Granted Patent B2

US 12,500,636 · App. 18/522,922 · Granted Dec 16, 2025

Inventor: Duk Hyun You (Daejeon, KR)

Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

H04B7/0469H04B7/10

Abstract

Claims (122)

1 . A method of a first communication node, comprising:

generating a first polarized signal by performing first baseband processing on a first set of modulation symbols;

generating a second polarized signal by multiplying the first polarized signal by a first conversion matrix;

generating a third polarized signal by multiplying the first polarized signal by a second conversion matrix; and

transmitting the second polarized signal and the third polarized signal using the same physical resources to a second communication node,

wherein the second polarized signal and the third polarized signal have different polarization schemes.

2 . The method according to claim 1 , wherein when a first polarization scheme used by the first communication node is different from a second polarization scheme used by the second communication node, a polarization conversion operation using the first conversion matrix is performed.

3 . The method according to claim 1 , further comprising: receiving, from the second communication node, information of a second polarization scheme used by the second communication node.

4 . The method according to claim 1 , wherein a polarization scheme for each of the first polarized signal and the second polarized signal is one of linear polarization (LP), horizontal polarization, vertical polarization, circular polarization (CP), left-handed circular polarization (LHCP), right-handed circular polarization (RHCP), cross polarization (XP), +45 degree polarization, or −45 degree polarization.

5 . The method according to claim 1 , further comprising:

generating a fourth polarized signal by performing second baseband processing on a second set of modulation symbols;

generating a fifth polarized signal by multiplying the fourth polarized signal by a third conversion matrix; and

transmitting the fifth polarized signal to the second communication node,

wherein the second polarized signal and the fifth polarized signal have different polarization schemes, and the first set of modulation symbols and the second set of modulation symbols are sets of modulation symbols for different physical channels, different physical signals, or different resource elements.

6 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is LP and a second polarization scheme of the second polarized signal is XP, the first conversion matrix includes C LPXP , and C LPXP is

1

2

[

1

1

-

1

1

]

.

7 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is LP and a second polarization scheme of the second polarized signal is CP, the first conversion matrix includes C LPCP , and C LPCP is

1

2

[

1

-

j

1

j

]

.

8 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is XP and a second polarization scheme of the second polarized signal is LP, the first conversion matrix includes C XPLP , and the C XPLP is

1

2

[

1

-

1

1

1

]

.

9 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is XP and a second polarization scheme of the second polarized signal is CP, the first conversion matrix includes C XPCP , and the C XPCP is

1

2

[

1

-

j

-

1

-

j

1

+

j

-

1

+

j

]

.

10 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is CP and a second polarization scheme of the second polarized signal is LP, the first conversion matrix includes C CPLP , and the C CPLP is

1

2

[

1

1

j

-

j

]

.

11 . The method according to claim 1 , wherein when a first polarization scheme of the first polarized signal is CP and a second polarization scheme of the second polarized signal is XP, the first conversion matrix includes C CPXP , and the C CPXP is

1

2

[

1

+

j

1

-

j

-

1

+

j

-

1

-

j

]

.

12 . A method of a second communication node, comprising:

receiving a first polarized signal and a third polarized signal in the same physical resources from a first communication node;

generating a second polarized signal by multiplying the first polarized signal by a first conversion matrix and by multiplying the third polarized signal by a second conversion matrix; and

generating a first set of modulation symbols by performing first baseband processing on the second polarized signal,

wherein the first polarized signal and the third polarized signal have different polarization schemes.

13 . The method according to claim 12 , wherein when a first polarization scheme used by the first communication node is different from a second polarization scheme used by the second communication node, a polarization conversion operation using the first conversion matrix is performed.

14 . The method according to claim 12 , wherein a polarization scheme for each of the first polarized signal and the second polarized signal is one of linear polarization (LP), horizontal polarization, vertical polarization, circular polarization (CP), left-handed circular polarization (LHCP), right-handed circular polarization (RHCP), cross polarization (XP), +45 degree polarization, or −45 degree polarization.

15 . The method according to claim 12 , further comprising:

receiving a fourth polarized signal from the first communication node;

generating a fifth polarized signal by multiplying the fourth polarized signal by a third conversion matrix; and

generating a second set of modulation symbols by performing second baseband processing on the fifth polarized signal,

wherein the first polarized signal and the fourth polarized signal have different polarization schemes, and the first set of modulation symbols and the second set of modulation symbols are sets of modulation symbols for different physical channels, different physical signals, or different resource elements.

16 . A first communication node comprising at least one processor,

wherein the at least one processor causes the first communication node to perform:

generating a first polarized signal by performing first baseband processing on a first set of modulation symbols;

generating a second polarized signal by multiplying the first polarized signal by a first conversion matrix;

generating a third polarized signal by multiplying the first polarized signal by a second conversion matrix;

transmitting the second polarized signal and the third polarized signal using the same physical resources to a second communication node,

wherein the second polarized signal and the third polarized signal have different polarization schemes.

17 . The first communication node according to claim 16 , wherein the at least one processor further causes the first communication node to perform:

generating a fourth polarized signal by performing second baseband processing on a second set of modulation symbols;

generating a fifth polarized signal by multiplying the fourth polarized signal by a third conversion matrix; and

transmitting the fifth polarized signal to the second communication node,

wherein the second polarized signal and the fifth polarized signal have different polarization schemes, and the first set of modulation symbols and the second set of modulation symbols are sets of modulation symbols for different physical channels, different physical signals, or different resource elements.

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (18)