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

Author

Zhu, Guangran ; Petersen, Brent R. ; Colpitts, Bruce G.

Author_Institution

Dept. of Electr. & Comput. Eng., New Brunswick Univ., Fredericton, NB, Canada

fYear

2005

fDate

16-18 May 2005

Firstpage

69

Lastpage

73

Abstract

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 2π 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.

Keywords

antenna arrays; code division multiple access; frequency response; matrix algebra; radiocommunication; signal detection; spread spectrum communication; telecommunication channels; telecommunication signalling; DS-CDMA system; LOS channel; SWAP; baseband channel matrix; direct sequence code division multiple access; distributed antenna array; frequency response; inter-antenna separation; multiuser performance; signal detection; signalling wavelength antenna placement; space-time wireless; Antenna arrays; Antennas and propagation; Bandwidth; Baseband; Distributed computing; Fading; Frequency response; Receiving antennas; Scattering; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Networks and Services Research Conference, 2005. Proceedings of the 3rd Annual

Print_ISBN

0-7695-2333-1

Type

conf

DOI

10.1109/CNSR.2005.58

Filename

1429947