基于非线性逼近法的QDDFS新构架  

A New QDDFS Architecture Base on Non-Linear Approach

作　　者：赵占锋[1] 周志权[1] 乔晓林[1] 

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《电子学报》2007年第1期1-3,共3页Acta Electronica Sinica

摘　　要：本文将三角近似法和非线性逼近法相结合,提出了一种高压缩比的设计方案.并对该设计方案进行了详细的理论分析和参数优化,在16 bit的QDDFS系统中,压缩比达到了655.36∶1,并且无失真动态范围(SFDR)优于96dBc,最后给出了本方案的详细结构.Based on the principle of trigonometric approximation and non-liner aooriach,a new QDDFS Architecture with high compression ratio is presented. Its design principle has been analyzed theoretically and all the parameters have also been optimized in Matlab. A high compression ratio of 655.36 is achieved at 96 dBc in a 16bit system.Finally the whole architecture for proposed scheme is given.

关 键 词：DDFS 三角近似法 非线性近似 

分 类 号：TN919.3[电子电信—通信与信息系统]