Title :
A modified Ziv-Zakai lower bound and its application in array processing
Author :
Gu, Xiaodong ; Wong, Max
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
Abstract :
The Ziv-Zakai (1975) lower bound (ZZLB) is examined and modified for uses for the estimation of deterministic parameters in array processing. The result is a new lower bound called the modified Ziv-Zakai lower bound (MZLB). The MZLB for the variance of DOA is derived. The comparison between the MZLB, Cramer-Rao lower bound (CRLB), and Barakin lower bound (BLB) shows that, for high SNR, MZLB≃CRLB, but the MZLB is much tighter than the CRLB and also tighter than the BLB when SNR is lower. The MZLB does not need optimization of a parameter, but BLB does
Keywords :
parameter estimation; signal processing; Barakin lower bound; Cramer-Rao lower bound; DOA; SNR; array processing; deterministic parameters; directions of arrival; modified Ziv-Zakai lower bound; parameter estimation; parameter optimisation; variance; Application software; Array signal processing; Delay effects; Direction of arrival estimation; Error probability; Mean square error methods; Parameter estimation; Sensor arrays; Signal to noise ratio; White noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150723
