Abstract
Filter bank multi-carrier (FBMC) using offset quadrature amplitude modulation (OQAM) has recently attracted increasing interests for the next-generation high-speed optical transmission systems, due to the salient FBMC modulation advantages in terms of high spectrum efficiency by completely removing the cyclic prefix. However, high peak-to-average power ratio (PAPR) still plays a key role of constraining the performance of FBMC systems. In this paper, we investigate a single sideband (SSB) pruned discrete Fourier transform (DFT)-spread FBMC for direct-detection (DD) passive optical network systems (PONs). It is demonstrated that the PAPR of the SSB pruned DFT-spread FBMC signal with the overlapping factor of 1.56 outperforms the conventional FBMC signal and the simple DFT-spread FBMC signal by ∼2 dB and 1 dB at the complementary cumulative distribution function (CCDF) of 1 × 10−3, respectively. Finally, by using the pruned DFT-spread FBMC with low PAPR, the aggregate data rate of 50-Gbit/s can be achieved after 50-km single mode fiber (SMF) transmission below the 7% hard decision forward-error correction (HD-FEC) threshold in the DD PONs.
Highlights
Driven by the emerging bandwidth-hungry applications such as high-definition video (HDV), cloud computing and 5G mobile fronthaul (MFH) networks, many researchers are expecting to increase the overall network capacity and enhance the transmission performance of the generation access network [1]–[4] in a cost-effective manner
Extensive performance comparisons have been made by Saljoghei et al between filter bank multicarrier (FBMC) and orthogonal frequency division multiplexing (OFDM) in multiple access uplink Passive optical networks (PONs) [23], and the results show that FBMC is a more promising signal format due to its unique features of loosening requirements on synchronization, suppression of out-of-band interference and free from cyclic prefix
We have investigated the single sideband (SSB) pruned discrete Fourier transform (DFT)-spread FBMC signal with low peak-to-average power ratio (PAPR) in DDPONs
Summary
Driven by the emerging bandwidth-hungry applications such as high-definition video (HDV), cloud computing and 5G mobile fronthaul (MFH) networks, many researchers are expecting to increase the overall network capacity and enhance the transmission performance of the generation access network [1]–[4] in a cost-effective manner. Lots of researchers have paid extensive efforts to propose and upgrade many advanced modulation techniques for achieving higher spectral-efficiency (SE) in optical transmission systems, such as quadrature amplitude modulation (QAM) subcarrier modulation [10]–[14], carrier-less amplitude and phase (CAP) modulation [15]–[18], orthogonal frequency division multiplexing (OFDM) [18]–[20] and filter bank multicarrier (FBMC) modulation [21]–[23] Among those modulation techniques, multicarrier OFDM and FBMC have gained the favor due to their salient features in terms of high SE, excellent network flexibility and adaptability as well as strong system robustness to the transmission impairments such as chromatic dispersion (CD).
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