A High Peak-to-Average Power Ratio Reduction in OFDM Systems by Ideal N/2-shift Aperiodic Auto-Correlation Property

摘要

This paper presents a new method for Peak-to-Average Power Ratio (PAPR) reduction in Orthogonal Frequency Division Multiplex (OFDM) BPSK systems based on the auto-correlation property of the data symbol sequence. Herein it is demonstrated that a significant PAPR reduction of 6 dB, independent of the number of sub-carriers, can be achieved by assuring the appropriate auto-correlation property of transmitted data symbol sequences. Since the approach relies on redundant symbols, meeting the condition of a rate R = 0.75 complementary parity code, some degree of error correction is also achieved.