Title :
A unified approach to the analysis of multicarrier DS-CDMA over Nakagami-m fading channels
Author :
Yang, Lie-Liang ; Hanzo, Lajos
Author_Institution :
Dept. of Electron. & Comput. Sci., Southampton Univ., UK
Abstract :
A class of unified multicarrier DS-CDMA (MC DS-CDMA) schemes defined and its performance is considered over multipath Nakagami-m fading channels. The spacing between two adjacent subcarriers of the unified MC DS-CDMA scheme is a variable, allowing us to gain insight into the effects of the spacing on the bit error rate (BER) performance of MC DS-CDMA systems. This unified MC DS-CDMA scheme includes the subclasses of multitone DS-CDMA and orthogonal MC DS-CDMA as special cases. The optimum spacing of the MC DS-CDMA system required for achieving the minimum BER is investigated and the BER performance of the system having optimum spacing is evaluated. The resultant BER is compared with that of both multitone DS-CDMA and orthogonal MC DS-CDMA
Keywords :
OFDM modulation; code division multiple access; error statistics; fading; multiuser channels; spread spectrum communication; BER performance; MC DS-CDMA; bit error rate; code-division multiple-access; multicarrier DS-CDMA; multipath Nakagami-m fading channels; multitone DS-CDMA; optimum spacing; orthogonal MC DS-CDMA; orthogonal frequency division multiplexing; subcarriers; Bandwidth; Bit error rate; Fading; Fast Fourier transforms; Frequency; Multiaccess communication; Multicarrier code division multiple access; OFDM modulation; Performance gain; Signal generators;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.966318
