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 |
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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 | |
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 |
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Abbreviated title | CHINACOM 2014 |
Country/Territory | 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