QAM Vector Signal Generation by Optical Carrier Suppression and Precoding Techniques

被引：85

作者：

Li, Xinying ^{[1
]}

Yu, Jianjun ^{[2
]}

Zhang, Junwen ^{[1
]}

Xiao, Jiangnan ^{[2
]}

Zhang, Ziran ^{[2
]}

Xu, Yuming ^{[2
]}

Chen, Long ^{[2
]}

机构：

[1] Georgia Inst Technol, Atlanta, GA 30332 USA

[2] Fudan Univ, Key Lab Informat Sci Electromagnet Waves, Minist Educ, Shanghai 200433, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 18期

基金：

中国国家自然科学基金;

关键词：

Photonic vector signal generation; quadrature amplitude modulation; optical carrier suppression; precoding; MILLIMETER-WAVE GENERATION; W-BAND; TRANSMISSION-SYSTEM; UP-CONVERSION; FREQUENCY; FIBER; MODULATION; SCHEME; MZM; LINK;

D O I：

10.1109/LPT.2015.2448517

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We numerically and experimentally investigate and compare photonic constant- and multi-amplitude quadrature-amplitude-modulation (QAM) vector signal generation at radio frequency (RF) bands enabled by a Mach-Zehnder modulator (MZM)-based optical carrier suppression (OCS) modulation. In order to attain an electrical vector RF signal displaying multi-amplitude QAM modulation, such as 8 QAM and 16 QAM, after square-law photodiode detection, the driving RF signal carrying multiamplitude QAM transmitter data, should be both amplitude-and phase-precoded before used to drive the MZM. However, for constant-amplitude QAM modulation, such as quadrature-phase-shift-keying (QPSK), only phase precoding is needed. We experimentally demonstrate 1-GBd vector signal generation at 12 GHz enabled by an MZM-based OSC modulation, adopting QPSK, 8 QAM, and 16 QAM modulation, respectively. We also experimentally compare the bit error rate performance of the three different vector signals, and the QPSK case is the best, while the 16 QAM case is the worst.

引用

页码：1977 / 1980

页数：4

共 17 条

[1] Microwave vector signal transmission over an optical fiber based on IQ modulation and coherent detection [J].