一种参数可配置的SRRC滤波器的结构设计及其代码的自动生成方法  

VLSI Design of Reconfigurable SRRC Filter and Its Automatic Code Generation

作　　者：陈淑玉[1] 曾晓洋[1] 陈赟[1] 武建强[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《复旦学报（自然科学版）》2009年第4期438-442,共5页Journal of Fudan University：Natural Science

基　　金：上海市经济和信息化委员会资助项目(77062001)

摘　　要：提出了平方根升余弦(SRRC)滤波器的一种直接型对称折叠和流水线加法树的规整结构.鉴于这种结构的规则特性,提出了一种对滤波器的阶数、滤波器系数精度以及输入输出数据宽度进行配置的代码自动生成方法,采用该方法可以方便快捷地实现可应用于不同系统中的相同结构、不同阶数、精度的SRRC滤波器.采用该结构,一个257阶的SRRC滤波器,只消耗86 315门,即可达到168.9 MHz的工作频率,具有很好的速率面积比.Design of square root raised cosine （SRRC） filters with fixed architecture but different tap number and different accuracy is proposed in this paper. This architecture features symmetric folding and pipelined adder trees. With the architecture, a 257-tap SRRC filter is realized, which can work at a maximum frequency of 168. 9 MHz with 86 135 gates . At the same time, automatic code generation method is developed because the present architecture is regular, and both the number of the taps and bit accuracy are set reconfigurable. In this way, a variety of filters with fixed structure but different tap number and accuracy could be realized rapidly for different system requirements.

关 键 词：SRRC滤波器 代码自动生成 流水线 加法树 

分 类 号：TN402[电子电信—微电子学与固体电子学]