DocumentCode :
3008653
Title :
A pole-zero complex adaptive joint process least-squares lattice
Author :
Hodgkiss, W.S. ; Almagor, D.
Author_Institution :
Marine Phys. Lab., Scripps Inst. of Oceanogr., San Diego, CA, USA
fYear :
1988
fDate :
11-14 Apr 1988
Firstpage :
2789
Abstract :
A pole-zero adaptive noise cancelling structure is described and its relevance to the adaptive beamforming problem discussed. An embedding approach is taken where a scalar ARMA (autoregressive moving-average) process is embedded into a two-channel AR process. Drawing on previously developed recursions for the joint process, multichannel, least-squares lattice, the recursions for the pole-zero adaptive noise canceller are implemented. A performance comparison is made between the resulting pole-zero adaptive noise cancelling structure and the all-zero least-squares lattice adaptive noise cancelling structure. The ability to implement adaptive poles is shown to be particularly advantageous in the region where the reference channel has a null
Keywords :
interference suppression; least squares approximations; signal processing; adaptive beamforming; all-zero least-squares lattice adaptive noise cancelling structure; autoregressive moving-average; embedding approach; noise cancelling structure; pole-zero complex adaptive joint process least-squares lattice; recursions; scalar ARMA; two-channel AR process; Adaptive filters; Array signal processing; Digital filters; Finite impulse response filter; Frequency; Interference; Laboratories; Lattices; Noise cancellation; Signal processing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
ISSN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.1988.197230
Filename :
197230
Link To Document :
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