TY - JOUR
T1 - Subspace-based algorithm for parameter estimation of polynomial phase signals
AU - Wu, Yuntao
AU - So, Hing Cheung
AU - Liu, Hongqing
PY - 2008
Y1 - 2008
N2 - In this correspondence, parameter estimation of a polynomial phase signal (PPS) in additive white Gaussian noise is addressed. Assuming that the order of the PPS is at least 3, the basic idea is first to separate its phase parameters into two sets by a novel signal transformation procedure, and then the multiple signal classification (MUSIC) method is utilized for joint estimating the phase parameters with second-order and above. In doing so, the parameter search dimension is reduced by a half as compared to the maximum likelihood and nonlinear least squares approaches. In particular, the problem of cubic phase signal estimation is studied in detail and its simplification for a chirp signal is given. The effectiveness of the proposed approach is also demonstrated by comparing with several conventional techniques via computer simulations. © 2008 IEEE.
AB - In this correspondence, parameter estimation of a polynomial phase signal (PPS) in additive white Gaussian noise is addressed. Assuming that the order of the PPS is at least 3, the basic idea is first to separate its phase parameters into two sets by a novel signal transformation procedure, and then the multiple signal classification (MUSIC) method is utilized for joint estimating the phase parameters with second-order and above. In doing so, the parameter search dimension is reduced by a half as compared to the maximum likelihood and nonlinear least squares approaches. In particular, the problem of cubic phase signal estimation is studied in detail and its simplification for a chirp signal is given. The effectiveness of the proposed approach is also demonstrated by comparing with several conventional techniques via computer simulations. © 2008 IEEE.
KW - Parameter estimation
KW - Polynomial phase signal
KW - Subspace method
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-53149150603&origin=recordpage
U2 - 10.1109/TSP.2008.927457
DO - 10.1109/TSP.2008.927457
M3 - RGC 21 - Publication in refereed journal
VL - 56
SP - 4977
EP - 4983
JO - IEEE Transactions on Signal Processing
JF - IEEE Transactions on Signal Processing
SN - 1053-587X
IS - 10 I
ER -