Roll-Off Parameter Retrieval from Adjacent DVB-S2X Frames
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Solution Overview
Problem
Current methods are unable to retrieve alternating roll-off information in the DVB-S2X standard, which is crucial for maximizing the signal-to-noise ratio in communication systems.
Innovation Solution
A roll-off parameter determining module at the receiving terminal analyzes adjacent frames to identify roll-off information, using a register unit, determining units, and a look-up table to generate and output roll-off parameters, enabling the retrieval of alternating roll-off information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current retrieval methods are used, then the system works for DVB-S2 standard, but it cannot retrieve alternating roll-off information in DVB-S2X standard
Solution Approach 1:
The patent implements a dynamic retrieval mechanism that adapts to different data types (fixed and alternating roll-off information) by detecting frame patterns and switching retrieval modes accordingly. The system dynamically adjusts its behavior based on whether it encounters DVB-S2 or DVB-S2X standard frames, enabling versatile compatibility while maintaining reliable retrieval through context-aware mode switching.
Solution Approach 2:
The patent changes the retrieval parameters based on the detected frame type. For fixed roll-off information, it uses one set of retrieval parameters, while for alternating roll-off information in DVB-S2X, it switches to a different parameter set. This parameter adaptation allows the system to accurately retrieve roll-off information across both DVB-S2 and DVB-S2X standards without compromising reliability.
2Adaptability or versatility
If a complex retrieval mechanism is implemented to support alternating roll-off information, then DVB-S2X compatibility is achieved, but device complexity increases
Solution Approach 1:
The patent designs a universal retrieval module that can handle both fixed and alternating roll-off information types through a single integrated structure. By implementing multi-functionality within one module—capable of detecting frame types and automatically adapting its retrieval strategy—the system achieves DVB-S2X compatibility without requiring separate complex circuits for different standards, thus avoiding excessive device complexity.
Solution Approach 2:
The retrieval mechanism incorporates self-service capabilities by automatically detecting the frame type and selecting the appropriate retrieval mode without external control. The system self-adapts to whether it encounters fixed or alternating roll-off information, eliminating the need for complex external control logic and reducing overall device complexity while maintaining full DVB-S2X support.
3Measurement precision
If multiple determination units are added to handle different data types, then retrieval accuracy improves, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple determination functions into a single integrated retrieval module. Instead of implementing separate determination units for fixed and alternating roll-off information, the system combines these functions in one module that can perform both types of determination through adaptive logic. This merging approach maintains high retrieval accuracy for both DVB-S2 and DVB-S2X standards while reducing the number of discrete components, thereby lowering manufacturing costs.
Data Source
AI summary
A roll-off parameter determining module disposed at a receiving terminal is provided. The receiving terminal receives first roll-off information of a first frame and second roll-off information of a second frame. The first frame is adjacent to the second frame. The module for determining a roll-off parameter includes: a register unit; a first determining unit, determining whether one of the first roll-off information and the second roll-off information includes a first data type, and generating a first roll-off parameter indicator; a second determining unit, determining whether one of the first roll-off information and the second roll-off information includes a second data type and outputting a second roll-off parameter indicator; and a look-up table (LUT) unit, looking up an LUT according to the first roll-off parameter indicator and a second roll-off parameter indicator to output a roll-off parameter.