Title :
Down-link beamforming effects on the code orthogonality in UTRA-FDD systems
Author :
Hunukumbure, M. ; Beach, M. ; Allen, B.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
A novel approach in quantifying code orthogonality factor for UTRA-FDD systems is extended in this paper to include the impact of down-link beamforming. The effects of fixed beamforming on code orthogonality is analysed through the aid of real channel data taken from urban cellular environments. The results show a significant overall improvement in code orthogonality with beamforming, especially in the case of an urban large cell.
Keywords :
3G mobile communication; array signal processing; cellular radio; code division multiple access; multiuser channels; radio links; spread spectrum communication; 3G UTRA-FDD standards; DS-CDMA; UTRA-FDD systems; channel estimation; code orthogonality; code orthogonality factor; down-link beamforming effects; real channel data; urban cellular environments; Array signal processing; Code standards; Degradation; Diversity methods; Diversity reception; Educational institutions; Mathematical model; Multiple access interference; RAKE receivers; Synchronous generators;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on
Print_ISBN :
0-7803-7589-0
DOI :
10.1109/PIMRC.2002.1046711
