Wideband Interference Reduction Circuit for Full-Duplex Wireless
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Solution Overview
Problem
Existing communication devices face challenges in achieving full-duplex wireless signal transmission due to interference between transmitting and receiving paths, requiring complex and scenario-specific interference cancellation methods that are not flexible or cost-effective for various applications.
Innovation Solution
A wideband interference reduction mechanism is introduced, converting signals from the transmitting path into anti-phased signals and providing them to the receiving path, achieving symmetrical coupling and compensation of unwanted signal parts in the time domain, thus enabling flexible and cost-effective interference cancellation across a wide range of scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing interference cancellation methods are used, then interference between transmitting and receiving paths is reduced, but the solution becomes complex and scenario-specific requiring different solutions for different interference constellations
Solution Approach 1:
The patent applies universality by creating a single interference cancellation circuit that can handle multiple interference constellations through parameter adjustment. The circuit uses adjustable components (variable resistors, capacitors, or programmable elements) that can be reconfigured to cancel different interference patterns without requiring separate dedicated circuits for each scenario, thus reducing overall device complexity while maintaining broad applicability.
Solution Approach 2:
The patent employs parameter changes by modifying the electrical characteristics (resistance, capacitance, inductance values) of the interference cancellation circuit to adapt to different interference constellations. Instead of designing separate hardwired circuits for each interference scenario, the system adjusts parameters dynamically or manually to match the specific interference pattern, achieving flexible interference cancellation with a single universal circuit design.
2Object-affected harmful factors
If scenario-specific interference cancellation is implemented, then interference is effectively cancelled for a particular constellation, but the solution is not flexible for different interference scenarios
Solution Approach 1:
The patent applies dynamics by making the interference cancellation circuit adjustable rather than fixed. The circuit incorporates variable elements that can be reconfigured based on the specific interference constellation detected or anticipated. This dynamic adaptability allows the same circuit to effectively handle different interference scenarios by adjusting its characteristics, eliminating the need for multiple dedicated fixed circuits.
Solution Approach 2:
The patent implements universality through a single interference cancellation circuit designed to handle multiple interference constellations. The circuit serves multiple functions by adapting its parameters to match different interference patterns, replacing the need for separate dedicated circuits for each scenario. This universal design provides both effectiveness for specific constellations and flexibility for various scenarios.
3Object-affected harmful factors
If complex computing and adjusting is performed in the interference cancellation circuit, then interference is accurately cancelled, but the process is time-consuming and costly
Solution Approach 1:
The patent applies this principle by using simple, inexpensive adjustable components (variable resistors, capacitors, or basic programmable elements) instead of complex computational systems. These cheap components can be quickly adjusted or reconfigured for different interference scenarios without requiring time-consuming complex calculations or expensive processing hardware, achieving adequate interference cancellation with minimal resource expenditure.
Solution Approach 2:
The patent implements self-service by designing the interference cancellation circuit to automatically or semi-automatically adjust its parameters based on detected interference patterns. The circuit can self-tune its characteristics without requiring complex external computing systems or manual intervention, reducing the time and computational resources needed while maintaining accurate interference cancellation.
Data Source
AI summary
The invention is related to a communication device and a method for wireless signal transmission. An interference reduction means is arranged in between a transmitting path and a receiving path. The interference reduction mean is a wideband interference reduction means which converts a signal from said transmitting path into an anti-phased signal to provide the anti-phased signal to said receiving path.