Discrete linear canonical transform computation by adaptive method
Discrete linear canonical transform computation by adaptive method
复制标题
自适应方法的离散线性正则变换计算
DOI：
10.1364/oe.21.018138
复制
发表时间：
2013-07-29
期刊：
影响因子：
3.8
通讯作者：
Wang, Yue
中科院分区：
文献类型：
--
作者：
Zhang, Feng;Tao, Ran;Wang, Yue
线性正则变换（LCT）描述了二次相位系统对波场的影响，推广了许多光学变换。本文提出了一种基于自适应最小均方（LMS）算法的离散LCT计算方法。推导了采用LMS算法的基于块的离散LCT和基于流的离散LCT的计算方法，并考虑了这些方法在自适应滤波器系统中的实现结构。所提出的计算方法具有固有的并行结构，这使得它们适合于高效的VLSI实现，并且对计算过程中可能出现的错误的传播具有鲁棒性。(C)2013年美国光学学会
The linear canonical transform (LCT) describes the effect of quadratic phase systems on a wavefield and generalizes many optical transforms. In this paper, the computation method for the discrete LCT using the adaptive least-mean-square (LMS) algorithm is presented. The computation approaches of the block-based discrete LCT and the stream-based discrete LCT using the LMS algorithm are derived, and the implementation structures of these approaches by the adaptive filter system are considered. The proposed computation approaches have the inherent parallel structures which make them suitable for efficient VLSI implementations, and are robust to the propagation of possible errors in the computation process. (C) 2013 Optical Society of America