A Comparison of Peak to Average Power Reduction Schemes for OFDM

In this paper we are introduced newly but powerful and less noisy peak to average power reduction techniques for Orthogonal Frequency Division Multiplexing (OFDM). These two techniques are comparing and show its results. One investigated technique is Threshold selected mapping (TSLM).In this scheme the transmitted signal is minimum PAPR by thresholding a selected signal from a set of signals and the another investigated technique is modernized selected mapping (MSLM). In this scheme the transmit signal is separate in two part real and imaginary then selected from minimum PAR of each set of signals. This real and imaginary combined. They both techniques introduce some computational complexity. The comparisons of TSLM and MSLM schemes are by simulation results.