Performance Tolerance of IMDD DFMA PONs to Channel Frequency Response Roll-off

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The impacts of the channel frequency response roll-off effect on upstream optical OFDM transmission performance in digital filter multiple access (DFMA) passive optical networks (PONs) based on intensity modulation and direct detection (IMDD) are investigated, in terms of BER versus received optical power performance, ONU transmission capacity, ONU launch power variation (LPV) range and inter-ONU sample timing offset (STO). The effect of signal bandwidth is also explored by comparing tolerance to the channel roll-off effect for two different signal bandwidths. Over all of the aforementioned aspects, good agreements are obtained between numerical simulations and experimental measurements. The results provide important insights into channel roll-off-induced performance dependencies to facilitate cost-effective designs of both DFMA transceivers and IMDD DFMA PONs.


  • Digital signal processing, passive optical networks, digital orthogonal filters, digital filter multiple access
Original languageEnglish
Pages (from-to)1655-1658
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number19
Early online date16 Aug 2017
Publication statusPublished - 1 Oct 2017

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