A Survey on OFDM-Based Elastic Core Optical Networking
A Survey on OFDM-Based Elastic Core Optical Networking
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DOI：
10.1109/surv.2012.010912.00123
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发表时间：
2013-01-01
影响因子：
35.6
通讯作者：
Mukherjee, Biswanath
中科院分区：
文献类型：
--
作者：
Zhang, Guoying;De Leenheer, Marc;Mukherjee, Biswanath
正交频分复用（OFDM）是一种调制技术，已被广泛采用在许多新的和新兴的宽带无线和有线通信系统。由于其能够使用多个频谱重叠的低速子载波来传输高速数据流，OFDM技术提供了高频谱效率、抗载波间和符号间干扰的鲁棒性、对服务器信道条件的适应性等上级优点。近年来，对光OFDM（O-OFDM）传输技术进行了深入的研究，并且它被认为是未来超高速光传输的有前途的技术。基于O-OFDM技术，可以构建一种在频谱分配和数据速率调节方面具有极大灵活性和可扩展性的新型弹性光网络架构，以支持未来多样化的业务和快速增长的互联网业务。本文对基于OFDM的弹性光网络技术进行了全面的综述，包括OFDM的基本原理、O-OFDM技术、基于OFDM的弹性核心光网络的体系结构以及相关的关键使能技术。讨论了基于OFDM的弹性核心光网络的主要优点和研究中存在的问题。
Orthogonal frequency-division multiplexing (OFDM) is a modulation technology that has been widely adopted in many new and emerging broadband wireless and wireline communication systems. Due to its capability to transmit a high-speed data stream using multiple spectral-overlapped lower-speed subcarriers, OFDM technology offers superior advantages of high spectrum efficiency, robustness against inter-carrier and inter-symbol interference, adaptability to server channel conditions, etc. In recent years, there have been intensive studies on optical OFDM (O-OFDM) transmission technologies, and it is considered a promising technology for future ultra-high-speed optical transmission. Based on O-OFDM technology, a novel elastic optical network architecture with immense flexibility and scalability in spectrum allocation and data rate accommodation could be built to support diverse services and the rapid growth of Internet traffic in the future. In this paper, we present a comprehensive survey on OFDM-based elastic optical network technologies, including basic principles of OFDM, O-OFDM technologies, the architectures of OFDM-based elastic core optical networks, and related key enabling technologies. The main advantages and issues of OFDM-based elastic core optical networks that are under research are also discussed.