The Kalman filter separation model of multi-path transmission

• Main Authors: Jing-Zu Chen, 陳勁足
• Other Authors: Gwo-Jia Jong
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/85189971790038455653

碩士 === 國立高雄應用科技大學 === 電子與資訊工程研究所碩士班 === 94 === Multi-path fading distortion is an important problem of signal transmission for separation model at different signal to noise ratio (SNR). In a multipath environment, the signals arrive from different directions with a different attenuation and different time delay. In this thesis, we present a mathematical model to analysis for transmitting two signals and separate the mixed signals from amplitude-locked loop (ALL) system. A discrete-time Kalman filter (KF) is used for the separated system, it is requires a state space model for describing the signal dynamics and the signals sequence can be represented as an autoregressive model (AR) parameters. In this thesis, it is adopted the discrete state-space procedure for searching the optimal weight coefficients value by updating Kalman gain for finding the minimization value of mean square error (MSE) method. In this paper, the major structure of the system model consists of Phase-Locked Loop, Amplitude-Locked Loop and Kalman filter. Finally, the simulation results are demodulated the signals with Doppler distortion then via the analysis of the computer simulated to obtain the MSE performance improvement for the output signal of ALL and Kalman filter.