Radio Frequency Carrier Clipping For Lower PAPR
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Solution Overview
Problem
Existing communication systems face challenges in effectively performing clipping processing to suppress signal peaks and reduce peak-to-average power ratio (PAPR), which affects communication performance.
Innovation Solution
Implementing at least two clipping processing processes on a radio frequency unit side using carriers as a clipping granularity, with adaptive parameters determined by a baseband unit, to enhance clipping and filtering effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If single clipping processing is performed on carrier data, then processing complexity is reduced, but clipping effect is insufficient
Solution Approach 1:
The patent divides the clipping processing into multiple stages: first clipping processing on carrier data, then second clipping processing on the result. This segmentation allows each stage to focus on specific aspects of clipping, improving the overall clipping effect while maintaining manageable processing complexity through structured division of tasks.
Solution Approach 2:
The first clipping processing is performed as a preliminary action before the second clipping processing. This preliminary clipping stage prepares the carrier data by reducing initial peak values, which then serves as improved input for the second clipping stage, achieving better overall clipping effect through preparatory processing.
2Object-generated harmful factors
If clipping processing is performed without filtering, then processing time is reduced, but spectral spreading and out-of-band leakage increase
Solution Approach 1:
The patent segments the signal processing into distinct clipping stages and filtering stages. The first clipping processing is followed by filtering, then the second clipping processing. This segmentation allows the system to address spectral spreading and out-of-band leakage through dedicated filtering operations between clipping stages, rather than attempting to handle all issues simultaneously.
Solution Approach 2:
Filtering operations serve as intermediary steps between the clipping processing stages. These filtering operations act as mediators that process the output of the first clipping stage before it enters the second clipping stage, thereby controlling spectral spreading and out-of-band leakage while maintaining a structured processing timeline.
3Adaptability or versatility
If fixed clipping parameters are used, then device complexity is reduced, but adaptability to different carriers is insufficient
Solution Approach 1:
The patent implements dynamic parameter determination where the baseband unit determines clipping parameters adaptively based on the specific carrier characteristics. Rather than using fixed parameters, the system dynamically adjusts clipping parameters for different carriers, improving adaptability while managing complexity through centralized parameter determination at the baseband unit.
Solution Approach 2:
The baseband unit determines clipping parameters based on feedback about carrier characteristics. This feedback mechanism allows the system to adapt clipping parameters to different carriers by receiving information about carrier properties and adjusting parameters accordingly, improving versatility through informed parameter selection.
Data Source
AI summary
This application provides a communication method and a related device, to implement data processing by performing at least two clipping processing processes by using carriers as a clipping granularity in a radio frequency unit, so as to improve a clipping effect, thereby improving communication performance. In the method, a radio frequency unit determines a first parameter, and the radio frequency unit performs first clipping processing on data of a first carrier based on the first parameter, to obtain first data. In some implementation processes, the radio frequency unit performs second clipping processing based on the first data. In some implementation processes, K parameters included in the first parameter are respectively used for clipping processing of K carrier slices included in the first carrier.