Loopback Receiver Noise Cancellation for Concurrent WiFi Bluetooth Sensitivity

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Solution Overview

Problem

Concurrent use of multiple communication technologies, such as WiFi and Bluetooth, on a single device leads to concurrency issues due to interference, degrading receiver sensitivity and range, as they often operate in the same bandwidth and introduce noise into each other's signals.

Innovation Solution

A communication system incorporating noise cancellation techniques, including a loopback receiver and noise remover, to identify and subtract direct noise from the receive signal, thereby improving receiver sensitivity and range without impacting transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple communication technologies are incorporated into a single device to enable communication with other devices using different technologies, then adaptability is improved, but noise and interference increase degrading receiver sensitivity

Engineering Contradiction:

ImproveadaptabilityVSAvoidnoise

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent segments the received signal into multiple components corresponding to different communication technologies. Each signal component is processed separately through dedicated filtering and demodulation paths, allowing the system to isolate and remove noise from specific technology channels while preserving the desired signal components.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary processing components including filters and signal separation mechanisms that act as mediators between the mixed received signal and the individual communication technology processors. These intermediaries selectively pass desired signal components while blocking or attenuating noise from concurrent transmissions.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple communication technologies operate concurrently in the same bandwidth, then communication versatility is improved, but receiver sensitivity deteriorates due to interference

Engineering Contradiction:

Improvecommunication versatilityVSAvoidreceiver sensitivity

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent applies local quality by assigning different filtering characteristics to different signal components based on their specific communication technology requirements. Each signal path receives customized processing parameters optimized for its particular technology, allowing precise noise rejection while maintaining signal integrity for each concurrent communication channel.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent employs partial action by applying noise cancellation and filtering only to the extent necessary for each specific communication technology channel. Rather than uniformly processing the entire received signal, the system selectively applies processing mechanisms to specific frequency ranges or signal components where interference occurs, preserving receiver sensitivity for non-interfering channels.

Inventive Principle:

Principle #16Partial or excessive action

3Measurement precision

If noise cancellation techniques are applied to improve receiver sensitivity, then receiver performance is improved, but system complexity increases

Engineering Contradiction:

Improvereceiver sensitivityVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple noise cancellation and signal processing functions into integrated processing blocks that handle multiple communication technologies simultaneously. By combining filtering, demodulation, and noise rejection operations into unified processing stages, the system achieves enhanced receiver sensitivity without proportionally increasing overall system complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements universal processing components that can handle multiple communication technologies through a single integrated pathway. The signal processing architecture uses multi-functional blocks that adapt their operation based on the detected communication technology type, reducing the need for separate dedicated processing chains for each technology and thereby limiting complexity growth.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10396839B2Enhanced receive sensitivity for concurrent communications

Publication Date: 2019.08.27 INTEL CORP

AI summary

A system using multiple communication technologies for concurrent communication is disclosed. The system includes a loopback receiver, a receiver, and a noise remover component. The loopback receiver is configured to obtain a coupled signal and generate a noise signal from the coupled signal. The noise signal includes direct transmission noise. The receiver is configured to receive a chain receive signal and to provide a receive signal therefrom. The noise remover component is configured to generate a wanted receive signal from the noise signal and the receive signal.