Mitigation techniques for Peak-to-Average Power Ratio and Optical Beat Interference in OFDMA-PONs

Optimization mechanisms in multi-dimensional and flexible PONs: challenging issues and possible solutions

“…The proposed algorithm estimated the frequency offset according to the spectrum of the received DD-OFDM signal, which makes the frequency of all data-bearing subcarriers fall into the range of OFDM signal bandwidth after performing down-conversion from radio frequency to another base-band one. The authors in [38] investigated the method of mitigating PAPR and beating interference 2 . By integrating adaptive bit loading with data clipping, the proposed algorithm improved PAPR with a long transmission distance.…”