Theoretical Performance Analysis for Parameter Estimation of Hybrid Modulated Signal Combining Pseudo-random Binary-phase Code and Linear Frequency Modulation
WANG Pei ZHU Jun TANG Bin
(School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
According to the theoretical performance for parameter estimators of a signal combined Pseudo-Random Binary-phase Code (PRBC) and Linear Frequency Modulation (LFM), this paper analyzes the impact of step-by- step method on the signal estimation problem and gives the analytical expressions of Modified Cramer-Rao Lower Bound (MCRLB) for parameter estimation of PRBC-LFM signal in white Gaussian noise. Using the statistical characteristics of PRBCs, the Fisher’s information matrix is derived for parameters including initial frequency, chirp rate, initial phase and code width. The MCRLBs are therefore calculated. The MCRLBs are analyzed by comparison and the validity is demonstrated by numerical simulation experiments.
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WANG Pei, ZHU Jun, TANG Bin. Theoretical Performance Analysis for Parameter Estimation of Hybrid Modulated Signal Combining Pseudo-random Binary-phase Code and Linear Frequency Modulation. JEIT, 2016, 38(2): 472-477.
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