Precoding for PAPR Reduction in UW-OFDM

Unique Word Orthogonal Frequency Division multiplexing (UW-OFDM) is a variant of the multicarrier technique that has shown better bit error performance compared to cyclic prefixed (CP-)OFDM. Like other techniques, UW-OFDM suffers from high peak-to-average-power ratio (PAPR) problem, which an obstacle ahead practical implementation UW-OFDM. In this letter, generator matrix, inherent UW-OFDM, not only used create specific system, but also reduce PAPR. To do so, suitable optimization problem developed, and solved using Procrustes method. The main advantage proposed method built-in matrix should be calculated once for each system setting, PAPR reduction (PAPR-R) achieved without any overhead redundancy. Simulation results are provided evaluating PAPR-R