Comparison Between Different Peak-to-Average Power Ratio Reduction Techniques

Orthogonal Frequency Division Multiplexing (OFDM) leads to a high Peak-to-Average Power Ratio of the signal. This requires high power reserves at the transmitter and reduces the capabilities of impulsive noise cancellation at the receiver. To overcome this drawback, several techniques exist to lower the Peak-to-Average Power Ratio of the signal. This paper compares nine different techniques regarding their results in Peak-to-Average Power Ratio reduction, bit error rate increase, notch depth, out-of-band distortion, signal power increase, loss in data rate and computational complexity. Five techniques provide good results, but each of them has a unique drawback, so it is still required to pick the best one during individual OFDM system design.