Tone Reservation Technique for PAPR Reduction in OFDM Systems
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Resource Overview
This MATLAB-based simulation implements the tone reservation technique to reduce the peak-to-average power ratio (PAPR) in OFDM signals. The code demonstrates the core algorithm, calculates complementary signals using reserved subcarriers, and provides performance metrics including CCDF curves and PAPR reduction benchmarks.
Detailed Documentation
This implementation features a comprehensive OFDM system simulation with tone reservation PAPR reduction. The code generates random QAM-modulated data symbols while strategically reserving specific subcarriers for peak cancellation. Through iterative optimization, it computes the optimal cancellation signal that minimizes peak power without affecting data-bearing subcarriers. Key functions include: OFDM modulation/IFFT operations, peak detection algorithms, and gradient-based optimization for cancellation signal generation. The simulation outputs PAPR performance comparisons between original and tone reservation-enhanced OFDM signals, along with complementary cumulative distribution function (CCDF) analysis. The modular structure allows for easy experimentation with different reservation patterns, optimization thresholds, and subcarrier allocation strategies, providing a foundation for further research on adaptive tone reservation techniques and hybrid PAPR reduction methods.
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