GFDM-OFDM Hybrid Modulation Scheme for IM-DD Optical Communication Systems

We propose and demonstrate a novel modulation scheme termed as generalized frequency division multiplexing - orthogonal frequency division multiplexing (GFDM-OFDM) for intensity-modulated direct-detection (IM-DD) optical communication systems. In our scheme, the low-frequency band is allocated to a GFDM signal to achieve a low peak-to-average power ratio (PAPR), while the high-frequency band is filled with an OFDM signal that is robust to frequency-domain variations. By this means, the PAPR of the whole signal can be reduced and the high-frequency fading effects induced by the electronic components can be mitigated, leading to an improved system performance. Simulation results show that our proposed GFDM-OFDM format outperforms OFDM and GFDM formats in terms of optical receiver sensitivity for both the back-to-back (BTB) and 10-km transmissions. The GFDM-OFDM signal achieves receiver sensitivity improvements of approximately 3.0 dB and 1.6 dB, compared to the OFDM and GFDM signals, respectively.

[1]  Gerhard Fettweis,et al.  Precoded GFDM transceiver with low complexity time domain processing , 2016, EURASIP J. Wirel. Commun. Netw..

[2]  Ilya Lyubomirsky,et al.  112 Gb/s transmission with a directly-modulated laser using FFT-based synthesis of orthogonal PAM and DMT signals. , 2015, Optics express.

[3]  Xiang Liu,et al.  Optical OFDM: A promising high-speed optical transport technology , 2009 .

[4]  Yikai Su,et al.  SQNR Improvement Enabled by Nonuniform DAC Output Levels for IM-DD OFDM Systems , 2017, IEEE Photonics Journal.

[5]  Linda Doyle,et al.  Low-Complexity Modem Design for GFDM , 2015, IEEE Transactions on Signal Processing.

[6]  Nicola Marchetti,et al.  Investigation of the performance of GFDMA and OFDMA for spectrally efficient broadband PONs , 2017, 2017 Optical Fiber Communications Conference and Exhibition (OFC).

[7]  Gerhard Fettweis,et al.  Generalized Frequency Division Multiplexing in a Gabor Transform Setting , 2014, IEEE Communications Letters.

[8]  Gerhard Fettweis,et al.  Generalized Frequency Division Multiplexing for 5th Generation Cellular Networks , 2014, IEEE Transactions on Communications.

[9]  Zeeshan Babar,et al.  Influence of Pulse Shaping Filters on PAPR Performance of Underwater 5G Communication System Technique: GFDM , 2017, Wirel. Commun. Mob. Comput..

[10]  Shuichi Ohno,et al.  Performance of Single-Carrier Block Transmissions Over Multipath Fading Channels With Linear Equalization , 2006, IEEE Transactions on Signal Processing.

[11]  K. K. Gupta,et al.  GFDM performance in terms of BER, PAPR and OOB and comparison to OFDM system , 2016, ICCS 2016.

[12]  Masahito Tomizawa,et al.  High-capacity optical transport networks , 2012, IEEE Communications Magazine.

[13]  Shuichi Ohno.  Performance of Single-Carrier Block Transmissions Over Multipath Fading Channels With Linear Equalization , 2006, IEEE Trans. Signal Process..

[14]  Gerhard Fettweis,et al.  Generalized frequency division multiplexing: Analysis of an alternative multi-carrier technique for next generation cellular systems , 2012, 2012 International Symposium on Wireless Communication Systems (ISWCS).

[15]  J. Yu,et al.  Analysis of Noise Spread in Optical DFT-S OFDM Systems , 2012, Journal of Lightwave Technology.

[16]  Ilya Lyubomirsky,et al.  Single-Channel 50G and 100G Discrete Multitone Transmission With 25G VCSEL Technology , 2015, Journal of Lightwave Technology.

[17]  Gerhard Fettweis,et al.  Low peak-to-average power ratio for next generation cellular systems with generalized frequency division multiplexing , 2013, 2013 International Symposium on Intelligent Signal Processing and Communication Systems.

[18]  Jie Liu,et al.  Advanced modulation formats for short reach optical communication systems , 2013, IEEE Network.

[19]  Yikai Su,et al.  Sensitivity improvement in IM-DD OFDM-PON by amplitude scaling and subcarrier enabled PAPR reduction , 2017, 2017 Conference on Lasers and Electro-Optics (CLEO).

[20]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[21]  Sebastian Randel,et al.  Advanced Modulation Schemes for Short-Range Optical Communications , 2010, IEEE Journal of Selected Topics in Quantum Electronics.