Experimental Demonstrations of Hybrid OFDM-Digital Filter Multiple Access PONs
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- (Latest Revised)PTL_Hybrid-DSB-OFDM-DFMA-PON
Accepted author manuscript, 624 KB, PDF document
DOI
Hybrid OFDM-digital filter multiple access (OFDM-DFMA) PONs exploit software configurable digital shaping filters in ONUs to multiplex multiple gapless OFDM channels at different radio frequencies and utilize a single FFT operation-based pipelined DSP procedure in the OLT to simultaneously de-multiplex/demodulate all OFDM signals from various ONUs without requiring any digital matching filters. In this paper, aggregated raw 30Gbit/s over 25km multipoint-to-point upstream signal transmissions of IMDD OFDM-DFMA PONs are experimentally demonstrated for the first time. Experimental results show that a reduction in ONU-embedded digital filter length from 256 to 16 just decreases the receiver sensitivity by <1dB, which are independent of ONU spectral locations. By utilizing a digital filter length as short as L=16, fibre transmission impairments (channel interference) are shown to give <1dB (<2.5dB) receiver sensitivity degradations. In addition, a >3.5dB (>5.5dB) ONU launch power dynamic range is also achievable for an aggregated upstream transmission raw capacity of 28.12Gbit/s (23.43Gbit/s).
Original language | English |
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Pages (from-to) | 751-754 |
Journal | IEEE Photonics Technology Letters |
Volume | 32 |
Issue number | 13 |
Early online date | 15 May 2020 |
DOIs | |
Publication status | Published - 1 Jul 2020 |
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