Wireless Interference Mitigation via Dynamic Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication systems face capacity limitations due to co-channel interference, which is exacerbated by the compact design and cost constraints of modern mobile devices, making efficient interference mitigation challenging.
Innovation Solution
A wireless communication system with a communication interface and a control module that calculates a capacity region to maximize a reference signal by removing interference, employing successive interference cancellation and joint decoding techniques to optimize signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple receive antennas are used for interference suppression, then interference mitigation performance is improved, but device size and cost increase
Solution Approach 1:
The patent changes the operational parameters of the single antenna by dynamically adjusting reception modes (solo reception, interference cancellation mode, joint decoding mode) based on signal strength and interference levels. This allows the system to achieve interference mitigation performance comparable to multiple antennas while maintaining a compact single-antenna design.
Solution Approach 2:
The system dynamically switches between different reception modes and algorithms based on real-time channel conditions. The control module adjusts the reception mode, modulation scheme, and error correction parameters adaptively, enabling a single antenna to perform functions that would traditionally require multiple fixed antennas.
2Productivity
If aggressive frequency reuse pattern is applied to increase capacity, then system throughput is improved, but co-channel interference increases
Solution Approach 1:
The patent converts the harmful co-channel interference into a detectable signal that can be processed and canceled. By treating interference as a separate signal component with its own characteristics (strength, modulation, coding), the system can identify and remove it, thereby enabling aggressive frequency reuse while maintaining signal quality.
Solution Approach 2:
The system performs preliminary interference cancellation by decoding and reconstructing the interference signal before it corrupts the desired signal. The control module proactively identifies interference components and removes them in advance, preventing interference degradation before it occurs.
3Productivity
If advanced interference cancellation algorithms are implemented in mobile terminals, then capacity in interference-limited scenarios is improved, but device complexity increases
Solution Approach 1:
The patent segments the reception process into distinct modes (solo reception, interference cancellation mode, joint decoding mode) with different levels of computational complexity. The control module selects the appropriate segment based on channel conditions, avoiding the need to always run the most complex algorithms and thereby reducing average device complexity while maintaining high capacity when needed.
Data Source
AI summary
A wireless communication system includes: a communication interface configured to receive a desired input signal and an interference input signal; and a control module, coupled to the communication interface, configured to calculate a capacity region to maximize a first R1 reference for the desired input signal by removing the interference input signal.