Orthogonal Frequency Peak-to-Average Power Ratio Reduction via the Error Reduction Algorithm

High peak-to-average power ratio (PAPR) wave-forms present a challenge to radar systems in which high power amplifiers operate in saturation to increase power efficiency. In particular, the OFDM waveform is challenging in its transmission due to the constructive interference of the various sub carriers causing high crest factors. Previous works have demonstrated a marked reduction in PAPR by leveraging digital arrays, namely, utilizing the spatial complement of a set of steering vectors to not interfere with RF functions. This work investigates using waveform spectral complements to reduce PAPR and how this processing can increase the efficiency of the aforementioned spatial techniques, with particular emphasis on the OFDM waveform.