Fig. 2From: Research on modified selected mapping technique for PAPR reduction and reception performance improvement in 8QAM-OFDM optical access systems8QAM-OFDM optical access system. ECL: external cavity laser. PC: polarization controller. MZM: Mach-Zehnder Modulator. EA: electrical amplifier. SMF: single mode fiber. EDFA: erbium doped fiber amplifier. PIN: positive intrinsic-negative. LPF: low pass filterBack to article page