Receiver Timing Calibration for High-Speed Signal Decoding
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Solution Overview
Problem
High-speed data transmission systems face signal degradation due to limited communication channel bandwidth and interference, leading to reduced signal quality and increased bit error rates.
Innovation Solution
A receiver is designed with a decoding circuit that converts data signals into first and second signals with a specific time difference, calibrated using a calibration circuit based on a reference timing signal to set a probability ratio, improving signal integrity and reducing bit error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed data transmission is implemented, then data transmission speed is improved, but signal quality deteriorates due to bandwidth limitations and interference
Solution Approach 1:
The patent applies preliminary action by performing calibration of receiver parameters before actual high-speed data transmission. The calibration circuit pre-adjusts timing and amplitude parameters using calibration signals, ensuring optimal signal reception conditions are established in advance. This prevents signal quality degradation during high-speed operation by preparing the receiver with correct parameters beforehand.
Solution Approach 2:
The patent implements parameter changes by dynamically adjusting receiver parameters such as timing offset and amplitude scaling factors. The calibration circuit modifies these parameters based on calibration results, transforming the receiver's operational characteristics to match the actual channel conditions. This enables the system to maintain high transmission speeds while adapting parameters to compensate for signal degradation.
2Measurement precision
If receiver parameters are calibrated to improve signal quality, then measurement precision is improved, but device complexity increases due to additional calibration circuits
Solution Approach 1:
The patent applies merging by integrating the calibration circuit functionality within the existing receiver structure. The calibration circuit shares resources with the main data reception path, and calibration signals are multiplexed with data signals. This consolidation achieves precise parameter calibration while minimizing additional hardware complexity by combining functions rather than adding separate independent systems.
Solution Approach 2:
The patent implements self-service through automatic calibration where the receiver calibrates itself without external intervention. The calibration circuit autonomously generates calibration signals, measures receiver performance, determines optimal parameters, and applies corrections automatically. This self-calibration mechanism achieves high measurement precision while reducing overall system complexity by eliminating the need for external calibration equipment or manual adjustment.
3Reliability
If calibration is performed to reduce bit error rates, then reliability is improved, but loss of time occurs during calibration process
Solution Approach 1:
The patent applies preliminary action by performing calibration before normal data transmission begins. The calibration phase is executed in advance to establish optimal receiver parameters, ensuring that when actual data transmission starts, the receiver is already optimized for minimum bit error rates. This upfront calibration time investment prevents ongoing errors that would require retransmission and correction.
Solution Approach 2:
The patent implements periodic action by scheduling calibration operations at regular intervals or at specific triggers during operation. Rather than continuous calibration, the system performs calibration periodically to maintain reliability while minimizing time loss. This approach balances the need for accurate parameter adjustment with the requirement to maximize productive data transmission time.
Data Source
AI summary
A receiver includes a decoding circuit configured to convert a data signal into first and second signals having a time difference therebetween, which is a function of at least one parameter, and output decoded data based on the first signal and the second signal. A calibration circuit is provided, which is configured to calibrate a value of the at least one parameter based on one of the first signal and the second signal, and a reference timing signal, and provide a calibration signal including the calibrated value to the decoding circuit. The reference timing signal may have a reference timing that sets a ratio between a first probability and a second probability as an integer ratio.


