Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets

Mumtaz Ali; Bo Dai; Xu Wang

doi:10.1109/CHINACOM.2014.7054304

Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets

Mumtaz Ali, Bo Dai, Xu Wang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In the presence of OFDM symbol time misalignment (STM) and subcarrier frequency offset (ScFO) in an all-optical orthogonal frequency division multiplexing (AO-OFDM) system, the BER performance degraded due to intercarrier interference (ICI) and intersymbol interference. In this paper, an analytical study of the impacts of ScFO and STM on BER performance of M-QAM AO-OFDM system is conducted. The numerical results of the realistic AO-OFDM system are compared with an odd-and-even and a decorrelated emulation setups for precise estimation of STM and ScFO tolerances. For BER=10^-3, maximum acceptable relative deviations for the STM and the ScFO are 3.2% and 5.5% for the realistic AO-OFDM system. Finally, the minimum requirements of cyclic prefix (CP) are evaluated, and it is demonstrated that the STM variance is reduced by 3.3 dB at half of data rate, while the 1.8 × subcarrier spacing is required to reduce the ScFO variance by 6.9 dB.

Original language	English
Title of host publication	2014 9th International Conference on Communications and Networking in China (CHINACOM)
Publisher	IEEE
Pages	293-297
Number of pages	5
ISBN (Electronic)	9781479959709
DOIs	https://doi.org/10.1109/CHINACOM.2014.7054304
Publication status	Published - 2014
Event	9th International Conference on Communications and Networking in China 2014 - Maoming, China Duration: 14 Aug 2014 → 16 Aug 2014

Conference

Conference	9th International Conference on Communications and Networking in China 2014
Abbreviated title	CHINACOM 2014
Country	China
City	Maoming
Period	14/08/14 → 16/08/14

Keywords

All-optical orthogonal frequency division multiplexing
coherent communications
optical communications

ASJC Scopus subject areas

Communication
Computer Networks and Communications

Access to Document

10.1109/CHINACOM.2014.7054304

Link to publication in Scopus

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Ali, M., Dai, B., & Wang, X. (2014). Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets. In 2014 9th International Conference on Communications and Networking in China (CHINACOM) (pp. 293-297). [7054304] IEEE. https://doi.org/10.1109/CHINACOM.2014.7054304

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title = "Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets",

abstract = "In the presence of OFDM symbol time misalignment (STM) and subcarrier frequency offset (ScFO) in an all-optical orthogonal frequency division multiplexing (AO-OFDM) system, the BER performance degraded due to intercarrier interference (ICI) and intersymbol interference. In this paper, an analytical study of the impacts of ScFO and STM on BER performance of M-QAM AO-OFDM system is conducted. The numerical results of the realistic AO-OFDM system are compared with an odd-and-even and a decorrelated emulation setups for precise estimation of STM and ScFO tolerances. For BER=10-3, maximum acceptable relative deviations for the STM and the ScFO are 3.2% and 5.5% for the realistic AO-OFDM system. Finally, the minimum requirements of cyclic prefix (CP) are evaluated, and it is demonstrated that the STM variance is reduced by 3.3 dB at half of data rate, while the 1.8 × subcarrier spacing is required to reduce the ScFO variance by 6.9 dB.",

keywords = "All-optical orthogonal frequency division multiplexing, coherent communications, optical communications",

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Ali, M, Dai, B & Wang, X 2014, Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets. in 2014 9th International Conference on Communications and Networking in China (CHINACOM)., 7054304, IEEE, pp. 293-297, 9th International Conference on Communications and Networking in China 2014, Maoming, China, 14/08/14. https://doi.org/10.1109/CHINACOM.2014.7054304

Performance evaluation of superchannels using all-optical M-QAM OFDM and coherent receiver in the presence of time and frequency offsets. / Ali, Mumtaz; Dai, Bo; Wang, Xu.

2014 9th International Conference on Communications and Networking in China (CHINACOM). IEEE, 2014. p. 293-297 7054304.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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