Performance Analysis for OFDM-CDMA With Joint Frequency-Time Spreading
Kan Zheng, Gang Zeng, Weihan Wang · IEEE Transactions on Broadcasting · 2005
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.