任意倍数重采样结构参数优化选择  

Optimal Selection in System Structure of Arbitrary Sampling Rate Conversion

作　　者：蒋天立 吴迪[1] 彭华[1] 巩克现[1] 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2014年第3期337-343,379,共8页Journal of Information Engineering University

摘　　要：定量分析了不同多级结构下重采样系统的性能和计算量,并以此为基础选择最优重采样结构。首先对任意倍数采样率变换算法进行分析,将其和CIC、HB两种高效整数倍重采样结构混合级联组成多级重采样系统。在固定系统信噪比和通带最大衰减的条件下,分别推导了各种结构的采样率变换范围和计算量。并以计算量为准则构造系统结构选择器,在不同的采样率变换范围时选择不同的系统结构和参数,在重采样系统性能不变的条件下使所选系统结构计算量达到最小。An approach is presented to quantitatively analyze the performance and computation of resampling systems under different multi-level structure, and as the basis for selecting the optimal resampling structure. First, this paper analyzes the algorithm of arbitrary sampling rate conversion and applies it with CIC and HB two efficient integer resampling structure to construct multi-stage cascade resampling systems. Under the conditions of a fixed system SNR and maximum passband attenuation, the range of sampling rate conversion and calculation under various structures range are derived. And system structure selection criteria is built by calculation, selecting different system structures and parameters at different sampling rate conversion ratio with the fixed performance under minimal calculation.

关 键 词：任意倍数采样率变换 软件无线电 取邻抽取 多级级联 

分 类 号：TN914[电子电信—通信与信息系统]