Frame Trigger Recreation for Signal Analyzer Synchronization
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Solution Overview
Problem
Existing methods for synchronizing signal analyzers, such as U.S. Pat. No. 8,130,884 B2, are complex and inefficient, and do not effectively recreate frame triggers necessary for accurate over-the-air measurements.
Innovation Solution
A frame trigger recreation method and recreator that generate a periodic trigger based on the difference between receiver and transmitter clocks, with adjustments and offsets, allowing for high accuracy and efficiency in signal measurements, and optionally involving demodulation, user input, and automatic determination of trigger parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex synchronization apparatus with multiple units (ADC, signal storage unit, trigger signal generation unit, signal acquisition control unit, signal analysis unit, time error control unit) is used, then signal acquisition and analysis can be performed, but the device complexity increases and efficiency decreases
Solution Approach 1:
The patent extracts the frame trigger recreation function from the complex synchronization apparatus and implements it as a separate, dedicated module. This module specifically handles the generation of periodic triggers based on receiver clock and frame synchronization information, separating this function from the overall complex system and thereby reducing the apparent complexity while maintaining the necessary reliability for signal acquisition.
Solution Approach 2:
The patent introduces an intermediary frame trigger recreation module that mediates between the receiver clock and the signal acquisition process. This intermediary component translates receiver clock information and frame synchronization data into periodic triggers, acting as a bridge that simplifies the interaction between different system components and reduces overall system complexity.
2Measurement precision
If the existing synchronization method is used, then signal analysis can be performed, but it does not allow for recreating frame triggers necessary for particularly accurate measurements
Solution Approach 1:
The patent implements preliminary action by recreating frame triggers in advance based on receiver clock information and frame synchronization data. The periodic trigger generation occurs before signal acquisition, allowing the system to be pre-synchronized with the expected frame structure. This preliminary synchronization enables both high measurement accuracy (by ensuring proper frame alignment) and high efficiency (by avoiding real-time synchronization delays).
Solution Approach 2:
The patent employs feedback mechanisms where the frame trigger recreation module continuously monitors receiver clock information and frame synchronization status, adjusting the periodic trigger generation accordingly. This feedback loop ensures that the recreated frame triggers remain accurately synchronized with the actual signal frames, maintaining measurement precision while the automated nature of the feedback provides efficiency.
3Measurement precision
If manual frame trigger generation is performed, then measurement accuracy can be maintained, but time consumption increases and efficiency decreases
Solution Approach 1:
The patent implements self-service by enabling the frame trigger recreation module to automatically generate periodic triggers using receiver clock information and frame synchronization data without requiring manual intervention. The module autonomously calculates the appropriate trigger timing and generates triggers at the correct intervals, maintaining measurement accuracy while eliminating the time loss associated with manual frame trigger generation.
Data Source
AI summary
A frame trigger recreation method is provided. Said frame trigger recreation method comprises the steps of generating a periodic trigger on the basis of a receiver clock with at least one period adjustment and at least one offset based on a difference between the receiver clock and a transmitter clock.