Performance of Cognitive Radio based MC-DS-CDMA system for downlink communication

The performance of a cognitive radio based Transmitter Pre-processing (TP) assisted Multi-Carrier (MC)-Code Division Multiple Access (CDMA) system over correlated frequency-selective channels for downlink communication is presented in this paper. The Singular Value Decomposition (SVD) helps us understand the need for TP. Channel State Information (CSI) is collected via feedback channels and this SVD based TP technique cancels the effects of Co-Channel Interference (CCI) and Multiple Access Interference (MAI).