US 12,483,443 B2Granted

Determining a magnitude of a composite zero-forcing equalizer

AssigneeLenovo (Singapore) Pte. Ltd.

InventorColin D. Frank

Life of this patent

Estimating the term…

Loading patent…

Abstract

Apparatuses, methods, and systems are disclosed for determining a magnitude of a composite zero-forcing equalizer. One method includes measuring a first frequency response at a first antenna connector. The method includes determining a first zero-forcing equalizer for the first antenna connector as an inverse of the first frequency response. The method includes measuring a second frequency response at a second antenna connector. The method includes determining a second zero-forcing equalizer for the second antenna connector as an inverse of the second frequency response. The method includes determining a magnitude of a composite zero-forcing equalizer as a square root of a weighted combination of squares of magnitudes of the first zero-forcing equalizer and the second zero-forcing equalizer. A first weight applied for the first antenna connector is a square of a first power measured at the first antenna connector.

Claims17

Dependent claims

A user equipment (UE), comprising:

at least one memory;
and
at least one processor coupled with the at least one memory and configured to cause the UE to:
measure a first frequency response at a first antenna connector;
determine a first zero-forcing equalizer for the first antenna connector as an inverse of the first frequency response;
measure a second frequency response at a second antenna connector;
determine a second zero-forcing equalizer for the second antenna connector as an inverse of the second frequency response;
and
determine a magnitude of a composite zero-forcing equalizer as a square root of a weighted combination of squares of magnitudes of the first zero-forcing equalizer and the second zero-forcing equalizer, wherein a first weight applied for the first antenna connector is a square of a first power measured at the first antenna connector and a second weight applied for the second antenna connector is a square of a second power measured at the second antenna connector, wherein the magnitude of the composite zero-forcing equalizer is determined by
EC
⁡
(
f
)
=
P
1
2
⁢
❘
"\[LeftBracketingBar]"
EC
1
(
f
)
❘
"\[RightBracketingBar]"
2
+
P
2
2
⁢
❘
"\[LeftBracketingBar]"
EC
2
(
f
)
❘
"\[RightBracketingBar]"
2
P
1
+
P
2
,
and wherein P1 is a first power measured at the first antenna connector, P2 is a second power measured at the second antenna connector, EC1(f) is the frequency response of the first zero-forcing equalizer for the first antenna connector, and EC2(f) is the frequency response of the second zero-forcing equalizer for the second antenna connector.

48 more elements

A processor for wireless communication, comprising:

at least one controller coupled with at least one memory and configured to cause the processor to:
measure a first frequency response at a first antenna connector;
determine a first zero-forcing equalizer for the first antenna connector as an inverse of the first frequency response;
measure a second frequency response at a second antenna connector;
determine a second zero-forcing equalizer for the second antenna connector as an inverse of the second frequency response;
and
determine a magnitude of a composite zero-forcing equalizer as a square root of a weighted combination of squares of magnitudes of the first zero-forcing equalizer and the second zero-forcing equalizer, wherein a first weight applied for the first antenna connector is a square of a first power measured at the first antenna connector and a second weight applied for the second antenna connector is a square of a second power measured at the second antenna connector, wherein the magnitude of the composite zero-forcing equalizer is determined by
EC
⁡
(
f
)
=
P
1
2
⁢
❘
"\[LeftBracketingBar]"
EC
1
(
f
)
❘
"\[RightBracketingBar]"
2
+
P
2
2
⁢
❘
"\[LeftBracketingBar]"
EC
2
(
f
)
❘
"\[RightBracketingBar]"
2
P
1
+
P
2
,
and wherein P1 is a first power measured at the first antenna connector, P2 is a second power measured at the second antenna connector, EC1(f) is the frequency response of the first zero-forcing equalizer for the first antenna connector, and EC2(f) is the frequency response of the second zero-forcing equalizer for the second antenna connector.

46 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/563,093Filed 20 May 2022 · us provisional application
Priority: 21 May 2021
Published: US 2024/0250853 A125 Jul 2024
Granted: 25 Nov 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04B 7/0854
Joint weighting: using error minimizing algorithms, e.g. minimum mean squared error [MMSE], "cross-correlation" or matrix inversion
H04L 25/0258
Channel estimation algorithms: channel estimation using zero-forcing criteria
H04B 17/102
For measurement of specific parameters of the transmitter or components thereof: power radiated at antenna
H04L 5/0051
Allocation of pilot signals, i.e. of signals known to the receiver: of dedicated pilots, i.e. pilots destined for a single user or terminal