PAPR reduction techniques in optical OFDM:A Review

Abstract

In the past few years, number of users and demand for bandwidth has increased due to increased usage of internet and real time applications like video and audio streaming and Voice over IP (VoIP). OFDM has proved to be a very reliable technique in optical communication to satisfy these needs by providing high data rates along with robustness against fiber impairments like chromatic dispersion and polarization mode dispersion. But it suffers from major problem of high peak to average power ratio. High PAPR induces nonlinearities in fibers due to Kerr effect as well as in ADC/DAC. Several techniques have been developed to combat this problem in OFDM systems. This paper reviews some of most common and recently developed PAPR reduction techniques in optical OFDM systems.