基于认知的光载无线宽带接入网中资源管理的新模型与新方法

项目名称： 基于认知的光载无线宽带接入网中资源管理的新模型与新方法

项目编号： No.61271182

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 纪红

作者单位： 北京邮电大学

项目金额： 80万元

中文摘要： 分布式系统架构是宽带高速无线接入领域备受青睐的关键技术之一。然而，随着业务需求的不断提高和用户数量的迅速增长，传统分布式系统架构在网络覆盖、资源分配、信道间干扰、系统升级等方面的缺陷日渐突出。因此，需要设计更合理的网络模型和通信技术为语音、数据、图像、流媒体等业务提供更有力的支持。将认知无线电、分布式天线及光纤传输技术引入无线接入系统架构中，采用集中式网络控制和管理方式，构建基于认知的光载无线宽带接入网，能克服传统架构的缺陷，实现网络更广域覆盖、更可靠运行和更科学管理。本课题研究基于认知的光载无线宽带接入网模型，及其中的信道估计和资源管理技术，拟利用粒子群优化理论实现信道状态的快速准确估计，采用文化微分进化算法解决网络功率控制问题，实现功耗最小化，进而构建"三维弹性网"模型，提出基于多维矢量空间的无线资源管理策略，为高移动环境和热点小区宽带接入提供理论依据。

中文关键词： 基于认知的光载无线宽带接入网；信道预测；功率控制；多维资源弹性共享；

英文摘要： Distributed architecture has been a promising technology in the field of broadband wireless networks which can provide high speed wireless access. However, as the demand for wireless service and the number of users increasing promptly, the defects of the traditional distributed system in the network coverage, source management, inter-channel interference and system upgrade have become increasingly evident. As a result, there is a necessity to design more reasonable network models and technologies in order to provide powerful support for various service including voice, data, image, streaming media and so on. Based on above reasons, we construct a network called Cognitive Broadband Wireless Access Network over Fiber (CBWANoF) which is efficient to get rid of deficiencies of pervious distributed network. In this structure, we introduce cognitive radio, distributed antenna and optical fiber transmission into wireless access. Moreover, the centralized network control and management are also adapted. Our goal is to understand and characterize the fundamental performance limits of such a centrally-controlled distributed antenna system, provide theoretical basis for CBWANoF to improve its coverage area, guarantee its property and realize scientific management. To fulfill this goal, we propose a) Particle Swarm Optimiza

英文关键词： CBWANoF；channel prediction；power control；multi-dimensional elastic resource sharing；