Method and apparatus for providing an adaptive beamforming antenna for OFDM-based communication systems

The adaptive beam selection method addresses the challenge of optimal uplink beam selection in high-speed networks by using OFDM symbol structures to determine interference-free beam patterns, enhancing data transmission efficiency in 5G NR and LTE systems.

JP2026113567APending Publication Date: 2026-07-07MARVELL ASIA PTE LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
MARVELL ASIA PTE LTD
Filing Date
2026-04-01
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Accurately transporting and decoding data streams in high-speed communication networks like LTE and 5G NR is challenging due to multipath transmission and significant path loss, where existing beam selection methods based on user equipment feedback may not provide optimal uplink beam selection in the presence of interfering signals.

Method used

An adaptive beam selection method and apparatus that utilizes the structure of OFDM symbols, specifically the cyclic prefix and tail portions, to determine optimal beam patterns for uplink transmissions by forming matrices and applying a beamformer preset matrix, without requiring signal statistics, suitable for both base stations and user equipment.

Benefits of technology

Enables interference-free beam selection and optimal uplink transmission by determining appropriate beam patterns, applicable in 5G NR and LTE systems, even in the presence of interference, and compatible with existing beamforming technologies.

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Abstract

This invention provides an optimal beam selection method and apparatus for receiving uplink transmissions that take interference signals into consideration. [Solution] The symbol processor 400 includes a circuit 404 that forms a matrix (A) of cyclic prefix values ​​from orthogonal frequency division multiplexing (OFDM) symbols and a circuit 406 that forms a matrix (B) of tail values; a circuit 408 that forms an additive matrix (S) from matrices A and B and a circuit 410 that forms a difference matrix (D); a multiplication circuit 412 that generates matrices (P) and (Q) by multiplying a beamformer preset matrix (W) by matrices S and D; and a determination circuit 416 that determines a beam identifier from matrices P and Q.
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