Title :
A parameter estimation method for linear amplitude modulated chirp signals based on Discrete Fractional Fourier Transform
Author :
Sajib, Saurav Zaman Khan ; Mostayed, Ahmed
Author_Institution :
Alcatel-Lucent, Dhaka
Abstract :
A new parameter estimation method for linear amplitude modulated chirp signal is proposed. This method utilizes the discrete fractional Fourier transform (DFRFT) along with Radon Wigner transform (RWT) to estimate the amplitude and phase parameters of multi-component chirp signals. Expressions of DFRFT for estimating amplitude and initial phase parameters are derived. The chirp rate and initial frequency is estimated using RWT. Performance of the proposed method in noise is analyzed by Monte-Carlo simulation for different signal to noise ratio (SNR). Better performance was achieved at SNR as low as -10 dB.
Keywords :
Monte Carlo methods; Radon transforms; discrete Fourier transforms; parameter estimation; signal processing; Monte-Carlo simulation; Radon Wigner transform; discrete fractional Fourier transform; linear amplitude modulated chirp signals; multicomponent chirp signals; parameter estimation method; phase parameters; signal to noise ratio; 1f noise; Amplitude estimation; Amplitude modulation; Chirp modulation; Discrete Fourier transforms; Fourier transforms; Frequency estimation; Parameter estimation; Phase estimation; Signal to noise ratio;
Conference_Titel :
Electrical and Computer Engineering, 2008. ICECE 2008. International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4244-2014-8
Electronic_ISBN :
978-1-4244-2015-5
DOI :
10.1109/ICECE.2008.4769236
