Radio Node Receive Configuration for Low-Resolution ADCs

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently utilizing low-resolution analog-to-digital converters (ADCs) due to increased signal reception errors caused by quantization distortion, leading to energy inefficiencies and degraded signal quality.

Innovation Solution

Implement techniques for configuring and managing low-resolution receive behaviors of radio nodes, including channel inversion and pre-equalization, to mitigate quantization distortion and optimize energy consumption while maintaining signal quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If low-resolution ADCs are used in wireless communication systems, then energy consumption is reduced, but signal reception quality deteriorates due to quantization distortion

Engineering Contradiction:

Improveenergy consumptionVSAvoidsignal reception quality

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent applies preliminary action by performing pre-equalization at the transmitter before the signal reaches the low-resolution ADC. The transmitter estimates the channel response and applies equalization coefficients to compensate for quantization distortion that will occur at the receiver. This preliminary compensation action allows the use of low-resolution ADCs while maintaining acceptable signal quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent employs feedback mechanisms where the receiver measures actual signal quality metrics (such as signal-to-noise ratio, error vector magnitude, or bit error rate) and feeds this information back to the transmitter. Based on this feedback, the transmitter dynamically adjusts transmission parameters including modulation and coding scheme (MCS), power levels, and equalization coefficients to optimize performance for the specific low-resolution ADC conditions.

Inventive Principle:

Principle #23Feedback

2Device complexity

If low-resolution ADCs are used, then device complexity is reduced, but measurement precision deteriorates

Engineering Contradiction:

Improvedevice complexityVSAvoidmeasurement precision

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent applies preliminary action by performing pre-equalization at the transmitter before the signal reaches the low-resolution ADC. The transmitter estimates the channel response and applies equalization coefficients to compensate for quantization distortion that will occur at the receiver. This preliminary compensation action allows the use of low-resolution ADCs while maintaining acceptable signal quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent changes key parameters including the modulation and coding scheme (MCS), transmission power levels, and equalization coefficients based on the capabilities of the low-resolution ADC. The system dynamically adapts these parameters to optimize the balance between measurement precision and the limitations of low-resolution conversion, allowing accurate communication despite the reduced ADC resolution.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If channel inversion or pre-equalization is applied, then quantization distortion is mitigated, but processing requirements increase

Engineering Contradiction:

Improvesignal qualityVSAvoidprocessing requirements

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by performing pre-equalization at the transmitter before the signal reaches the low-resolution ADC. The transmitter estimates the channel response and applies equalization coefficients to compensate for quantization distortion that will occur at the receiver. This preliminary compensation action allows the use of low-resolution ADCs while maintaining acceptable signal quality.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent applies partial action by implementing channel inversion or pre-equalization only for specific signal components or frequency sub-bands rather than the entire signal spectrum. The system selectively applies equalization where quantization distortion is most severe, leaving other portions of the signal processing as-is. This partial approach reduces the computational burden while still providing meaningful distortion compensation.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20260031945A1Low-resolution behavior in a radio node

Publication Date: 2026.01.29 LENOVO (SINGAPORE) PTE LTD

AI summary

Various aspects of the present disclosure relate to low-resolution behavior in a radio node. An apparatus, such as a user equipment (UE) and/or network equipment, transmits first configuration information comprising one or more low-resolution receive behaviors of a first radio node, and receives second configuration information for reception of a modulated signal, wherein the second configuration information is based at least in part on the first configuration information. The apparatus receives, based at least in part on the second configuration information, the modulated signal comprising one or more of data or control information.