Real-time experimental demonstration of a computationally efficient hybrid OFDM DFMA PON

This paper presents the first real-time experimental demonstration of a hybrid OFDM DFMA PON. The presented PON is validated for two channels (I or Q) occupying subwavelength bands. eliminates need dedicated matching filter at receiver each individual channel, by employing single FFT operation to recover all channels, thereby achieving lower computational complexity. used in conjunction with joint sideband processing technique, when compared under exact same operating conditions, shown offer increased performance, including received optical power up 1.2 dB adopted FEC limit given bit rate. experimentally demonstrated also proven be significantly more tolerant symbol timing offset effect OLT receiver. Furthermore, PON’s receiver, implemented FFT-based operate drastically reduced logic clock rate and DSP thus have numerous advantages over