公开(公告)号：US20230041939A1

公开(公告)日：2023-02-09

申请号：US17791248

申请日：2020-01-20

Applicant: Nokia Technologies Oy

Inventor： Kai ZHU

IPC: H04L9/06 ,  H04L9/00

Abstract: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for data encryption and decryption. In example embodiments, a first cipher key and a second cipher key are obtained. The first cipher key comprises a vector of cipher elements, and the second cipher key comprises a set of indices corresponding to a subset matrix of a polarizing matrix. A cipher vector is generated by polar coding of a data vector based on the first and second cipher keys and the polarizing matrix. The data and cipher vectors are combined for encryption of the data vector.

公开(公告)号：US20230163877A1

公开(公告)日：2023-05-25

申请号：US17908983

申请日：2020-03-05

Applicant: Nokia Technologies OY

Inventor： Kai ZHU ,  Yu CHEN

IPC: H04L1/00 ,  H03M13/13

CPC classification number: H04L1/0054 ,  H04L1/0061 ,  H04L1/0057 ,  H03M13/13

Abstract: Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of enhanced decoding for polarization code. The method includes determining a likelihood sequence associated with a signal sequence received from a second device via a communication channel between the second device and the first device; generating a set of candidate sequences of the signal by processing the likelihood sequence with a first operation; determining a reference sequence by processing the likelihood sequence with a second operation different from the first operation; and determining a target sequence of the signal from the set of candidate sequences at least partially based on the reference sequence. In this way, the decoding at receiver side can be enhanced to less rely on CRC during decoding. This could dramatically improve the overall performance of the channel.