HYBRID INTERFERENCE CANCELLATION RECEIVER FOR DS-CDMA SYSTEMS L.Nithyanandan and P.Dananjayan

In a CDMA system, the performance of channel matched filter receivers are limited by the presence of multi-user interference. Hence receivers must be capable of suppressing these interferences. Interference suppression or interference cancellation works by subtracting the interfering users from the received signal, thus allowing an improved error rate for the user of interest. In this paper a hybrid interference cancellation receiver is designed by combining the successive and parallel interference cancellation algorithms, so that the advantages of both the schemes are utilized effectively. The hybrid interference cancellation scheme results in a simple, faster and reliable receiver. With the help of simulations, it is shown that this hybrid approach outperforms the other multi-user detection schemes.