Faster-than-Nyquist non-orthogonal frequency-division multiplexing based on fractional Hartley transform

被引：28

作者：

Zhou, Ji ^{[1
]}

Qiao, Yaojun ^{[1
]}

Yang, Zhanyu ^{[2
]}

Sun, Erkun ^{[3
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

[2] Univ Virginia, Dept Elect & Comp Engn, 351 McCormick Rd, Charlottesville, VA 22904 USA

[3] ZTE Corp, Beijing 100191, Peoples R China

来源：

OPTICS LETTERS | 2016年 / 41卷 / 19期

基金：

中国国家自然科学基金;

关键词：

OPTICAL OFDM; IM/DD SYSTEMS; SCHEME;

D O I：

10.1364/OL.41.004488

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this Letter, we propose, to the best of our knowledge, the first faster-than-Nyquist non-orthogonal frequency-division multiplexing based on fractional Hartley transform (FrHT). Different from the existing NOFDM signal, the real-valued FrHT-based NOFDM signal can be directly applied to an intensity-modulated/direct-detection optical system without upconversion, and it can achieve a transmission rate faster than the Nyquist rate, which is the up limit of orthogonal frequency-division multiplexing. For example, when bandwidth compression factor a is set to 0.4, the transmission rate is 20 percent faster than the Nyquist rate. Furthermore, we demonstrate simulations and experiments to verify the feasibility of FrHT-based NOFDM. After a 25 km standard single-mode fiber transmission, the bit error rate of FrHT-based DC-offset NOFDM can achieve a 7% and 20% forward error correction limit when a is set to 0.45 and 0.4, respectively. (C) 2016 Optical Society of America

引用

页码：4488 / 4491

页数：4

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