Title :
Capacity analysis of DS-CDMA system with beam steering-sectorized antenna over Nakagami frequency-selective fading channels
Author :
Mar, Jeich ; Lin, Tsorng-Der
Author_Institution :
Dept. of Electr. Eng., Yuan-Ze Univ., Taoyuan, Taiwan
Abstract :
The capacity improvements achievable using beam steering-sectorized array antenna with the direct sequence code division multiple access (DS-CDMA) system for the reverse link are analyzed. A wide-sense stationary uncorrelated scattering (WSSUS) channel model and perfect power control are assumed in the analysis. The impacts of phase error of receiver and voice activation are also considered. The average error probabilities for the reverse link of the DS-CDMA system over a Nakagami frequency-selective fading channel using a partially coherent receiver are derived. The capacity of the DS-CDMA system using a beam steering-sectorized antenna is quantified and compared with that of sectorized and omnidirectional antennas. The signal-to-noise ratio derived in this paper can directly describe the interrelationships among the number of users, Nakagami fading parameter, directivity of antenna, and voice activity factor
Keywords :
beam steering; channel capacity; code division multiple access; directive antennas; electromagnetic wave scattering; error statistics; fading channels; land mobile radio; linear antenna arrays; multipath channels; multiuser channels; power control; radio links; radio receivers; radiowave propagation; spread spectrum communication; telecommunication control; DS-CDMA system; Nakagami frequency-selective fading channels; SNR; WSSUS channel model; antenna directivity; average error probabilities; beam steering-sectorized antenna; capacity analysis; direct sequence code division multiple access; linear array antenna; multipath fading; omnidirectional antenna; partially coherent receiver; perfect power control; receiver phase error; reverse link; signal-to-noise ratio; voice activation; wide-sense stationary uncorrelated scattering; Antenna arrays; Directional antennas; Directive antennas; Frequency; Frequency-selective fading channels; Linear antenna arrays; Mobile antennas; Multiaccess communication; Power system modeling; Rayleigh channels;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.734668
