ABSTRACT

One of the major disadvantages of orthogonal frequency division multiplexing (OFDM) is high peak-to-average power ratio (PAPR), which may overload the power amplifier and cause in-band distortion and out-of-band radiation. The in-band distortion increases the bit error rate (BER) and the out-of-band radiation results in the unacceptable adjacent channel interference. To reduce the PAPR, several schemes have been proposed, such as clipping, coding, peak windowing, and tone reservation [40,49,63,64]. Unfortunately, most of these schemes are unable to achieve significant reduction in PAPR with low complexity and low coding overhead and without performance degradation.