IP Library › Granted Patent US 12,512,880
Granted Patent B2
US 12,512,880 · App. 18/364,405 · Granted Dec 30, 2025

Low complexity LoS MIMO system design for near field communication

Inventors: Sandy Saab (Plano, TX); Jorge Luis Gomez Ponce (Los Angeles, CA); Shadi Abu-Surra (Plano, TX); Gang Xu (Allen, TX)
Assignee: Samsung Electronics Co., Ltd.
H04B7/0443H04B7/043H04L27/2628
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Quick Facts
Patent No.
US 12,512,880
App. No.
18/364,405
Granted
Dec 30, 2025
Kind
B2
Abstract

A uniform circular array (UCA) is assisted with an analog inverse fast Fourier Fast transform (IFFT)/fast Fourier transform (FFT) precoder to reduce computational complexity in one or more line-of-sight (LoS) multiple-input multiple-output (MIMO) networks. Each port of the UCA includes a steerable miniaturized array with beam steering capability. Analog beam steering is performed via one of the analog IFFT/FFT precoder or one of the steerable miniaturized arrays in a port of the UCA, for improving one or more properties of steering one or more beams toward one or more intended destinations in the one or more LoS MIMO networks.

Claims (25)

1 . A method comprising:

providing a uniform circular array (UCA) that is assisted with an analog inverse fast Fourier transform (IFFT)/fast Fourier transform (FFT) precoder to reduce computational complexity in one or more line-of-sight (LoS) multiple-input multiple-output (MIMO) networks;

providing, in each port of the UCA, a steerable miniaturized array with beam steering capability; and

performing analog beam steering, via the analog IFFT/FFT precoder and the beam steering capability of the steerable miniaturized arrays in the ports of the UCA, for improving one or more properties of steering one or more beams toward one or more intended destinations in the one or more LOS MIMO networks.

2 . The method of claim 1 , wherein the one or more LOS MIMO networks includes one or more LoS MIMO backhaul mesh networks.

3 . The method of claim 1 , wherein the one or more properties include analog beam steering flexibility.

4 . The method of claim 1 , wherein the analog beam steering corrects for offsets in azimuth and elevation for the one or more intended destinations.

5 . The method of claim 1 , wherein the analog beam steering is based on an estimate for displacement of the one or more intended destinations.

6 . The method of claim 1 , wherein the analog beam steering is based on estimates for elevation angle ¿ and azimuth rotation y for the one or more intended destinations.

7 . The method of claim 1 , wherein equal power is allocated to all ports of the UCA.

8 . The method of claim 1 , wherein a water-filling power allocation scheme is employed to allocate power among best ports of the UCA.

9 . The method of claim 1 , wherein the analog IFFT/FFT precoder employs a rotation matrix.

10 . The method of claim 1 , wherein the beam steering is performed based on an angular range for 1% and 5% losses.

11 . An apparatus comprising:

a uniform circular array (UCA) that is assisted with an analog inverse fast Fourier transform (IFFT)/fast Fourier transform (FFT) precoder, configured to reduce computational complexity in one or more line-of-sight (LoS) multiple-input multiple-output (MIMO) networks, wherein each port of the UCA includes a steerable miniaturized array with beam steering capability;

a controller configured to perform analog beam steering, via the analog IFFT/FFT precoder and the beam steering capability of the steerable miniaturized arrays in the ports of the UCA, for improving one or more properties of steering one or more beams toward one or more intended destinations in the one or more LOS MIMO networks.

12 . The apparatus of claim 11 , wherein the one or more LOS MIMO networks includes one or more LOS MIMO backhaul mesh networks.

13 . The apparatus of claim 11 , wherein the one or more properties include analog beam steering flexibility.

14 . The apparatus of claim 11 , wherein the analog beam steering corrects for offsets in azimuth and elevation for the one or more intended destinations.

15 . The apparatus of claim 11 , wherein the analog beam steering is based on an estimate for displacement of the one or more intended destinations.

16 . The apparatus of claim 11 , wherein the analog beam steering is based on estimates for elevation angle y and azimuth rotation y for the one or more intended destinations.

17 . The apparatus of claim 11 , wherein equal power is allocated to all ports of the UCA.

18 . The apparatus of claim 11 , wherein a water-filling power allocation scheme is employed to allocate power among best ports of the UCA.

19 . The apparatus of claim 11 , wherein the analog IFFT/FFT precoder employs a rotation matrix.

20 . The apparatus of claim 11 , wherein the beam steering is performed based on an angular range for 1% and 5% losses.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 2, 2023
From: SAAB, SANDY; GOMEZ PONCE, JORGE LUIS; ABU-SURRA, SHADI; XU, GANG
To: SAMSUNG ELECTRONICS CO., LTD.
Reel/Frame 064473/0324 →
Continuity (2)
Provisional Application 63395232 · Aug 4, 2022
Related Publication 20240048192A1 · Feb 8, 2024
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