Frame Synchronization Using Convolution Correlation to Prevent Throughput Loss
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Solution Overview
Problem
Frame synchronization in data transmission systems often results in undetection or false detection of known signals, leading to reduced data throughput due to the need for increased known signals to prevent errors.
Innovation Solution
A receiver and transmitter system that uses a convolution arithmetic operation with a known correlation sequence to enhance frame synchronization performance without reducing throughput, by determining the correlation sequence based on the peak value of cross-correlation between signal sequences in the preamble and frame synchronization signal sequences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the number of known signals is increased to extend the preamble to prevent undetection or false detection, then frame synchronization reliability is improved, but data throughput decreases due to reduced payload region
Solution Approach 1:
The patent applies partial action by using only N specific known signal sequences (where N is less than the total available sequences) to form the frame synchronization signal sequence. This partial usage achieves sufficient synchronization reliability without unnecessarily extending the preamble length, thereby preserving more payload region and maintaining data throughput.
Solution Approach 2:
The patent changes the parameter of known signal sequence selection by using N specific sequences with predetermined properties rather than arbitrarily increasing the number of sequences. This parameter optimization allows achieving reliable detection with fewer sequences, balancing synchronization performance and throughput requirements.
2Measurement precision
If cross-correlation calculation is performed between received signal and frame synchronization signal sequence, then frame detection accuracy is improved, but detection time increases due to computational complexity
Solution Approach 1:
The patent performs preliminary action by pre-calculating and storing the known correlation sequence based on the frame synchronization signal sequence before actual frame detection. This pre-computation stores correlation results that can be quickly referenced during detection, reducing real-time computational burden while maintaining detection accuracy.
Solution Approach 2:
The patent uses copying by creating a known correlation sequence that represents the correlation characteristics of the frame synchronization signal sequence. Instead of performing full cross-correlation calculations during detection, the system uses this pre-computed correlation sequence as a reference pattern, significantly reducing detection time while preserving accuracy.
Data Source
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AI summary
The present technology relates to a receiver, a frame synchronization method, a transmitter, a transmission method, and a program that allows for enhancing frame synchronization performance without reducing throughput. A receiver of an aspect of the present technology receives signals of a frame having a preamble including a frame detection signal sequence formed by a repetition of a known signal sequence, followed by a frame synchronization signal sequence formed by the known signal sequence or an inverse sequence thereof, performs convolution arithmetic operation of a known correlation sequence and cross-correlation between a received signal sequence and the frame synchronization signal sequence, and ensures synchronization of the frame while regarding predetermined time when a value more than or equal to a threshold value or a maximum value is obtained as a result of the convolution arithmetic operation as reception time of a last signal sequence that forms the frame synchronization signal sequence. The present technology can be applied to a device that transmits and receives data.