A Log-Frequency Approach to the Identification of the Wiener-Hammerstein Model

被引：15
|
作者：
Goodman, Joel [1 ]
Herman, Matthew [1 ]
Bond, Bradley [2 ]
Miller, Benjamin [1 ]
机构：
[1] MIT, Lincoln Lab, Lexington, MA 02420 USA
[2] MIT, Cambridge, MA 02139 USA
来源：
IEEE SIGNAL PROCESSING LETTERS | 2009年 / 16卷 / 10期
关键词：
Log-frequency; nonlinear system identification; power amplifier modeling; predistortion; Wiener-Hammerstein system;
D O I：
10.1109/LSP.2009.2026460
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper we present a simple closed-form solution to the Wiener-Hammerstein (W-H) identification problem. The identification process occurs in the log-frequency domain where magnitudes and phases are separable. We show that the theoretically optimal W-H identification is unique up to an amplitude, phase and delay ambiguity, and that the nonlinearity enables the separate identification of the individual linear time invariant (LTI) components in a W-H architecture.
引用
收藏
页码：889 / 892
页数：4
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