An improved diversity combining receiver for layered ACO-FOFDM in IM/DD systems

被引：2

作者：

Guo, Mengqi ^{[1
]}

Zhou, Ji ^{[1
]}

Tang, Xizi ^{[1
]}

Hu, Fan ^{[1
]}

Qi, Jia ^{[1
]}

Qiao, Yaojun ^{[1
]}

Yang, Aiying ^{[2
]}

Lu, Yueming ^{[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] Beijing Inst Technol, Sch Optoelect, Beijing 100081, Peoples R China

[3] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Key Lab Trustworthy Distributed Comp & Serv, Minist Educ, Beijing 100876, Peoples R China

来源：

PHOTONIC NETWORK COMMUNICATIONS | 2018年 / 35卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Layered asymmetrically clipped optical fast orthogonal frequency division multiplexing (ACO-FOFDM); Discrete cosine transform (DCT); Spectral efficiency; Diversity combining; Intensity-modulated and direct-detected (IM/DD) systems; OPTICAL OFDM; TRANSMISSION;

D O I：

10.1007/s11107-017-0725-9

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, an improved receiver based on diversity combining is proposed to improve the bit error rate (BER) performance of layered asymmetrically clipped optical fast orthogonal frequency division multiplexing (ACO-FOFDM) for intensity-modulated and direct-detected (IM/DD) optical transmission systems. Layered ACO-FOFDM can compensate the weakness of traditional ACO-FOFDM in low spectral efficiency, the utilization of discrete cosine transform in FOFDM system instead of fast Fourier transform in OFDM system can reduce the computational complexity without any influence on BER performance. The BER performances of layered ACO-FOFDM system with improved receiver based on diversity combining and DC-offset FOFDM (DCO-FOFDM) system with optimal DC-bias are compared at the same spectral efficiency. Simulation results show that under different optical bit energy to noise power ratios, layered ACO-FOFDM system with improved receiver has 2.86, 5.26 and 5.72 dB BER performance advantages at forward error correction limit over DCO-FOFDM system when the spectral efficiencies are 1, 2 and 3 bits/s/Hz, respectively. Layered ACO-FOFDM system with improved receiver based on diversity combining is suitable for application in the adaptive IM/DD systems with zero DC-bias.

引用

页码：187 / 194

页数：8

共 21 条

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