Fiber-Wireless Networks and Subsystem Technologies
Fiber-Wireless Networks and Subsystem Technologies
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DOI：
10.1109/jlt.2009.2031423
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发表时间：
2010-02
影响因子：
4.7
通讯作者：
C. Lim;A. Nirmalathas;M. Bakaul;P. Gamage;Ka-Lun Lee;Yizhuo Yang;D. Novak;R. Waterhouse
中科院分区：
文献类型：
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作者：
C. Lim;A. Nirmalathas;M. Bakaul;P. Gamage;Ka-Lun Lee;Yizhuo Yang;D. Novak;R. Waterhouse
结合WDM技术的混合光纤无线网络，用于在亚毫米波和毫米波频率区域运行的固定无线接入，正在积极寻求为超高带宽通信提供不受束缚的连接。这种无线网络的架构需要部署大量具有高吞吐量的天线基站，以最大限度地实现地理覆盖，并将主要交换和路由功能集中在一个位置。毫米波无线信号在混合网络中的传输受到几个缺陷的影响，包括低光电转换效率，光纤色散以及由于链路沿线的非线性而导致的退化。实现这种网络的主要技术挑战之一在于减轻无线信号在混合网络中遇到的各种光损伤。在本文中，我们提出了不同的技术来光传输毫米波无线信号和克服与无线信号的传输相关的损伤的概述。我们还回顾了将光纤无线技术集成到现有光学基础设施中的子系统的不同设计。
Hybrid fiber-wireless networks incorporating WDM technology for fixed wireless access operating in the sub-millimeter-wave and millimeter-wave (mm-wave) frequency regions are being actively pursued to provide untethered connectivity for ultrahigh bandwidth communications. The architecture of such radio networks requires a large number of antenna base-stations with high throughput to be deployed to maximize the geographical coverage with the main switching and routing functionalities located in a centralized location. The transportation of mm-wave wireless signals within the hybrid network is subject to several impairments including low opto-electronic conversion efficiency, fiber chromatic dispersion and also degradation due to nonlinearities along the link. One of the major technical challenges in implementing such networks lies in the mitigation of these various optical impairments that the wireless signals experience within the hybrid network. In this paper, we present an overview of different techniques to optically transport mm-wave wireless signals and to overcome impairments associated with the transport of the wireless signals. We also review the different designs of subsystems for integrating fiber-wireless technology onto existing optical infrastructure.