DocumentCode :
67586
Title :
Fiber Nonlinearity Tolerance of APSK Modulated DFT-S OFDM Systems
Author :
Xiang Li ; Wen-De Zhong ; Alphones, Arokiaswami ; Changyuan Yu
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Volume :
25
Issue :
23
fYear :
2013
fDate :
Dec.1, 2013
Firstpage :
2304
Lastpage :
2307
Abstract :
Discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S OFDM) was proposed in coherent optical OFDM (CO-OFDM) to improve the fiber nonlinearity tolerance in CO-OFDM transmission systems. In this letter, we propose to apply amplitude phase shift keying (APSK) modulation in DFT-S OFDM to further improve the fiber nonlinearity tolerance. We investigate the effects of several parameters on the transmission performance to determine the optimal values of these parameters. Compared with 16 quadrature amplitude modulation modulated DFT-S OFDM and 16-APSK (4 and 12 constellation points in the respective first and second rings) modulated CO-OFDM, the optimized 16-APSK (6 and 10 constellation points in the respective first and second rings) modulated DFT-S OFDM extends the maximum transmission reach by ~ 12% and ~ 19% for both nondispersion managed and dispersion managed links, respectively.
Keywords :
Fourier transform optics; OFDM modulation; discrete Fourier transforms; nonlinear optics; optical fibre communication; optical fibre dispersion; optical modulation; quadrature amplitude modulation; quadrature phase shift keying; APSK modulated DFT-S OFDM systems; CO-OFDM transmission systems; amplitude phase shift keying modulation; coherent optical OFDM; constellation points; discrete Fourier transform spread orthogonal frequency division multiplexing; dispersion managed links; fiber nonlinearity tolerance; quadrature amplitude modulation; OFDM; Optical fiber communication; Optical fiber dispersion; Optical fibers; Phase shift keying; Orthogonal frequency division multiplexing (OFDM); amplitude phase shift keying (APSK); quadrature amplitude modulation (QAM);
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2013.2285396
Filename :
6648388
Link To Document :
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