M-ary information processing via an optimal nonlinear detector |
| |
Authors: | Li Jian-Long |
| |
Institution: | Department of Information Science \& Electronic Engineering,
Zhejiang University, Hangzhou\,\ 310027, China;Zhejiang Provincial Key Laboratory of Information Network
Technology, Hangzhou\,\ 310027, China |
| |
Abstract: | This paper presents a novel approach of M-ary
baseband pulse amplitude modulated signal processing via a
parameter-optimized nonlinear dynamic system. This nonlinear system
usually shows the phenomenon of stochastic resonance by adding
noise. To thoroughly discuss the signal processing performance of
the nonlinear system, we tune the system parameters to obtain a
nonlinear detector with optimal performance. For characterizing the
output of the nonlinear system, the derivation of the probability of
detection error is given by the system response speed and the
probability density function of the nonlinear system output. By
varying the noise intensity with fixed system parameters, the
phenomenon of stochastic resonance is shown and by tuning the system
parameters with fixed noise, the probability of detection error is
minimized and the nonlinear system is optimized. The detection
performance of the two cases is compared with the theoretical
probability of detection error, which is validated by numerical
simulation. |
| |
Keywords: | nonlinear detector stochastic resonance tuning
parameters probability of detection error |
本文献已被 维普 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|