Pulse Symbol Modulation Using Quantity, Position, and Amplitude
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The band utilization rate of existing information bit modulation methods, such as Pulse Amplitude Modulation (PAM) and Pulse Position Modulation (PPM), is low.
Innovation Solution
Modulating the information bit to the pulse quantity, pulse position permutation and combination, and pulse amplitude to generate a modulation symbol, thereby enhancing the band utilization rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only pulse amplitude or only pulse position is used for modulation, then the modulation scheme is simple, but the band utilization rate is low
Solution Approach 1:
The patent transitions from single-dimension modulation (amplitude or position only) to multi-dimensional modulation by simultaneously utilizing pulse quantity, pulse position permutation and combination, and pulse amplitude. This dimensional expansion allows multiple information bits to be modulated onto a single pulse signal, thereby improving band utilization rate while maintaining manageable system complexity through structured mapping relationships.
2Productivity
If multiple pulse parameters are used for modulation, then the band utilization rate is improved, but the modulation complexity increases
Solution Approach 1:
The patent segments the information bits into multiple groups that are respectively mapped to different pulse parameters (pulse quantity, pulse position permutation and combination, pulse amplitude). This segmentation allows the complex modulation task to be divided into manageable sub-tasks, each handling a specific parameter, thereby reducing overall modulation complexity while achieving high band utilization through multi-parameter modulation.
Solution Approach 2:
The patent employs multi-dimensional modulation by simultaneously varying pulse quantity, pulse position permutation and combination, and pulse amplitude. Each dimension carries a portion of the information bits, and the structured mapping relationships between bits and parameters enable efficient encoding that improves band utilization while keeping the system complexity manageable through organized parameter management.
Data Source
Figure 1~2
Figure 3~5
Figure 6~7
AI summary
This application provides an information bit modulation method, a demodulation method, a device, and a storage medium. This application pertains to the field of communication technologies. The information bit modulation method, the demodulation method, the device, and the storage medium in embodiments of this application include: A transmit end modulates an information bit to a pulse quantity, a pulse position permutation and combination, and a pulse amplitude, to generate a corresponding modulation symbol. The transmit end transmits the modulation symbol.