Blind I/Q imbalance and nonlinear ISI mitigation in Nyquist-SCM direct detection system with cascaded widely linear and Volterra equalizer

被引：8

作者：

Liu, Na ^{[1
]}

Ju, Cheng ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, POB 128,10 XiTuCheng Rd, Beijing 100876, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2018年 / 409卷

基金：

中国国家自然科学基金;

关键词：

I/Q imbalance; Nonlinear ISI; Widely linear equalizer; Volterra equalizer; Nyquist-SCM;

D O I：

10.1016/j.optcom.2017.09.045

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Nyquist-SCM signal after fiber transmission, direct detection (DD), and analog down-conversion suffers from linear ISI, nonlinear ISI, and I/Q imbalance, simultaneously. Theoretical analysis based on widely linear (WL) and Volterra series is given to explain the relationship and interaction of these three interferences. A blind equalization algorithm, cascaded WL and Volterra equalizer, is designed to mitigate these three interferences. Furthermore, the feasibility of the proposed cascaded algorithm is experimentally demonstrated based on a 40-Gbps data rate 16-quadrature amplitude modulation (QAM) virtual single sideband (VSSB) Nyquist-SCM DD system over 100-km standard single mode fiber (SSMF) transmission. In addition, the performances of conventional strictly linear equalizer, WL equalizer, Volterra equalizer, and cascaded WL and Volterra equalizer are experimentally evaluated, respectively. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：94 / 98

页数：5

共 18 条

[1] Complex-Valued Signal Processing: The Proper Way to Deal With Impropriety
Adali, Tulay
Schreier, Peter J.
Scharf, Louis L.
[J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2011, 59 (11) : 5101 - 5125
[2] [Anonymous], P OPT FIB COMM C
[3] Widely Linear Equalization for IQ Imbalance and Skew Compensation in Optical Coherent Receivers
da Silva, Edson Porto
Zibar, Darko
[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 2016, 34 (15) : 3577 - 3586
[4] Compensation for In-Phase/Quadrature Imbalance in Coherent-Receiver Front End for Optical Quadrature Amplitude Modulation
Faruk, Md. Saifuddin
Kikuchi, Kazuro
[J]. IEEE PHOTONICS JOURNAL, 2013, 5 (02):
[5] SELF-RECOVERING EQUALIZATION AND CARRIER TRACKING IN TWO-DIMENSIONAL DATA COMMUNICATION-SYSTEMS
GODARD, DN
[J]. IEEE TRANSACTIONS ON COMMUNICATIONS, 1980, 28 (11) : 1867 - 1875
[6] Haykin S., 2001, ADAPTIVE FILTER THEO
[7] Transceiver I/Q Imbalance Self-Calibration With Phase-Shifted Local Loopback for Multichannel Microwave Backhaul
Huang, Xiaojing
Guo, Y. Jay
Zhang, Jian A.
[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2016, 15 (11) : 7657 - 7669
[8] Ishihara Koichi, 2008, P EUR C EXH OPT COMM
[9] SSBI Mitigation in A-RF-Tone-Based VSSB-OFDM System With a Frequency-Domain Volterra Series Equalizer
Ju, Cheng
Liu, Na
Chen, Xue
Zhang, Zhiguo
[J]. JOURNAL OF LIGHTWAVE TECHNOLOGY, 2015, 33 (23) : 4997 - 5006
[10] Karar Abdullah S., 2012, P EUR C EXH OPT COMM

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