Wireless Transceiver Interference Compensation via Dynamic Link Control
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Solution Overview
Problem
Existing wireless communication systems face interference issues from various sources, including narrowband, wideband, and self-interference, which affect the performance and reliability of communication devices, particularly in environments with increasing wireless connectivity.
Innovation Solution
A wireless communication system employing orthogonal frequency-division multiplexing (OFDM) transceivers and controllers that detect interference types and adjust settable link characteristics such as transmission power, frequency diversity, modulation, and adaptive filtering to compensate for interference, using interference maps and algorithms to optimize signal processing and minimize interference impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high signal-to-noise ratio transmissions are used to achieve high spectral efficiency, then communication quality is improved, but susceptibility to interference increases
Solution Approach 1:
The system dynamically changes transmission parameters including frequency selection, modulation scheme, and power level based on detected interference conditions. When interference is detected, the system adjusts these parameters to maintain communication quality while reducing susceptibility to the harmful interference.
Solution Approach 2:
The system employs feedback mechanisms where the receiver detects interference and sends information back to the transmitter. This feedback enables the transmitter to adjust its parameters in real-time, creating a closed-loop system that adapts to changing interference conditions while maintaining high spectral efficiency.
2Object-affected harmful factors
If frequency diversity is used to compensate for interference by adjusting operating frequency, then interference resistance is improved, but system complexity increases
Solution Approach 1:
The system implements dynamic frequency selection where the operating frequency is adjusted in real-time based on interference detection. Rather than using complex static diversity schemes, the system dynamically switches frequencies to avoid interference, simplifying the overall system architecture while maintaining interference resistance.
3Reliability
If adaptive data rate modulation and channel bandwidth are used for wideband interference compensation, then communication reliability is improved, but processing complexity increases
Solution Approach 1:
The system changes modulation and bandwidth parameters adaptively based on interference conditions. For wideband interference, the system adjusts the data rate and channel bandwidth to maintain reliable communication, while for narrowband interference, it uses different parameter adjustments, thereby managing processing complexity through targeted parameter optimization.
Data Source
AI summary
A wireless communication system may include first and second wireless communications devices communicating with one another via a wireless communications link having a settable link characteristic. The first and second wireless communications devices may include respective first and second wireless transceivers and respective first and second controllers coupled thereto. The first controller may be for detecting received interference, for determining a type of the interference from among interference types comprising wideband interference and narrowband interference, and for setting the settable link characteristic to compensate for the interference based upon the interference type.