OFDM signals have a higher

OFDMⁱ signals have a higher peak-to-average ratio (PAR)—often called a peak-to-average power ratio (PAPRⁱ)—than single-carrier signals do. The reason is that in the time domain, a multicarrier signal is the sum of many narrowband signals. At some time instances, this sum is large and at other times is small, which means that the peak value of the signal is substantially larger than the average value.

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Pankaj