Adaptive Filter for Collocated Transceiver Interference
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Solution Overview
Problem
Conventional techniques fail to efficiently and effectively reduce interference between collocated transceivers in wireless communications devices, particularly when they operate asynchronously and share the same transmission medium or band.
Innovation Solution
The implementation of filters coupled to transceivers that can identify and remove interference components from received signals, using adaptive filtering techniques and combiners to cancel out interference, with configuration and calibration processes to optimize filter settings dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple transceivers operate asynchronously on the same transmission medium, then communication versatility is improved, but interference between transceivers increases
Solution Approach 1:
The patent introduces an intermediary filtering mechanism that sits between the transmit and receive paths. This filter receives the transmitted signal, processes it to identify interference components, and generates cancellation signals that are injected back into the receive path to neutralize the interference, thereby enabling multiple transceivers to operate simultaneously without mutual disruption
Solution Approach 2:
The system implements feedback by continuously monitoring the transmitted signal characteristics and using this information to dynamically adjust the filter settings. The filter settings are updated based on the actual interference patterns observed, creating a closed-loop system that adapts to changing communication conditions and maintains optimal interference cancellation performance
2Reliability
If filters are added to reduce interference, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The filter is designed to serve multiple functions: it processes the transmitted signal to identify interference patterns, generates cancellation signals, and dynamically adapts to different communication conditions. By making the filter multi-functional, the patent reduces the need for separate dedicated components for each function, thereby limiting the increase in device complexity while maintaining improved reliability
Data Source
AI summary
Systems, methods, and devices reduce interference experienced by wireless communications devices. Methods include receiving a first signal from a first transceiver, the first signal being compatible with a first communications protocol, and configuring a filter based, at least in part, on the received first signal, the filter being communicatively coupled to a second transceiver collocated in a same wireless communications device as the first transceiver. The methods further include receiving a second signal, the second signal being compatible with a second communications protocol, and filtering the second signal to remove at least some components of the first signal from the second signal, the filtering reducing at least some interference from the first signal with the second signal. The methods also include providing the filtered second signal to the second transceiver.