Research on optical 32QAM-OFDM-PON access scheme with different numbers of sub-carriers using DMT modulation

An optical 32QAM-OFDM-PON system with different numbers of sub-carriers using discrete multitone (DMT) modulation and demodulation is designed and demonstrated by experiment. Electron-optic generation, directly photoelectric detection, and electrical self-mixing reception of 32QAM-OFDM downstream signals are achieved. 5Gb/s 32QAM-OFDM downlink signals with different numbers of sub-carriers are successfully transmitted over 42 km SMF-28. Peak-to average power ratio (PAPR) characteristic, computational complexity and bit error rate (BER) performance are analyzed. The results show that the sub-carriers numbers of 32QAM-OFDM downlink signals should be carefully selected according to the actual requirements, if spectral efficiency, PAPR characteristic, computational complexity and receiver sensitivity are considered.

[1]  Nan Chi,et al.  Novel centralized-light-source WDM-RoF system with OFDM-CPM downstream and OOK upstream , 2012 .

[2]  Yao Zhu,et al.  Experimental Demonstration of a WDM-RoF Based Mobile Fronthaul With f-OFDM Signals by Using Directly Modulated 3s-DBR Laser , 2019, Journal of Lightwave Technology.

[3]  Anthony Ng'oma,et al.  Volterra nonlinearity compensator for I/Q imbalanced mm-wave OFDM RoF systems , 2015, 2015 International Topical Meeting on Microwave Photonics (MWP).

[4]  William Shieh,et al.  Experimental demonstration of improved fiber nonlinearity tolerance for unique-word DFT-spread OFDM systems. , 2011, Optics express.

[5]  Yufeng Shao.  PAPR reduction and receiver sensitivity improvement in 16QAM-OFDM RoF system using DMT modulation and BTN-PS technique , 2016 .

[6]  van den Hpa Henrie Boom,et al.  High-speed transmission over multimode fiber using discrete multitone modulation , 2008 .

[7]  C. Yeh,et al.  Rayleigh Backscattering Mitigation Using Wavelength Splitting for Heterogeneous Optical Wired and Wireless Access , 2010, IEEE Photonics Technology Letters.

[8]  Houjun Wang,et al.  Phase-shift assisted OFDM-RoF transmission employing optical heterodyning , 2017, 2017 International Topical Meeting on Microwave Photonics (MWP).

[9]  Sien Chi,et al.  A Full duplex radio-over-fiber linkwith Multi-level OFDM signal via a single-electrode MZM and wavelength reuse with aRSOA. , 2010, Optics express.

[10]  Junqiang Hu,et al.  108 Gb/s OFDMA-PON With Polarization Multiplexing and Direct Detection , 2010, Journal of Lightwave Technology.

[11]  P. Shih,et al.  Optical Millimeter-Wave Signal Generation Using Frequency Quadrupling Technique and No Optical Filtering , 2008, IEEE Photonics Technology Letters.

[12]  Nan Chi,et al.  60-GHz RoF System With Low PAPR 16QAM-OFDM Downlink Using PTS Segmentation , 2013, IEEE Photonics Technology Letters.

[13]  Nan Chi,et al.  Generation of 16-QAM-OFDM Signals Using Selected Mapping Method and Its Application in Optical Millimeter-Wave Access System , 2012, IEEE Photonics Technology Letters.