Multiband Phase-Modulated RoF Link With Coherent Detection and Bandpass Sampling

被引：4
作者：
Cao, Minghua [1 ,2 ]
Li, Jianqiang [1 ]
Dai, Yitang [1 ]
Yin, Feifei [1 ]
Xu, Kun [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[2] Lanzhou Univ Technol, Sch Comp & Commun, Lanzhou 730050, Peoples R China
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2015年 / 27卷 / 21期
基金：
中国国家自然科学基金;
关键词：
Radio-over-fiber; coherent communications; bandpass sampling; fiber optics; optical communications; RF SIGNALS; ALGORITHM; RECEIVER;
D O I：
10.1109/LPT.2015.2462087
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：
Bandpass sampling-based coherent detection of multiband subcarrier multiplexed signals was experimentally demonstrated over phase-modulated radio-over-fiber links. Theoretical analysis and experiments are conducted to evaluate the transmission performance. In addition, for multiband transmission, an effective method for determining the valid analog-to-digital converter sampling frequency ranges is derived to ensure no aliasing in the presence of frequency offset. Two quadrature phase-shift keying subcarrier signals were successfully transmitted and recovered over 50.6-km fiber transmission. The experimental results demonstrate that the bandpass sampling performs error free transmission with similar to 9 dB the sensitivity penalty when the sampling rate decreases from 10 to 1 GSa/s. The hardware independence and computational complexity reduction is worth of this performance loss.
引用
收藏
页码：2308 / 2311
页数：4
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