-01-03

申请号：US17183772

申请日：2021-02-24

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Karthik Upadhya ,  Stefan Wesemann

IPC: H04L27/34 ,  H03F3/24 ,  H04B1/04

Abstract: An apparatus is provided that includes circuitry for decomposing an input signal to multiple substantially constant-envelope components and an outphasing path for each substantially constant-envelope component. The apparatus also includes a modulator for discrete phase control in each outphasing path, an amplifier in each outphasing path and a combiner for combining output signals from the outphasing paths. A system and method are also provided.