Peak-to-Average Power Ratio Reduction Using Clipping Method in OFDM Systems

In OFDM systems, the clipping method is employed to reduce the Peak-to-Average Power Ratio (PAPR). This technique processes signals through amplitude limiting, constraining signal amplitudes within a specified range to control peak power levels. Our documentation provides comprehensive flowcharts and MATLAB source code to demonstrate how the clipping method optimizes OFDM system performance. The MATLAB implementation includes key functions for signal amplitude analysis and threshold-based clipping operations, featuring algorithm parameters such as clipping ratio and threshold voltage settings. The clipping method represents a fundamental signal processing technique particularly suitable for scenarios requiring amplitude control. Through clipping processing, we can reduce the signal's dynamic range, thereby lowering PAPR. This significantly enhances system power efficiency and interference resistance. The code implementation features real-time amplitude monitoring and adaptive threshold adjustment mechanisms to maintain signal integrity while achieving PAPR reduction. When applying the clipping method, appropriate clipping parameters must be selected based on system requirements and signal characteristics. Generally, smaller clipping parameters yield more significant PAPR reduction but may impact signal quality. The MATLAB code includes parameter optimization modules allowing users to balance performance trade-offs through adjustable clipping thresholds and oversampling factors. Systematic tuning and debugging are essential to achieve optimal performance and signal quality. Through the provided flowcharts and MATLAB source code, you can thoroughly understand the clipping method's application process in OFDM systems. The modular code structure enables customization and optimization according to specific requirements, featuring commented sections for algorithm modification and performance testing. These resources are designed to support your research and development efforts with practical implementation guidance.