Decision Feedback Techniques for Interference Cancellation in PN Spread Spectrum Communication Systems

A new type of nonlinear interference canceller with applications in PN spread spectrum communication systems is described, and performance results are given. This interference cancelling technique can be implemented in a one stage or two stage form. Both forms are discussed, and their performance compared and related to that of linear interference cancellation methods. These results demonstrate that decision feedback techniques yield significantly improved performance relative to previously reported linear interference cancellation methods.