UWB Data Transmission Mapping Pulse Positions
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Solution Overview
Problem
Current ultra-wideband (UWB) technology has a low data transmission rate, which is insufficient for high-rate application scenarios, necessitating an enhancement in data transmission performance.
Innovation Solution
A data transmission method and apparatus that maps to-be-transmitted data bits to first data bits using a mapping relationship, such as a Hadamard matrix or linear block codes like Hamming and SECDED codes, to improve transmission rate and performance by encoding and modulating data in a pulse form.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional pulse position and polarity modulation is used in UWB technology, then the system maintains simplicity in modulation method, but the data transmission rate remains low and cannot adapt to high-rate application scenarios
Solution Approach 1:
The patent changes the modulation parameters by mapping data bits to multiple pulse positions and polarities simultaneously. Instead of using single pulse position and polarity for one data bit, the invention maps multiple data bits to combinations of pulse positions (e.g., first, second, third pulses) and polarities (positive or negative), thereby increasing the information capacity per pulse sequence while maintaining the fundamental pulse-based modulation approach
Solution Approach 2:
The patent introduces an additional dimension to the modulation scheme by combining pulse position modulation with pulse polarity modulation. Rather than varying only position or only polarity, the invention utilizes both dimensions simultaneously - data bits are mapped to specific combinations of pulse positions and their corresponding polarities, effectively doubling the modulation space and increasing transmission rate
2Reliability
If pulse position and polarity modulation is used, then the modulation method remains simple to implement, but error correction capability is insufficient for robust communication
Solution Approach 1:
The patent applies error correction coding (such as Hamming codes or SECDED codes) to the data bits before they are mapped to pulse positions and polarities. This preliminary encoding step adds redundancy to the data sequence, enabling the receiver to detect and correct errors that may occur during transmission, thereby enhancing reliability before the actual modulation process
Solution Approach 2:
The patent introduces error correction codes as an intermediary layer between the data source and the pulse modulation process. The coding scheme acts as a mediator that transforms raw data bits into encoded sequences with built-in error detection and correction capabilities, which are then mapped to pulse patterns. This intermediary coding layer protects the data without requiring changes to the fundamental pulse transmission mechanism
Data Source
AI summary
An example data transmission method includes: generating a physical layer protocol data unit (PPDU), where the PPDU includes a physical layer payload field, the physical layer payload field is used to carry a first data bit, and the first data bit is determined based on a first mapping relationship and a to-be-transmitted data bit; and sending the PPDU. The data transmission method can improve a data transmission rate and enhance transmission performance of a system. A corresponding example data receiving method, and apparatuses are also described.