Signal Processing Device for Flexible Frequency Band Splitting
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Solution Overview
Problem
Current cable communication systems face limitations in flexible and intelligent frequency band splitting for uplink and downlink signals, requiring manual changes and consuming resources, as devices can only support one frequency mixing specification, restricting signal processing capabilities.
Innovation Solution
A signal processing method and device that splits downlink signals into multiple frequency bands using a filter device equipped with a frequency mixer, attenuator, analog-to-digital converter, digital-to-analog converter, digital programmable filter, amplifier, and controller, allowing for intelligent frequency band adjustments and combinations to meet specific requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If frequency division multiplexing technology is used to separate uplink and downlink frequency bands, then signal transmission can be achieved, but the frequency band splitting is not flexible and requires manual changes
Solution Approach 1:
The patent implements dynamic frequency band splitting by using a programmable logic device that can be configured through software to automatically adjust frequency band allocations. The system dynamically adapts frequency band splitting ratios based on real-time traffic conditions and service requirements, eliminating the need for manual reconfiguration when frequency bands need to be reallocated.
Solution Approach 2:
The patent changes the fixed frequency band parameters to variable parameters by introducing a configuration module that can programmatically adjust frequency band boundaries, bandwidth allocations, and splitting ratios. This allows the system to adapt frequency band parameters according to different service scenarios and traffic patterns without manual intervention.
2Adaptability or versatility
If one frequency mixing specification is supported per device, then device complexity is reduced, but the device cannot adapt to different frequency band requirements
Solution Approach 1:
The patent implements a universal frequency mixing architecture where a single frequency mixing module can operate with multiple frequency specifications through programmable configuration. The programmable logic device is designed to handle different frequency band requirements by loading appropriate configuration parameters, making one device capable of supporting multiple frequency mixing specifications without requiring separate hardware for each specification.
Solution Approach 2:
The patent makes the frequency mixing specification dynamic by allowing the device to switch between different frequency mixing configurations based on real-time requirements. The system can dynamically adjust mixing ratios, frequency offsets, and band allocations through software control, enabling one device to adapt to various frequency mixing specifications without increasing hardware complexity.
3Productivity
If manual frequency band redivision is performed, then frequency band requirements can be met, but resources are consumed and efficiency is reduced
Solution Approach 1:
The patent implements self-service frequency band management where the system automatically monitors traffic conditions, service requirements, and frequency band utilization, then autonomously performs frequency band redivision and resource allocation. The programmable logic device self-configures frequency band parameters based on predefined policies and real-time conditions, eliminating the need for manual reconfiguration operations and reducing both time and resource consumption.
Solution Approach 2:
The patent introduces feedback mechanisms that continuously monitor system performance, traffic patterns, and frequency band utilization. Based on this feedback information, the system automatically adjusts frequency band allocations and splitting ratios in real-time, enabling rapid adaptation to changing requirements without manual intervention and improving overall signal processing efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables flexible and intelligent frequency band changes, improving signal processing efficiency and utilization, allowing for higher frequency band flexibility and adaptability in cable television systems.
Implementation Method 1
Splitting, by the frequency mixer, a downlink signal into a first downlink signal and a second downlink signal
Implementation Method 2
Attenuating, by the attenuator, the first downlink signal, thereby arriving at an attenuated first downlink signal
Implementation Method 3
Performing, by the ADC, an analog-to-digital conversion of the second downlink signal, thereby arriving at a third downlink signal
Implementation Method 4
Filtering, by the digital programmable filter, the third downlink signal to obtain a fourth downlink signal based on preset filtering rules according to a frequency requirement
Implementation Method 5
Performing, by the DAC, a digital-to-analog conversion on the fourth downlink signal to obtain a fifth downlink signal
Implementation Method 6
Combining, by the frequency combiner, the attenuated first downlink signal and the fifth downlink signal to obtain a downlink output signal
Implementation Method 7
Amplifying, by the amplifier, the downlink output signal and sending the amplified downlink output signal to a distributor
Data Source
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AI summary
A signal processing method, a related device, and an apparatus are used to intelligently change a signal frequency band according to a requirement during downlink or uplink signal transmission. The method includes: splitting a downlink signal into a first downlink signal and a second downlink signal, where the second downlink signal is a signal defined by a preset standard, and the downlink signal is an analog signal; performing an analog-to-digital conversion on the second downlink signal to obtain a third downlink signal; filtering the third downlink signal to obtain a fourth downlink signal; performing a digital-to-analog conversion on the fourth downlink signal to obtain a fifth downlink signal; and combining the first downlink signal and the fifth downlink signal to obtain a downlink output signal.