Signalling wavelength in an antenna array for space-time wireless over LOS channels

Signalling wavelength in an antenna array for space-time wireless over LOS channels

We consider the inter-antenna separation in a distributed antenna array. We introduce a new separation constraint with respect to the signalling wavelength, which equals the chip wavelength in DS-CDMA systems and the symbol wavelength in non-spread systems. This constraint ensures the phases of the...

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Bibliographische Detailangaben
Hauptverfasser: Zhu, G., Petersen, B.R., Colpitts, B.G.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Antenna arrays
Antennas and propagation
Bandwidth
Baseband
Distributed computing
Fading
Frequency response
Receiving antennas
Scattering
Transmitting antennas
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Beschreibung
Zusammenfassung:We consider the inter-antenna separation in a distributed antenna array. We introduce a new separation constraint with respect to the signalling wavelength, which equals the chip wavelength in DS-CDMA systems and the symbol wavelength in non-spread systems. This constraint ensures the phases of the frequency responses are exercised over 2/spl pi/ in the baseband channel matrix. The diverse phases provide a better channel matrix for signal detection. The multiuser performance improvement due to this constraint has been named as the signalling wavelength antenna placement (SWAP) gain.
DOI:10.1109/CNSR.2005.58