Envelope detection of 16QAM single carrier signal for IM/DD RoF system at Q-band

Kai Lv; Xiaolong Pan; Junwen Zhang; Kaihui Wang; Dong Guo; Qi Zhang; Deng’ao Li; Xiangjun Xin

doi:10.1587/elex.16.20180986

LETTER

Envelope detection of 16QAM single carrier signal for IM/DD RoF system at Q-band

Kai Lv, Xiaolong Pan, Junwen Zhang, Kaihui Wang, Dong Guo, Qi Zhang, Deng’ao Li, Xiangjun Xin

Author information

Kai Lv
School of Electronic Engineering, Beijing University of Posts and Telecommunications
Xiaolong Pan
School of Electronic Engineering, Beijing University of Posts and Telecommunications
Junwen Zhang
Key Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University
Kaihui Wang
Key Laboratory for Information Science of Electromagnetic Waves (MoE), Department of Communication Science and Engineering, Fudan University
Dong Guo
School of Electronic Engineering, Beijing University of Posts and Telecommunications
Qi Zhang
School of Electronic Engineering, Beijing University of Posts and Telecommunications
Deng’ao Li
College of Information Engineering, Taiyuan University of Technology
Xiangjun Xin
School of Electronic Engineering, Beijing University of Posts and Telecommunications

Keywords: envelope detection, Intensity-Modulation/Direct-Detection (IM/DD), radio-over-fiber (RoF)

JOURNAL FREE ACCESS

2019 Volume 16 Issue 4 Pages 20180986

DOI https://doi.org/10.1587/elex.16.20180986

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Abstract

In this paper, an envelope detection scheme of single carrier 16-ary quadrature amplitude modulation (16QAM) for Intensity-Modulation/Direct-Detection (IM/DD) radio-over-fiber (RoF) system is theoretically and experimentally investigated. Based on the proposed scheme, the mm-wave 16QAM signal is down-converted to the intermediate frequency (IF) 16QAM one by an envelope detector (ED) and there is no use of a mixer at the user side. We theoretically and experimentally study the performance of the signal under various conditions. In the system, 2 GBaud 16QAM signal is delivered over 25 km standard single mode fiber (SSMF) link and 2.9 m wireless link under bit error rate (BER) of 3.8 × 10⁻³.

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