基于FBMC的RoF网络关键技术

项目名称： 基于FBMC的RoF网络关键技术

项目编号： No.61272507

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 王建萍

作者单位： 北京科技大学

项目金额： 82万元

中文摘要： 无线通信能提供随时随地接入网络进行通信的能力，但是随着多媒体时代的到来，传统的无线接入网的速度和带宽已不能满足人们的需求，因此项目组结合在光载无线(RoF)方面取得的研究成果，创新性地提出构建基于滤波器组多载波技术的光纤无线通信系统(FBMC-RoF)，通过研究基带多载波通信等效模型，得到接收和发送模型脉冲之间的互模糊函数与解调输出的关系，从理论上得到脉冲滚降系数的取值与系统过采样倍数以及子载波之间的数学约束，同时结合线性迭代算法，设计一个新的近似重构的原型低通滤波器。而针对系统信号PAPR过高的问题，提出采用削波滤波法降低峰均比过高的方案。针对系统同步技术存在的问题，提出了一种数-模混合处理的CFO与定时误差联合盲估计算法。对于系统中偏振模色散(PMD)问题，提出采用DOP检测法设计并实现了一个自适应补偿系统模型。这些问题的解决，对计算机无线网络的服务质量和多元化发展有着巨大的促进作用。

中文关键词： 滤波器组多载波；光载无线电；峰均功率比；原型滤波器；同步定时

英文摘要： Wireless communication can provide a convenient way to access network at anywhere and anytime, but, with the development of multimedia technology, the speed and bandwidth of traditional wireless access technology can't meet the demands of us. Hence,our project team's work is based on the research achievements in ROF which is from National Natural Science Foundation projects, and we innovatively present FBMC-ROF, Filter Bank based Multi-Carrier technology. By means of researching the base band multi-carrier equivalent model, we can get the relationship between the cross-ambiguity function in the send and receive model impulse and the output of the demodulator. And theoretically get the mathematics restrain among the impulse roll-off factor, multiples of the system over-sampling and the sub-carrier. And then at the same time we design a new near reconstruction prototype low-pass filter combined with linear iteration algorithm. We first present a Clipping and Filtering method that is specific to solve the problem that the PAPR of the system signal is too high. And arm at the system synchronization we present a digital/analogue hybrid CFO and timing error joint blind estimation algorithm. To solve the system PMW problem, we design and build a adaptive compensation system model based on the DOP detection.Solution to

英文关键词： FBMC；ROF；PAPR；Prototype Filter；Timing