Title :
Performance analysis for OFDM-CDMA with joint frequency-time spreading
Author :
Zheng, Kan ; Zeng, Guoyan ; Wang, Wenbo
Author_Institution :
Sch. of Telecommun. Eng., Beijing Univ. of Posts & Telecommun., China
fDate :
3/1/2005 12:00:00 AM
Abstract :
In this paper, a novel OFDM-CDMA system with joint time-frequency spreading methods is proposed. The average bit error probability of the proposed system using maximum-ratio combining (MRC) is derived for a frequency-selective fading channel and that of conventional MC-CDMA is also presented for comparison. Numerical analysis and simulation results indicate that the proposed system outperforms MC-CDMA system.
Keywords :
OFDM modulation; code division multiple access; error statistics; fading channels; probability; CDMA; MRC; OFDM; average bit error probability; code division multiple access; frequency-selective fading channel; joint frequency-time spreading; maximum-ratio combining; orthogonal frequency division multiplexing; Digital audio broadcasting; Digital video broadcasting; Fading; Frequency diversity; Multiaccess communication; Multicarrier code division multiple access; Numerical simulation; OFDM modulation; Performance analysis; Time frequency analysis; CDMA; OFDM; maximum ratio combining; multiple access;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2004.839609
