Paper Info
Title
Effect of angle spread on system capacity in DS/CDMA cellular system using adaptive array antenna
Abstract
This paper evaluates the effect of angle spread on the system capacity for a DS/CDMA system using a delay profile measurement based adaptive array antenna combined with beam pattern selection diversity and carrier-to-interference plus noise (CINR) based transmit power control (TPC) techniques. In the proposed system, beam directivity is controlled by the delay profiles for each terminal measured in each antenna element. Moreover, to reduce the number of computation for the beam directivity control, the proposed system calculates the optimum beam directivity for only a limited number of terminals that locates far from the base station, and signals from the rest of the terminals are demodulated by selecting one of the most reliable adaptive array combined signals. This technique is called beam pattern diversity. For the evaluation of impact of the angle spread of the multipath components on the capacity of DS/CDMA systems with an adaptive array antenna, computer simulation is conducted. The results show that the proposed scheme gives better performance than the sector antenna systems under practical angle spread conditions; i.e. less than 10 degree, with relatively a small number of computation
Year
DOI
Venue
2000
10.1109/PIMRC.2000.881398
Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium
Keywords
Field
DocType
Rayleigh channels,adaptive antenna arrays,antenna radiation patterns,array signal processing,cellular radio,channel capacity,code division multiple access,delays,digital simulation,direction-of-arrival estimation,directive antennas,diversity reception,interference suppression,multipath channels,multiuser channels,radiofrequency interference,spread spectrum communication,DS/CDMA cellular system,Gaussian angle of arrival model,adaptive array antenna,angle spread,antenna element,base station,beam directivity control,beam pattern selection diversity,carrier-to-interference plus noise,computer simulation,delay profile measurement,demodulation,double spike Rayleigh model,interference suppression,multipath components,optimum beam directivity,performance,propagation path characteristics,sector antenna system,system capacity,transmit power control
Multipath propagation,Base station,Transmitter power output,Telecommunications,Directivity,Computer science,Real-time computing,Electronic engineering,Sector antenna,Adaptive control,Code division multiple access,Spread spectrum
Conference
Volume
ISBN
Citations 
1
0-7803-6463-5
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Katsumi Watanabe11816.97
Seiichi Sampei215939.74
Norihiko Morinaga312122.81