Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm

Jie Su; Xinying Li; Jianjun Yu

doi:10.3788/COL201614.050608

Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm

Jie Su^*, Xinying Li, Jianjun Yu

^*Corresponding author for this work

Fudan University

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We experimentally demonstrate a direct-detection orthogonal-frequency-division-multiplexing quadraturephase-shift-keying (OFDM-QPSK) system that is capable of delivering a 32 Gbaud OFDM-QPSK signal over 7 km single-mode fiber-28 (SMF-28). Intra-symbol frequency-domain averaging (ISFA) channel response estimation is applied to suppress in-band noise, while discrete Fourier transform-spread (DFT-spread) is used to reduce the peak-to-average power ratio (PAPR) of the transmitted OFDM signal. With the aid of ISFA-based channel estimation and PAPR reduction enabled by DFT-spread, the bit-error ratio of the system after 7 km SMF-28 transmission can be improved from 2×10^-3 to error-free when the received optical power is -8.5 dBm.

Original language	English
Article number	050608
Journal	Chinese Optics Letters
Volume	14
Issue number	5
DOIs	https://doi.org/10.3788/COL201614.050608
Publication status	Published - 10 May 2016
Externally published	Yes

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title = "Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm",

abstract = "We experimentally demonstrate a direct-detection orthogonal-frequency-division-multiplexing quadraturephase-shift-keying (OFDM-QPSK) system that is capable of delivering a 32 Gbaud OFDM-QPSK signal over 7 km single-mode fiber-28 (SMF-28). Intra-symbol frequency-domain averaging (ISFA) channel response estimation is applied to suppress in-band noise, while discrete Fourier transform-spread (DFT-spread) is used to reduce the peak-to-average power ratio (PAPR) of the transmitted OFDM signal. With the aid of ISFA-based channel estimation and PAPR reduction enabled by DFT-spread, the bit-error ratio of the system after 7 km SMF-28 transmission can be improved from 2×10-3 to error-free when the received optical power is -8.5 dBm.",

author = "Jie Su and Xinying Li and Jianjun Yu",

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AB - We experimentally demonstrate a direct-detection orthogonal-frequency-division-multiplexing quadraturephase-shift-keying (OFDM-QPSK) system that is capable of delivering a 32 Gbaud OFDM-QPSK signal over 7 km single-mode fiber-28 (SMF-28). Intra-symbol frequency-domain averaging (ISFA) channel response estimation is applied to suppress in-band noise, while discrete Fourier transform-spread (DFT-spread) is used to reduce the peak-to-average power ratio (PAPR) of the transmitted OFDM signal. With the aid of ISFA-based channel estimation and PAPR reduction enabled by DFT-spread, the bit-error ratio of the system after 7 km SMF-28 transmission can be improved from 2×10-3 to error-free when the received optical power is -8.5 dBm.

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Direct-detection OFDM-QPSK system performance improvement enabled by DFT spread and receiver-based ISFA algorithm

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