Method and apparatus for detecting signal with quantum computing in MIMO system

Patent metadata

Field	Value
Publication number	US-11483039-B2
Application number	US-202117389256-A
Country	US
Kind code	B2
Filing date	Jul 29, 2021
Priority date	Jul 30, 2020
Publication date	Oct 25, 2022
Grant date	Oct 25, 2022

Abstract

A method of detecting a signal in a wireless communication system supporting multiple-input multiple-output (MIMO) is provided. The method includes obtaining a MIMO channel matrix between a transmission end and a reception end and a reception vector received by the reception end, identifying a modulation scheme of the transmission end, applying a preset equation modification scheme to the MIMO channel matrix and the reception vector according to the identified modulation scheme, and detecting a transmission vector of the transmission end by performing quantum calculation on the modified MIMO channel matrix and the modified reception vector.

First claim

What is claimed is:

1. A method of detecting a signal in a wireless communication system supporting multiple-input multiple-output (MIMO), the method comprising:
obtaining a MIMO channel matrix between a transmission end and a reception end and a reception vector received by the reception end;
identifying a modulation scheme of the transmission end;
applying a preset equation modification scheme to the MIMO channel matrix and the reception vector according to the identified modulation scheme; and
detecting a transmission vector of the transmission end by performing quantum calculation on the modified MIMO channel matrix and the modified reception vector.

2. The method of claim 1 , wherein the modulation scheme is one of a binary phase shift keying (BPSK) modulation scheme, a quadrature phase shift keying (QPSK) modulation scheme, an M-ary phase shift keying (MPSK) modulation scheme, or a quadrature amplitude modulation (QAM) modulation scheme, and
wherein, M is a power of 2 which is equal to or greater than 2.

3. The method of claim 2 , wherein, when the modulation scheme is the MPSK modulation scheme, the modified MIMO channel matrix and the modified reception vector are modified by using the preset equation modification scheme, wherein the preset equation modification scheme is expressed as:

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Assignees

• Samsung Electronics Co Ltd
• Korean Univ Research And Business Foundation
• Univ Korea Res & Bus Found

Inventors

• Lee Kwonjong
• Noh Kwangseok
• Park Jeonghoon
• Heo Jun

Classifications

• H04B7/0456 Primary

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04B7/0413 Primary

  MIMO systems · CPC title

• H04L27/0008

  arrangements for allowing a transmitter or receiver to use more than one type of modulation (negotiating modulation type for two-way transmission paths H04L5/1453) · CPC title

• H04L25/0202

  Channel estimation · CPC title