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According to the characteristics of broad frequency and abundant spectral components of mine microseismic signal, we use AR model parameters and BP neural network to propose a method of filtering treatment for the signal and noise with different frequency ranges. We can use this method to separate noise and signal, and decompose different frequency band signals, so we can achieve the goal of filtering...
A low-dimensional Kalman filter method is adopted in time and frequency-selective fading environment in Channel estimator based on block-type pilot signals for WiMAX which adopt OFDM physical layer. For simplicity, we use autoregressive process to model the time-varying channel. The algorithm take advantage the structure of OFDM symbol which has two-dimensional of time-frequency, first, the one-dimensional...
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