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On the narrow-band assumption for array signal processing

 
: Boche, H.; Schubert, M.

Archiv für Elektronik und Übertragungstechnik 53 (1999), No.2, pp.117-120
ISSN: 1434-8411
English
Journal Article
Fraunhofer HHI ()
antenna arrays; array signal processing; error analysis; land mobile radio; narrow-band assumption; mobile communications; channel bandwidth; system performance

Abstract
The deployment of antenna arrays has been suggested for mobile communications systems to overcome the problem of limited channel bandwidth. However, signal processing has to be carried out very precisely in order to obtain satisfying results. Existing algorithms are mostly based on the assumption of narrow-band signals. The deviation of this assumption induces an error and consequently deteriorates the system performance. In this paper we present an upper-bound for the resulting error which is shown to be best possible. Finally, simulations are carried out to verify the result.

: http://publica.fraunhofer.de/documents/N-13057.html