全相位频响屏蔽滤波理论与应用研究

项目名称： 全相位频响屏蔽滤波理论与应用研究

项目编号： No.61271069

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： 吕卫

作者单位： 天津大学

项目金额： 70万元

中文摘要： 随着软件无线电、认知无线电等新型电子信息技术的迅猛发展，滤波器频率响应屏蔽(FRM)因其具备高效率、高性能的数字滤波优势而获得越来越广泛的应用。然而现有FRM技术存在系数优化速度慢、功能更新配置不灵活等突出问题，迫切需要引入新的滤波理论给予解决。本课题提出引入全相位数字滤波理论来克服现有FRM技术的缺陷，将在以下5个方面改善现有FRM滤波性能：(1)构造新型全相位FRM陷波器实现结构，并推导FRM陷波器的衰减特性；(2)设计全相位FRM滤波器的系数优化算法，并推导其频率响应的理论特性；(3)研究基于FRM的全相位半带滤波与多采样率信号处理；(4)在功能原理级设计并实现FRM滤波器的快速重配置策略；(5)完成全相位FRM滤波器的硬件实现与验证。总之，本课题意图在理论分析、方案设计、原理仿真验证、原理硬件验证等多个层次上，构筑并完善全相位FRM滤波理论体系，大力推动更多先进应用领域的研究进展。

中文关键词： 全相位；数字滤波；频率响应屏蔽；传输特性；解析公式

英文摘要： With the rapid development of new electronic information technologies such as software-defined radio, cognitive radio, etc., filter Frequency Response Masking (FRM) obtains increasingly wide applications because of its advantages in digital filtering such as high-efficiency, high-performance. However, the current FRM techniques have prominent problems, such as the low speed of coefficient optimization , and low flexibility of function configuration, etc.. These problems are urgent to be solved by introducing a new filtering theory. In this project, we introduce the all-phase Digital Filtering Theory to the design of FRM filters, which is a novel and promising scheme to overcome the defects of current FRM techniques. Future work to improve the performance of FRM filters lies in the following 5 aspects: (1)Construct all-phase FRM notch filter to achieve the structure, and derive its attenuation characteristics; (2)Design the coefficient optimization algorithm of all phase FRM notch filter, and deduce the theoretical properties of its frequency response; (3)Research on all-phase half-band filtering and multi-rate signal processing based on FRM; (4)Design and achieve rapid reconfiguration strategy of FRM filter in functional principle level; (5)Implement and verify the theoretical all-phase FRM filters on hardware d

英文关键词： all-phase；digital filtering；FRM；transfer characteristic；analytic formula