PAPR Reduction Using Fireworks Search Optimization Algorithm in MIMO-OFDM Systems

Figure 7

Power Spectral Density comparison performance of an OFDM signal without and with the proposed method. (a, b) 7 dB from saturation point (moderate nonlinearity) and (c, d) 1 dB from saturation point (severe nonlinearity). (a) Without PTS-dynFWA-DPD, (b) with PTS-dynFWA-DPD, (c) without PTS-dynFWA-DPD, and (d) with PTS-dynFWA-DPD.

(a)

(b)

(c)

(d)