A hybrid PAPR reduction approach for the IM/DD optical OFDM communications

In this paper, we propose a novel hybrid peak-to-average power ratio (PAPR) reduction approach combining multi-band Jacket matrix spreading (MB-JS) with the clipping and filtering for the orthogonal frequency division multiplexing (OFDM)-based optical communication systems. The PAPR performance of the proposed scheme is theoretical analyzed and the received signal-to-noise ratio (SNR) for each split sub-band are calculated. The 50 m step-index (SI) polymer optical fiber (POF) transmission based on offline processing is adopted as a special case to evaluate the system performance and then make comparisons with some other well known PAPR reduction techniques. With the help of this methodology, at least 2.57 dB PAPR reduction is obtained and 4 dBm power savings is achieved when compared to the original OFDM transmission. It is demonstrated that the proposed scheme can offer better system performance and make a favorable trade-off among the PAPR reduction, bit error rate and computational complexity.