| 摘要 |
<p>The present invention relates to a system (200) and a method (800) for reducing a PAPR of an OFDM signal (204). The method comprises routing the OFDM signal to first and second signal processing paths (FSPP and SSPP); time delaying the OFDM signal traveling along FSPP (206); and determining whether an instantaneous signal magnitude value of the OFDM signal traveling along SSPP (208) is greater than a threshold value that would force a power amplifier (250) into a non-linear operational region. If it is determined that the instantaneous signal magnitude value is greater than the threshold value, then a magnitude of at least one complex symbol sample of the OFDM signal which has been time delayed is scaled to a level that precludes the power amplifier from entering its non-linear operational region. If it is determined that the instantaneous signal magnitude value is not greater than the threshold value, then the complex symbol sample is output without modification to the magnitude thereof.</p> |
