Data-Aware Precoding for Channel and Interference Management

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Solution Overview

Problem

Existing wireless communication systems, particularly 5G NR, face challenges in optimizing precoding techniques to efficiently manage channel conditions and data interference, leading to suboptimal user experience and processing load.

Innovation Solution

Implementing data-aware precoding that combines channel measurements with data content to determine optimal precoding strategies, adjusting transmissions to mitigate or utilize interference effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional precoding techniques are used that rely only on channel measurements, then the system complexity is lower, but the communication efficiency and user experience are suboptimal

Engineering Contradiction:

Improvecommunication efficiencyVSAvoidprocessing load

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The transmitter performs preliminary analysis of data characteristics before precoding to determine optimal precoding strategies. Channel measurements are obtained in advance, and data-aware precoding is applied by combining channel state information with data content analysis to pre-determine precoding parameters that will optimize transmission performance before the actual data transmission occurs.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If data-aware precoding is implemented to account for both channel conditions and data characteristics, then user experience and communication efficiency are improved, but processing load increases

Engineering Contradiction:

Improveuser experienceVSAvoidprocessing load

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The precoding process is segmented into distinct functional components: channel measurement processing, data characteristic analysis, and precoder determination. Each component handles specific tasks independently, allowing the system to process channel state information and data content separately before combining their effects to determine the final precoding strategy, thereby managing complexity through modular processing.

Inventive Principle:

Principle #1Segmentation

3Reliability

If precoding is optimized to mitigate interference effectively, then communication reliability improves, but the device complexity and processing requirements increase

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidprocessing requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system converts potentially harmful interference into beneficial effects through data-aware precoding. By analyzing data characteristics alongside channel conditions, the precoder is designed to transform interference patterns that would normally degrade performance into constructive interference or at least neutral effects, thereby improving communication reliability while managing processing requirements through intelligent signal manipulation.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS12451937B2Data based precoding techniques

Publication Date: 2025.10.21 QUALCOMM INC

AI summary

Data aware precoding techniques are disclosed. A transmitter may apply a precoder function to payload data to obtain a precoded data transmission. The precoder function may include a first portion, e.g., based on a channel measurement, and a second portion, e.g., based on data for transmission. The transmitter may transmit the precoded data transmission. A receiver may receive a precoded data transmission that is precoded based on a channel measurement and based on data comprised in the data transmission. The receiver may decode the precoded data transmission based on the channel measurement and the data comprised in the data transmission.