Title :
How narrow is narrowband? [adaptive array signal processing]
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
The "narrowband" or zero-bandwidth assumption is often made in the analysis of array signal processing algorithms. This paper provides both a definition and expression which precisely define the notion of narrowband The expression accurately predicts the point when the "narrowband" assumption fails for some superresolution algorithms, the Cramer Rao bound on angle estimation and the signal-to-interference-plus-noise performance of adaptive beamformers. Hence it is a useful design point for many types of sensor array systems.
Keywords :
adaptive antenna arrays; adaptive signal processing; array signal processing; direction-of-arrival estimation; interference (signal); linear antenna arrays; noise; Cramer Rao bound; adaptive beamformers; adaptive estimation; adaptive signal processing; angle estimation; array signal processing algorithms; narrowband assumption; sensor array systems; signal-to-interference-plus-noise performance; superresolution algorithms; uniform linear antenna array; zero-bandwidth assumption; Adaptive arrays; Adaptive signal processing; Algorithm design and analysis; Array signal processing; Cramer-Rao bounds; Narrowband; Sensor arrays; Signal analysis; Signal processing algorithms; Signal resolution;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.679122