Generation Mechanism for Cyclostationary and Self-Similar Processes

S. Nalbalwar, S. Joshi, R. Patney
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Abstract

This paper proposes a generation mechanism for cyclostationary and self-similar processes. The proposed model extracts the information from the immediate coarser scale and adds the innovations to it to obtain the finer scale representation of the stochastic process. Basic block of the proposed model is the subband coder. By cascading the blocks of subband coder and passing white noise as one of input in addition to coarser information at each stage, cyclostationary process is generated. For generation of self-similar processes, white noise input for each stage is given in particular fashion. The mapping from finer scale to the immediate coarser scale is obtained using proposed blurring model. We have also given scheme for estimation of parameters of the proposed generation mechanism. The parameters are estimated for a given statistics case as well as the given data case. The proposed model can be used in variety of applications such as speech and image processing, biomedical signal processing, seismic data processing etc
周期平稳和自相似过程的产生机理
本文提出了一种循环平稳自相似过程的生成机制。该模型从直接的粗尺度中提取信息,并对其进行创新,以获得随机过程的更精细的尺度表示。该模型的基本模块是子带编码器。通过级联子带编码器的块,并在每个阶段传递白噪声作为输入之一,除了粗信息外,还产生了循环平稳过程。对于自相似过程的产生,每个阶段的白噪声输入都以特定的方式给出。利用所提出的模糊模型实现了从较细比例尺到直接较粗比例尺的映射。我们还给出了所提出的生成机制参数的估计方案。对给定的统计情况和给定的数据情况估计参数。该模型可用于语音和图像处理、生物医学信号处理、地震数据处理等多种应用
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