Peak-to-average power ratio reduction of transmission signal of all-optical orthogonal time/frequency domain multiplexing using fractional Fourier transform

被引：8

作者：

Nagashima, T. ^{[1
]}

Cincotti, G. ^{[2
]}

Murakawa, T. ^{[1
]}

Shimizu, S. ^{[3
]}

Hasegawa, M. ^{[1
]}

Hattori, K. ^{[4
]}

Okuno, M. ^{[4
]}

Mino, S. ^{[4
]}

Himeno, A. ^{[4
]}

Wada, N. ^{[3
]}

Uenohara, H. ^{[5
]}

Konishi, T. ^{[1
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Osaka, Japan

[2] Univ Roma Tre, Via V Volterra 62, I-00143 Rome, Italy

[3] NICT, 4-2-1 Nukui Kitamachi, Koganei, Tokyo 1848795, Japan

[4] NTT Elect Co La, 6700-2 To, Naka, Ibaraki 3110122, Japan

[5] Tokyo Inst Technol, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan

来源：

OPTICS COMMUNICATIONS | 2017年 / 402卷

关键词：

Peak-to-average power ratio reduction; Fiber nonlinearity mitigation; Fractional OFDM; Fractional Fourier transform; Nyquist OTDM; OFDM; EFFICIENT; SYSTEMS; FIBERS;

D O I：

10.1016/j.optcom.2017.05.055

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We examine a peak-to-average power ratio (PAPR) reduction effect in an optical fiber link using a fractional Fourier transform (FrFT). Fractional OFDM (FrOFDM) based on FrFT in place of discrete Fourier transform is a multiplexing approach that can balance the pros and cons of subcarriers in the time and frequency domains while keeping its orthogonal condition. A careful investigation of the PAPR behavior of a FrOFDM signal confirms that its PAPA can be minimized at a point where a Nyquist pulse train is formed by a time-lens effect. With emphasis on this low-PAPR characteristic of a Nyquist pulse train, the signal quality degradation owing to fiber nonlinearity can be mitigated. A 1.0-dB signal quality improvement after propagation in a dispersion-compensated fiber link is demonstrated in a simulation for a 12 x 10-Gbaud/s 16 QAM FrOFDM signal in comparison with that of a conventional OFDM. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：123 / 127

页数：5

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