J. Eur. Opt. Soc.-Rapid Publ.
Volume 16, Number 1, 2020
|Number of page(s)||5|
|Published online||06 May 2020|
Research on optical 32QAM-OFDM-PON access scheme with different numbers of sub-carriers using DMT modulation
College of Electronic and Information Engineering, Chongqing Three Gorges University, 404100, Chongqing, China
Accepted: 23 April 2020
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.
Key words: PON / 32QAM-OFDM / DMT / PAPR / BER
© The Author(s) 2020
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