ZTE

ZTE Communications ›› 2009, Vol. 7 ›› Issue (3): 25-30.

• Special Topic • Previous Articles     Next Articles

Optimization of Millimeter-Wave RoF System Structure

Zhang Cheng , Chen Zhangyuan , Hu Weiwei   

  1. State Key Laboratory on Advanced Optical Communication Systems and Networks , Peking University , Beijing 100871 , P . R . China
  • Online:2009-09-25 Published:2020-03-03
  • About author:Zhang Cheng is studying for his master’s degree at the National Laboratory on Local FiberOptic Communication Networks and Advanced Optical Communication Systems of Peking University. He is mainly engaged in the research of millimeter-wave RoF wireless communication technologies.

    Chen Zhangyuan is a professor and the deputy director at the National Laboratory on Local Fiber-Optic Communication Networks and Advanced Optical Communication Systems of Peking University, with research interests in highspeed optical transmission systems, optical networks and optical devices. He is also a senior member of China Institute of Communications and a member of IEEE and the Optical Society of America (OSA). In addition, he was a visiting scholar of Ecole Nationale Supérieure des Télécommunications and the Department of Electrical Engineering and Computer Sciences (EECO) of University of California (UC), Berkeley.

    Hu Weiwei is a professor at the National Laboratory on Local Fiber-Optic Communication Networks and Advanced Optical Communication Systems of Peking University and the deputy director of the Department of ElectroniCO of School of ElectroniCO Engineering and Computer Science of Peking University. She has long been engaged in research and teaching in the fields of fiber communications, with research interests in millimeter-wave RoF technologies, optical phased array and wireless optical communications. She was a guest researcher of Japanese Advanced Telecommunications Research Institute International (ATR) and a visiting professor of the Department of PhysiCO of University of Tuebingen, Germany. So far, she has published over 70 academic papers and been granted six patents.
  • Supported by:
    This work was funded by the National Natural Science Foundation of China under Grant No. 60736003, and by National High Technology Research and Development Program of China ("863 program") under Grant No. 2006AA01Z261.

PDF (PC)

Abstract: Based on the seamless integration of broadband optical and wireless access networks, millimeter-wave Radio over Fiber (RoF) technology is considered to be a promising solution for the next generation access networks which will provide high capacity and flexibility with low cost. But due to its large cost to realize, the system architecture needs to be optimized. In the millimeter-wave optical generation part, optical heterodyning method can be introduced to generate a high-frequency millimeter-wave signal using a low-frequency signal source. And the system efficiency can be greatly improved based on injection-locking of a semiconductor laser. In the downlink, the transmission distance can be greatly enhanced using single-sideband modulation. And the single-mode modulation (single-sideband modulation) based on an injection-locked semiconductor laser is a much simpler solution. In the uplink, direct modulation of optical heterodyning signal can be used to realize the down-conversion of uplink millimeter-wave signal which simplifies the receiver structure at the centre office. In the wavelength division multiplexing millimeter-wave RoF duplex system, the wavelength reuse in both downlink and uplink can save the wavelength resource in the whole system, which improves its efficiency.