Timing Synchronization via Probability Vector Training
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Solution Overview
Problem
Current techniques for timing synchronization in data transmission over communications channels face challenges in accurately identifying the first symbol of a frame, especially in stochastic channels, leading to inefficiencies in data interpretation and decoding.
Innovation Solution
A method and system that concurrently trains both the transmitter and receiver using a configuration apparatus to determine and update parameters, enabling improved symbol timing synchronization by generating probability vectors and reconfiguring the transmitter and receiver based on these updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If standardized preambles with mathematical properties are used for timing synchronization, then the receiver can identify the preamble, but timing synchronization accuracy remains insufficient in stochastic channels
Solution Approach 1:
The patent implements a feedback mechanism where the receiver's timing synchronization performance is continuously monitored and fed back to the transmitter. The transmitter then adjusts its timing parameters based on this feedback, creating a closed-loop system that progressively improves synchronization accuracy and decoding reliability through iterative optimization.
Solution Approach 2:
The patent dynamically changes transmission parameters including timing offsets, symbol durations, and preamble characteristics based on channel conditions. By adapting these parameters in response to stochastic channel variations, the system maintains optimal timing synchronization accuracy and decoding performance despite changing environmental conditions.
2Ease of operation
If the receiver attempts to identify the first symbol from received data without prior timing information, then timing synchronization can be achieved, but the process is inefficient and inaccurate
Solution Approach 1:
The patent performs preliminary timing estimation and synchronization preparation before actual data reception and decoding. By pre-configuring timing parameters, training receivers with synchronization patterns, and establishing initial timing references in advance, the system simplifies the real-time synchronization process while significantly improving identification accuracy of the first symbol.
Solution Approach 2:
The patent introduces intermediary synchronization signals and training sequences between the transmitter and receiver. These intermediary elements serve as mediators that facilitate accurate timing synchronization by providing reference points and correlation patterns that enable the receiver to precisely identify symbol boundaries without directly searching through encrypted data.
3Productivity
If conventional timing synchronization techniques are used, then data transmission can proceed, but decoding accuracy deteriorates due to timing errors
Solution Approach 1:
The patent implements dynamic timing adjustment mechanisms that continuously adapt synchronization parameters during data transmission. Rather than using fixed timing intervals, the system dynamically modifies symbol timing, frame synchronization points, and sampling rates in real-time based on detected channel conditions, maintaining both high transmission throughput and accurate decoding.
Solution Approach 2:
The patent employs feedback loops where decoding performance metrics are monitored and used to adjust timing synchronization parameters. When decoding errors are detected, the system feeds this information back to recalibrate timing offsets and synchronization points, thereby maintaining high data transmission productivity while preventing accuracy deterioration through continuous optimization.
Data Source
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AI summary
There is disclosed a system comprising a transmitter configured to transmit, via a channel, a plurality of frames that are comprised of a plurality of symbols including a preamble and one or more data symbols; and transmit, via the channel, a second plurality of frames that are comprised of a second plurality of symbols including a perturbed preamble and one or more second data symbols; a receiver configured to: receive a plurality of sequences of samples generated by the channel in response to the plurality of frames transmitted by the transmitter, wherein, for individual ones of the plurality of sequences of samples that are received, the receiver is configured to determine a probability vector assigning probabilities to the sample of a respective sequence that identify the probability that a respective sample corresponds to a particular symbol of the frame; determine, for individual ones of a plurality of second sequences of samples generated by the channel in response to transmission of corresponding ones of the second plurality of frames, a second probability vector assigning probabilities to the samples of a respective second sequence that identify the probability that a respective sample corresponds to a particular symbol of the corresponding frame; and receive an indication of the sample of the respective second sequence that corresponds to the particular symbol of the corresponding frame; at least one processor configured, for each of the plurality of sequences of samples received by the receiver, to: determine one or more updated parameters of a frame detector of the receiver, wherein the updated parameters of the frame detector of the receiver are based on the probability vector and an indication of the sample of the respective sequence that corresponds to the particular symbol of the corresponding frame; and determine one or more updated parameters of a preamble generator of the transmitter that provides the preamble for transmission over the channel based on the second probability vector and the indication of the sample of the respective second sequence that corresponds to the particular symbol of the corresponding frame, wherein the transmitter and the receiver are reconfigured based upon the one or more updated parameters of the transmitter and the receiver, respectively.