SLM-Based Radix FFT for PAPR Reduction in OFDM Systems

  title={SLM-Based Radix FFT for PAPR Reduction in OFDM Systems},
  author={Abolfazl Ghassemi and T. Aaron Gulliver},
  journal={2007 IEEE International Conference on Signal Processing and Communications},
A radix FFT-based selective mapping (SLM) technique for reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal is introduced. The intermediate signals within an N-point IFFT using a radix decimation in time (DIT) or decimation in frequency (DIF) IFFT algorithm are used for multiplying the phase sequences. Multiple IFFTs are then applied to the remaining stages. It is shown that DIF provides low multiplicative complexity in generating the… CONTINUE READING