Patent ID: 7864874
Filing Date: 2011-01-04
Classification: H04L

Abstract:
1. A method for peak power reduction of an OFDM wireless communication signal, comprising: receiving an OFDM signal comprising plural symbols; splitting the OFDM signal along first and second parallel signal paths; performing a peak reduction processing on the signal in the second signal path in the time domain to derive a peak reduction signal; converting the peak reduction signal into the frequency domain; performing a processing in the frequency domain to adjust the amount of inter-symbol interference introduced by said peak reduction processing to provide an inter-symbol interference adjusted peak reduction signal; and combining the inter-symbol interference adjusted peak reduction signal with the signal on the first signal path to provide a peak power adjusted OFDM signal; wherein performing a processing in the frequency domain to adjust an amount of inter-symbol interference comprises converting the peak reduction signal from the time domain to the frequency domain and normalizing the magnitude of the peak reduction signal.