Independent BER Test Device for Automated Interference Assessment
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Solution Overview
Problem
Conventional bit error rate tests in satellite communication systems are labor-intensive and require manual intervention, disrupting normal operations and being limited to conventional satellite assignments, while also being ineffective in accurately measuring interference-induced degradation.
Innovation Solution
An unmanned Bit Error Rate Test (UBERT) system that uses a demodulator, test bit pattern generator, bit pattern comparator, modulator, and computation processor, integrated with a power combiner and RF spectrum analyzer, to conduct automated interference assessment without satellite or remote gateway support, allowing tests to be performed while maintaining communication links and identifying optimal test channels and power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional bit error rate tests are performed using manual intervention and satellite gateway support, then the test can be conducted with basic equipment, but the test process becomes labor-intensive and disrupts normal communication operations
Solution Approach 1:
The system performs self-testing by generating test signals locally through the modulator and comparator, eliminating the need for external satellite gateway coordination. The subscriber receiver autonomously conducts BER measurements by comparing received test signals against expected patterns, enabling independent operation without disrupting normal communications.
Solution Approach 2:
The subscriber receiver performs multiple functions: it simultaneously handles normal communication reception and BER testing. The modulator and comparator components enable the receiver to generate and analyze test signals, making the system multi-functional and eliminating dedicated test equipment requirements.
2Measurement precision
If conventional BER tests are performed with manual intervention, then equipment complexity can be reduced, but measurement accuracy in detecting interference-induced degradation is insufficient
Solution Approach 1:
The system enables continuous BER monitoring during normal communication operations. By autonomously generating test signals and performing measurements without interrupting service, the system achieves continuous measurement capability that captures interference-induced degradation in real-time conditions.
Solution Approach 2:
The comparator provides continuous feedback by comparing received test signals against expected patterns, enabling precise detection of bit errors. This feedback mechanism allows the system to accurately measure interference-induced degradation and provide real-time quality assessment of the communication link.
3Productivity
If automated BER testing is implemented without satellite support, then operational disruption is reduced, but the system requires additional components such as modulator and comparator
Solution Approach 1:
The modulator and comparator components serve dual purposes: they enable autonomous BER testing while also supporting normal communication operations. This multi-functionality increases productivity by enabling automated testing without requiring completely separate dedicated test equipment.
Solution Approach 2:
The BER testing functionality is merged with the existing subscriber receiver system. The modulator, comparator, and processing components are integrated into the receiver architecture, combining testing and communication functions into a unified system that improves efficiency without adding standalone equipment.
4Adaptability or versatility
If conventional BER tests are performed manually with satellite gateway coordination, then system complexity can be minimized, but the tests cannot be conducted while maintaining active communication links
Solution Approach 1:
The subscriber receiver autonomously conducts BER tests without requiring satellite gateway coordination or manual intervention. The system independently generates test signals, performs measurements, and analyzes results, enabling testing during active communication links while maintaining operational simplicity through automated execution.
Solution Approach 2:
The system dynamically switches between normal communication mode and BER testing mode. The modulator and comparator are activated only when testing is required, allowing the system to adapt its functionality based on operational needs while maintaining ease of operation through automated mode transitions.
Data Source
AI summary
An electronic device is provided for conducting an independent bit error rate (BER) test to measure signal noise from a communication system that receives a radio frequency (RF) signal through a power combiner. The device includes a demodulator, a test bit pattern generator, a bit pattern comparator, a modulator and a computation processor. The demodulator receives the RF signal. The pattern generator provides a set bit sequence pattern. The bit pattern comparator compares the sequence pattern and the RF signal as a comparative signal. The modulator provides the sequence pattern from the generator as a carrier signal to the power combiner. The computation processor calculates BER from the comparative signal. In alternative embodiments, the generator, modulator, demodulator and comparator are combined as an efficient modem.