Frequency Ranking System for Intermodulation Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current RF transmitter coordination tools struggle to efficiently assign wireless channels in live entertainment events due to intermodulation interference, often resulting in either a limited set of reliable frequencies or a larger set with less reliable frequencies, failing to account for the varying importance of sound sources.
Innovation Solution
A system that computes and ranks frequencies based on susceptibility to intermodulation products, allowing for a more strategic assignment of channels by prioritizing critical sound sources and using software to automatically assign frequencies with lower interference to less important sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strict intermodulation analysis criteria are applied, then the reliability of frequency assignments is improved, but the quantity of available frequencies decreases
Solution Approach 1:
The patent applies local quality by differentiating the reliability requirements for different frequency assignments based on their importance. Critical sound sources (e.g., lead singers) are assigned frequencies with high reliability (low intermodulation interference), while less important sources can tolerate lower reliability. This resolves the contradiction by not uniformly applying strict criteria to all frequencies, but rather tailoring the reliability level to each specific assignment's needs.
Solution Approach 2:
The system changes the parameter of reliability assessment by computing and comparing intermodulation interference levels for each frequency. Instead of using a single binary pass/fail criterion, the patent calculates actual interference metrics and uses these to rank frequencies, allowing flexible assignment based on varying reliability requirements for different applications.
2Quantity of substance
If less stringent intermodulation analysis criteria are applied, then the quantity of available frequencies increases, but the reliability of frequency assignments decreases
Solution Approach 1:
The patent resolves this contradiction by applying different reliability levels to different frequency assignments based on their local needs. Critical applications receive frequencies with high reliability, while non-critical applications can use frequencies with lower reliability. This allows the system to maximize the total number of usable frequencies while maintaining adequate reliability for each specific use case.
3Ease of operation
If all frequencies are treated as equally reliable, then the ease of operation is improved, but the reliability of critical sound sources may be compromised
Solution Approach 1:
The patent applies preliminary action by pre-computing and ranking all available frequencies according to their intermodulation interference levels before the assignment process. This creates a prepared, ordered list that guides the RF coordinator in making optimal assignments. The system performs the complex analysis work in advance, so that during actual operation, the coordinator can simply select from the pre-ranked frequencies, maintaining ease of operation while ensuring reliability for critical sources.
4Device complexity
If manual frequency assignment is performed without ranking, then the device complexity is reduced, but the productivity of the RF coordinator decreases
Solution Approach 1:
The software tool performs preliminary intermodulation analysis and frequency ranking before the RF coordinator begins assignments. This pre-computation automates the complex mathematical analysis, allowing the coordinator to work more efficiently by selecting from pre-evaluated frequencies rather than performing manual calculations. The increased software complexity is justified by the significant gain in coordinator productivity.
Solution Approach 2:
The patent replaces the manual mechanical process of frequency selection with an automated computational system. Instead of the RF coordinator manually calculating intermodulation products and evaluating frequency compatibility, the software automatically performs these calculations and ranks frequencies. This substitution of mechanical human analysis with automated computational mechanics increases productivity while managing device complexity through algorithmic processing.
Data Source
AI summary
A machine which accepts a frequency set and ranks each frequency of said frequency set relative to other frequencies of said frequency set, according to susceptibility to intermodulation product interference from said set of frequencies.