Power Line Data Transmission Frame Structure and BPSK Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power line communication modes are unstable due to noise issues, making them unsuitable for large data transmission.
Innovation Solution
A data transmission method and apparatus that encapsulates data in a specific frame format, including a preamble, frame synchronization signal, address, data, check, and postamble fields, and uses BPSK encoding and modulation, with predetermined byte lengths and gap durations to enhance stability and noise reduction, allowing for reliable data transmission over power lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing power line communication modes are used, then data transmission can be performed, but the transmission stability deteriorates due to noise problems
Solution Approach 1:
The data transmission is segmented into distinct frame structures with predefined fields including synchronization fields, address fields, data fields, and check fields. Each segment serves a specific function to ensure reliable transmission despite noise interference on power lines.
Solution Approach 2:
Synchronization signals and check fields are prepared in advance within the frame structure before actual data transmission. The synchronization field is preliminarily established to enable receiver alignment, and check fields are pre-configured for error detection, allowing the system to proactively counteract noise effects.
2Reliability
If structured frame format with BPSK modulation is used, then transmission stability improves, but device complexity increases
Solution Approach 1:
The system employs BPSK (Binary Phase Shift Keying) modulation which changes the phase parameter of the carrier signal to represent binary data. This parameter-based approach provides robust transmission stability through phase variation while maintaining relatively simple implementation compared to more complex modulation schemes.
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 fast and stable data communication on power lines with low costs by reducing noise interference and ensuring reliable data integrity through the use of a structured frame format and BPSK modulation.
Implementation Method 1
encoding and modulating the to-be-transmitted data frame in accordance with BPSK
Data Source
AI summary
The present disclosure provides a data transmission method and apparatus. The method includes: obtaining to-be-transmitted data; putting the to-be-transmitted data into a to-be-transmitted data field with a fourth predetermined number of Bytes in a first predetermined frame format for encapsulation, to obtain a to-be-transmitted data frame, the first predetermined frame format sequentially including a first permeable field, a frame synchronization signal field, an address field, the to-be-transmitted data field, a check field, a first postamble field, and a first predetermined gap field; encoding and modulating the to-be-transmitted data frame in accordance with BPSK, and then transmitting the to-be-transmitted data frame; and demodulating and decoding in accordance with the BPSK to obtain an ACK signal.