Keyholes, correlations, and capacities of multielement transmit and receive antennas

Author

Chizhik, Dmitry ; Foschini, Gerard J. ; Gans, Michael J. ; Valenzuela, Reinaldo A.

Author_Institution

Bell Labs., Holmdel, NJ, USA

Volume

1

Issue

2

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

361

Lastpage

368

Abstract

Multielement system capacities are usually thought of as limited only by correlations between elements. It is shown here that degenerate channel phenomena called "keyholes" may arise under realistic assumptions which have zero correlation between the entries of the channel matrix H and yet only a single degree of freedom. Canonical physical examples of keyholes are presented. For outdoor environments, it is shown that roof edge diffraction is perceived as a "keyhole" by a vertical base array that may be avoided by employing instead a horizontal base array

Keywords

antenna arrays; correlation methods; electromagnetic wave diffraction; matrix algebra; radiowave propagation; receiving antennas; telecommunication channels; transmitting antennas; BLAST; Bell-labs layered space-time communication; channel matrix; channel phenomena; elements correlation; horizontal base array; keyholes; multielement receive antennas; multielement system capacities; multielement transmit antennas; outdoor environments; outdoor propagation; roof edge diffraction; vertical base array; waveguide; Gallium nitride; Matrix decomposition; Narrowband; Receiving antennas; Scattering; Signal processing; Singular value decomposition; Transmitters; Transmitting antennas; Wideband;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/7693.994830

Filename

994830