公开(公告)号：US11700023B2

公开(公告)日：2023-07-11

申请号：US17471438

申请日：2021-09-10

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Karthik Upadhya ,  Carl Nuzman ,  Alexei Ashikhmin ,  Stefan Wesemann ,  Hong Yang

IPC: H04W88/06 ,  H04B1/00 ,  H04B1/04

CPC classification number: H04B1/0064 ,  H04B1/0475 ,  H04W88/06

Abstract: An apparatus comprises: a first plurality of first radio frequency chains; a second plurality of second radio frequency chains, the first radio frequency chains being configured to produce wider side-band emissions than the second radio frequency chains; at least one antenna array comprising antenna elements, each of a first plurality of the antenna elements being coupled with a corresponding one of the first plurality of first radio frequency chains, the first plurality of first radio frequency chains being configured to cause transmissions predominately in a first band within a channel, each of a second plurality of the antenna elements being coupled with a corresponding one of the second plurality of second radio frequency chains, the second plurality of second radio frequency chains being configured to cause transmissions predominately in at least one second band within the channel.

公开(公告)号：US11544612B2

公开(公告)日：2023-01-03

申请号：US16412897

申请日：2019-05-15

Applicant: Nokia Technologies Oy

Inventor： Alexei Ashikhmin

IPC: G06N10/00 ,  G06F7/78 ,  H03M13/11 ,  B82Y10/00

Abstract: A memory system comprising a qubit array configured to store therein one or more entangled qubit states encoded using a quantum stabilizer code. The memory system further comprises a quantum-state-refresh module configured to refresh an entangled qubit state in the qubit array when a degradation error is detected therein. The quantum-state-refresh module is further configured to detect the degradation error by performing a redundant measurement of a set of syndrome values corresponding to the quantum stabilizer code. The redundant measurement is based on an error-correction code defined using the generator matrix of the quantum stabilizer code and a corresponding supplemental parity-check matrix. In an example embodiment, each of the generator and supplemental parity-check matrices has a respective inclined-stripe form.