In the adaptive symbol selection scheme P signals containing the same information are created from the input data and the variant with the smallest PAPR is selected for transmission. It is possible to create these variants using P–1 interleavers followed by constellation mapping and Inverse Fast Fourier Transform (IFFT). Receiver for such system needs to calculate FFT of received signal and perform de-interleaving operation with the de-interleaver according the received side information.
The basic idea is the integration of interleavers inside IFFT block this can reduce the PAPR but at the cost of negligible decrease in the data rate