Peak to average power ratio reduction in multichannel digital front-ends (DFES)

A system comprising:

• an input processing circuit configured to generate a plurality of frequency-domain symbols;
• and
• one or more transmission circuits configured to:
• assign the plurality of frequency-domain symbols to a plurality of subcarriers associated with a multichannel transmission;
• assign the plurality of subcarriers to a plurality of channels used for the multichannel transmission, wherein a number of the plurality of channels is different than a number of the plurality of subcarriers;
• generating a plurality of time-domain signals corresponding to the plurality of channels;
• apply an adjustment to at least one of the plurality of time-domain signals, to generate a corresponding adjusted time-domain signal, wherein the adjustment is configured based on one or more characteristic associated with at least two of the plurality of frequency-domain symbols;
• and
• select between the at least one of the plurality of time-domain signals and the corresponding adjusted time-domain signal based on a particular criterion, wherein when the adjustment comprises sign inversion the particular criterion comprises lowest peak.