Frequency Agile Radio Interference Avoidance
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Solution Overview
Problem
Existing wireless communication systems face challenges in minimizing interference between primary transmitters and frequency agile radios, especially in unfriendly environments where obtaining the location, frequency, and transmit power of primary transmitters is difficult.
Innovation Solution
The system employs frequency agile radios equipped with modules like controllers, position devices, and transmitters that determine position coordinates and signal power datums to estimate coverage areas and interference-free transmission characteristics, allowing for second channel communications without affecting primary users by adjusting frequencies and powers based on measured signal strengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency agile radios operate in unfriendly environments without knowing primary transmitter parameters, then communication flexibility is improved, but interference to primary users increases
Solution Approach 1:
The system performs preliminary spectrum sensing and signal strength measurements before establishing communications. Frequency agile radios measure signal strengths from primary transmitters and estimate coverage areas in advance, allowing them to proactively identify and avoid frequencies and locations that would cause interference, thus resolving the contradiction between communication flexibility and interference prevention
Solution Approach 2:
The system continuously monitors signal strength measurements and feedback from the environment. Frequency agile radios use this feedback to dynamically adjust their transmission parameters, select appropriate frequencies, and modify their coverage areas to avoid interfering with primary users while maintaining communication flexibility in unfriendly environments
2Measurement precision
If frequency agile radios estimate coverage areas using signal strength measurements, then transmission precision is improved, but system complexity increases
Solution Approach 1:
Frequency agile radios perform self-service by autonomously measuring signal strengths, estimating primary transmitter coverage areas, and determining their own interference-free transmission parameters. This self-service approach improves measurement precision while avoiding the need for complex external coordination systems, thus managing system complexity effectively
Data Source
AI summary
A frequency agile radio configured to determine an estimated coverage area of a primary transmitter is disclosed. The radio includes at least one position device configured to determine a position coordinate of the radio and generate a corresponding position signal. The radio also includes at least one frequency agile receiver configured to measure a power of a transmission at least one frequency and generate a corresponding signal. Additionally, the radio includes at least one controller in communication with the at least one position device and the at least one frequency agile receiver. The controller is configured to determine a plurality of position coordinates of the radio and a plurality of signal power datums. The controller is also configured to estimate the coverage area of the at least one primary transmitter, based on the determined plurality of position coordinates and the determined plurality of signal power datums.