Research of PAPR Reducing Algorithm of OFDM System
Abstract: This thesis firstly introduces the system model and basic theory of OFDM signal, and analyzes its advantages and disadvantages. It makes deep analysis on the most popular three kinds of PAPR reducing techniques, and analysis of their respective advantages and shortcomings. By analyzing the sub-optimal PTS algorithm and the Dual Layered Phase Sequencing (DLPS) algorithm, a improved algorithm was proposed. The simulation based on Matlab shows that the algorithm can reduce the PAPR effectively as well as provide lower bit error rate (BER) and computational complexity.
Key Words: Orthogonal frequency division multiplexing; Peak-to-average power ratio; Partial transmit sequence
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