支持异构接入技术的OFDM-PON资源分配与优化机制研究

OFDM-PON has been acknowledged as one of the promising solutions for supporting various heterogeneous access technologies, due to its advantages such as high spectrum efficiency, flexible resource allocation, providing transparent transmission channels for different types of services. However, there are still lots of challenges when using OFDM-PON to carry the different types of services of various heterogeneous access technologies. The uniform and transparent resource allocation is needed to shield the difference of various access technologies in multiplexing method and resource allocation/scheduling, etc., so as to address the key issues such as high peak to average power ratio of optical OFDM signal, frequency offset and phase noise sensitivity. Therefore, the research on these issues mentioned above has become a hot topic in academic and industrial communities. This project mainly studies the resource allocation and optimization mechanism of OFDM-PON supporting heterogeneous access technologies. The research works include: architectural design of OFDM-PON system supporting heterogeneous access technologies, virtual subcarrier allocation and scheduling algorithm, physical-layer optimization mechanism, and cross-layer joint optimization mechanism. This project will help researchers to deeply explore the resource allocation and optimization mechanism of OFDM-PON supporting heterogeneous access technologies, study effective algorithms to solve the problems such as resource virtualization, allocation/scheduling, and cross-layer joint optimization mechanism, and lay the root for the OFDM-PON supporting various heterogeneous access technologies.

OFDM-PON具有频谱效率高、资源分配灵活、可为不同类型业务提供透明传输通道等优势，被认为是支持多种异构接入技术的理想方案之一。采用OFDM-PON承载多种异构接入技术的异质业务面临诸多挑战，亟需统一且透明的资源分配机制，屏蔽不同接入技术的复用方法、资源分配/调度等差异，解决光OFDM信号峰均功率比高、频率偏移及相位噪声敏感等关键问题。因此，对其进行研究已成为国际学界和业界的热点问题。本项目主要研究支持异构接入技术的OFDM-PON资源分配与优化机制，研究内容包括：支持异构接入技术的OFDM-PON系统架构设计、虚拟子载波分配与调度算法研究、物理层性能优化机制研究及跨层联合优化机制研究。开展这项研究将有利于深入探索支持异构接入技术的OFDM-PON资源分配与优化技术，研究有效的方法解决资源虚拟化、分配/调度及跨层联合优化等问题，为实现OFDM-PON对多种异构接入技术的有效支持打下基础。

OFDM-PON具有频谱效率高、资源分配灵活、可为不同类型业务提供透明传输通道等优势，被认为是支持多种异构接入技术的理想方案之一。本项目主要研究支持多种异构接入技术的OFDM-PON资源分配与优化机制，内容包括：（1）支持异构接入技术的OFDM-PON系统架构设计；（2）支持异构接入技术的虚拟子载波分配与调度算法；（3）OFDM-PON物理层性能优化机制；（4）OFDM-PON跨层联合优化机制。在学术研究方面，本项目发表和录用了论文54篇，其中ESI 1%高被引论文3篇，SCI论文45篇；申请国家发明专利7项；成果获教育部自然科学奖、辽宁省科技进步奖、中国通信学会自然科学奖等11项。在人才培养方面，本项目培养研究生43人，其中博士生18人、硕士生25人；毕业博士生5人、硕士生16人；1名博士生获中国通信学会优秀博士学位论文奖，2名博士生辽宁省优秀博士学位论文奖；多名研究生获国家奖学金。在国际交流方面，项目组成员参加国际交流和国际会议28人次，获最佳论文奖2次；研究成果形成的论文得到国内外本领域同行专家及学者的广泛关注。本项目提出了新的有效方案，发表了高水平的学术论文，产生了具有自主知识产权的协议、模型和算法等，培养了光通信领域的青年人才，为下一代光接入网的建设提供了候选方案和人才储备。