Title :
Code reassignment scheme on CDMA smart antenna systems
Author :
Kuwahara, Mikio ; Doi, Nobukazu
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
This paper proposed code reassignment scheme on CDMA smart antenna systems. The proposed scheme suppresses multi-channel access interference (MAI) caused by the shortage of an orthogonal spreading code in a sector. Computer simulation shows an 18% capacity gain and 3 dB reduction of Tx power on the down link
Keywords :
Rayleigh channels; adaptive antenna arrays; adjacent channel interference; array signal processing; cellular radio; code division multiple access; interference suppression; multipath channels; multiuser channels; radio links; spread spectrum communication; 3rd generation mobile communication systems; CDMA smart antenna systems; Rayleigh fading; capacity gain; cellular radio; code reassignment; computer simulation; double gap multipath model; down link; inter-channel interference; lognormal distribution; multi-channel access interference suppression; multipath model; orthogonal spreading code; shadowing; spatio-temporal correlation; spreading code sequence; transmitter power reduction; Antennas and propagation; Computer simulation; Interchannel interference; Interference suppression; Laboratories; Multiaccess communication; Multiple access interference; Propagation delay; Timing; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851650
