Title :
Impact of the Antenna Array on the Uplink Synchronous Orthogonal Multicarrier DS-CDMA RAKE System in Dispersive Fading Channels
Author :
Kim, Yong-Seok ; Hwang, Seung-Hoon
Author_Institution :
Telecommun. Network Bus. Samsung Electron., Suwon
Abstract :
In this paper, the effect of the antenna array (AA) on the performance of the uplink synchronous orthogonal multicarrier DS-CDMA RAKE system is investigated. The bit error rate performance is evaluated under multipath Rayleigh fading channels in terms of the number of antennas, the number of users, and the diversity order. The resultant BER performances are compared to those of the corresponding asynchronous uplink with the A A. The numerical results demonstrate that the additional performance improvement can be obtained by the AA in the synchronous uplink. However, the performance difference between synchronous and asynchronous transmissions decreases as the number of the antennas increases. The capacity of AA- aided orthogonal MC DS-CDMA RAKE systems can be further improved by employing the frequency domain diversity in the synchronous uplink rather than the time domain diversity.
Keywords :
Rayleigh channels; antenna arrays; code division multiple access; error statistics; multipath channels; spread spectrum communication; time-domain analysis; BER performances; DS-CDMA RAKE system; antenna array; dispersive fading channels; frequency domain diversity; multipath Rayleigh fading channels; time domain diversity; time-domain spreading aided orthogonal multicarrier system; uplink synchronous orthogonal multicarrier system; Antenna arrays; Bit error rate; Dispersion; Diversity reception; Fading; Multiaccess communication; Multiple access interference; Rayleigh channels; Time domain analysis; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.175
