Title :
Multi-Carrier DS-CDMA Transmission with Frequency-domain Equalization
Author :
Tanaka, Ken ; Tomeba, Hiromichi ; Adachi, Fumiyuki
Author_Institution :
Dept. of Electr. & Commun. Eng., Tohoku Univ.
Abstract :
MC DS-CDMA is a combination of OFDM and time-domain spreading, while MC-CDMA is a combination of OFDM and frequency-domain spreading. In MC-CDMA, a good bit error rate (BER) performance can be achieved by using frequency-domain equalization (FDE), since the frequency diversity gain is obtained. On the other hand, the conventional MC DS-CDMA cannot obtain the frequency diversity gain. In this paper, the authors propose MC DS-CDMA that can obtain the frequency diversity gain by applying FDE. The conditional BER analysis is presented. The theoretical average BER performance in a frequency-selective Rayleigh fading channel is evaluated by Monte-Carlo numerical computation method using the derived conditional BER and is confirmed by computer simulation of the MC DS-CDMA signal transmission.
Keywords :
Monte Carlo methods; Rayleigh channels; code division multiple access; error statistics; spread spectrum communication; MC DS-CDMA; Monte-Carlo numerical computation; OFDM; Rayleigh fading channel; bit error rate; frequency diversity gain; frequency-domain equalization; frequency-domain spreading; multi-carrier direct sequence code division multiple access; time-domain spreading; Bit error rate; Computer simulation; Fading; Frequency diversity; Frequency domain analysis; Multiaccess communication; Multicarrier code division multiple access; OFDM; Performance gain; Time domain analysis;
Conference_Titel :
Wireless Communications and Networking Conference, 2007.WCNC 2007. IEEE
Conference_Location :
Kowloon
Print_ISBN :
1-4244-0658-7
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2007.410
