Advanced detection scheme for multicode CDMA with V-BLAST architecture

Multicode CDMA with V-BLAST architecture is an attractive scheme to achieve high data rate transmission. We propose an advanced detection scheme, order partial parallel interference cancellation with decision feedback (DF-OPPIC), to combat co-antenna interference and multiple access interference in the system. Compared with conventional V-BLAST detection algorithms, the scheme has better performance on the frame error ratio in flat Rayleigh fading channel and multipath Rayleigh fading channel. Moreover, due to avoiding calculating pseudo-inverse and optimal detection order at every time of iteration, the scheme has lower arithmetic complexity.