Data Modulation for PAPR Reduction in mMTC
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Solution Overview
Problem
In high-frequency communication scenarios, especially in massive machine-type communication (mMTC), the peak-to-average power ratio (PAPR) of signals sent by user equipment (UE) is high, leading to inefficiencies in power amplifiers and increased battery power consumption.
Innovation Solution
A data modulation method is introduced, which involves performing a preset modulation operation on consecutive data blocks, configuring them with the same head-end or tail-end reference signal sequences, inserting zeros between adjacent time domain data, and performing a filtering operation to reduce PAPR.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional modulation is used in high frequency scenarios, then data transmission can be achieved, but the PAPR of the signal becomes high, leading to low power amplifier efficiency and increased battery power consumption
Solution Approach 1:
The patent divides the signal transmission into multiple consecutive data blocks (B≥2), each processed independently through modulation operations. This segmentation allows for controlled manipulation of signal characteristics across blocks, enabling PAPR reduction through selective zero insertion and filtering while maintaining data transmission functionality
Solution Approach 2:
The patent introduces reference signal sequences as intermediary elements between data blocks. These reference signals (head-end and/or tail-end) serve as mediators that maintain signal integrity and enable coherent processing across segmented data blocks, facilitating PAPR reduction without compromising communication reliability
2Productivity
If PAPR is reduced through signal processing, then power amplifier efficiency improves, but signal-to-noise ratio may deteriorate in high frequency scenarios with large path losses and shadow fading
Solution Approach 1:
The patent performs preliminary modulation operations on consecutive data blocks before transmission, configuring them with reference signal sequences in advance. This preliminary structuring of the signal enables subsequent PAPR reduction processing while maintaining signal integrity, ensuring that the signal is optimally prepared for high frequency transmission conditions before encountering path losses and fading
Solution Approach 2:
The patent dynamically adjusts signal parameters including the insertion of Z zeros (Z≥0) between adjacent time domain data and applying filtering operations. These parameter changes are specifically designed to reduce PAPR while maintaining signal-to-noise ratio, allowing optimization of both power amplifier efficiency and transmission reliability in high frequency scenarios
Data Source
AI summary
A data modulation method, a communication device and a storage medium are disclosed. The data modulation method includes: performing a preset modulation operation on B consecutive data blocks, and configuring the B consecutive data blocks to have a same head-end reference signal sequence and/or a same tail-end reference signal sequence; inserting Z zeros between adjacent time domain data of the B consecutive data blocks; performing a filtering operation on the B consecutive data blocks into which Z zeros have been inserted, and transmitting the filtered data on a physical resource, where B is greater than or equal to 2 (i.e., B≥2), and Z is greater than or equal to 0 (i.e., Z≥0).