Channel calibration using parameter perturbation

EP4758727A2Pending Publication Date: 2026-06-17COHERE TECHNOLOGIES INC
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
COHERE TECHNOLOGIES INC
Filing Date
2024-07-25
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Current wireless communication networks face challenges in managing bandwidth due to the exponential growth in wireless data traffic, which affects the quality of service for users, especially with the increasing number of user devices and the need for channel calibration in multi-antenna systems.

Method used

The proposed method involves determining a current precoding operational point and performing two sets of measurement transmissions with precoding operational points positively and negatively perturbed from the current point. Feedback signals from these transmissions are used to estimate a next precoding operational point for improved channel calibration.

Benefits of technology

This method enhances channel calibration in wireless networks, improving operational efficiency and maintaining high-quality service even under high data traffic conditions by optimizing precoding operational points.

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Abstract

Methods, systems, and devices for channel calibration based on parameter perturbation are described. An example wireless communication method includes determining a current precoding operational point (OP) for transmissions to one or more wireless devices, performing a first (and second) set of measurement transmissions having a first (and second) precoding OP that is positively (negatively) perturbed from the current precoding OP by a first (second) perturbation value, and estimating, based on one or more feedback signals received from the one or more wireless devices in response to the first set of measurement transmissions and the second set of measurement transmissions, a next precoding OP to be used for transmissions from the network device to the one or more wireless devices.
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