PAPR reduction via a fixed frequency-domain weighting across multiple OFDM bauds

The paper introduces a PAPR reduction technique for OFDM that uses the same PAPR reduction weights over multiple OFDM bauds. The PAPR reduction weights are applied on each subcarrier in the frequency domain and are designed to be either fixed over a group of subcarriers (in addition to multiple bauds) or parameterized by time taps. The advantage of these methods is to simplify channel estimation by not destroying the channel frequency correlation (for weights fixed over groups of subcarriers) or by increasing the effective length of the channel to be estimated (for the weights parameterized by time taps). Simulation results show up to a 6.0 dB decrease in PAPR where PAPR is measured over an OFDM baud.