一种升余弦成形滤波器的设计A Sort of Raise Cosine Filter Design
刘睿强,景新幸
摘要(Abstract):
给出一种适用于PHS基带系统中高性能成形滤波器,对比两种实现方法在基带芯片中的性能,利用最少的非零比特位来表示符号数的编码技术即符号数Canonic Sign Digit表示(CSD),采用子结构共享技术改进数字滤波器结构,实现了二进制补码与CSD的转换和系统中升余弦Nyquist成形滤波器的ASIC设计,在SMIC 0.18μm工艺下进行了功能仿真、综合和后仿真。
关键词(KeyWords): 升余弦滤波器;CSD;子结构共享;PHS
基金项目(Foundation):
作者(Author): 刘睿强,景新幸
参考文献(References):
- [1]Soderstrand M A.CSD multipliers for FPGA DSP applica-tions,Circuits and Systems,2003.ISCAS′03.Proceedings ofthe 2003 International Symposium.V 469 V 472 Vol.5May 2003.
- [2]Youngbeom Jang,Sejung Yang.Low power CSD LinearPhase FIR Filter Structure Using Vertical Common Subexpression[J].Electronics Letters,2002,38(15):777 779.
- [3]Rappaport T S.Wire Communications:Principles and Prac-tice.Prentice Hall,1996.
- [4]Hwang K.Computer Arithmetic:Principles,Architectureand Design.Wiley,1979.
- [5]Taylor,Fred J.Digital Filter Design Handbook,New York:Marcel Dekker,1983.
- [6]Keshab K Parhi.VLSI Digital Signal Processing Systems:Design and Implementions.John Wiley&Sons,1999:566 569.