Experimental demonstration of a scalable transmitter frontend technique in IMDD-OFDMA-PON upstream scheme

• Propose scalable transmitter frontend technique-based OFDMA-PON upstream scheme.
• Reduce the sampling rate of DAC and the DSP scale for each ONU.
• Correct the phase deviation at OLT.

Scalable transmitter frontend scheme is proposed to reduce the sampling rate of digital-to-analog converter (DAC) and the complexity of digital signal processing (DSP) in intensity modulation and direct detection (IMDD) OFDMA-PON upstream scenarios. The hardware cost of each ONU is substantially decreased. The feasibility of the proposed scheme is experimentally demonstrated.