伪码-线性调频复合信号参数估计理论性能分析

doi:10.11999/JEIT150523

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Abstract

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.

Key words： Parameter estimation Pseudo-Random Binary-phase Code and Linear Frequency Modulation (PRBC- LFM) signal Step-by-step estimation method Modified Cramer-Rao Lower Bound (MCRLB)

Received: 06 May 2015 Published: 18 November 2015

PACS:

TN971.+1

Fund:

The National Natural Science Foundation of China (61172116)

Corresponding Authors: WANG Pei E-mail: wangpei1128@foxmail.com

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	WANG Pei
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	TANG Bin

Cite this article:

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[J]. JEIT, 2016, 38(2): 472-477.

URL:

http://jeit.ie.ac.cn/EN/10.11999/JEIT150523 OR http://jeit.ie.ac.cn/EN/Y2016/V38/I2/472

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