Blind detection of multirate asynchronous CDMA signals using super-exponential methods

In this paper, we consider the blind detection of multirate CDMA signals by applying a fast convergence blind deconvolution algorithm-the super-exponential algorithm. Here only the desired user´s spreading code is assumed to be known. Compared with existing high-order statistics based blind multiuser detectors, when the system actually converges to the desired user (generally needs SNR≥15 dB for both existing methods and the proposed approach), the proposed approach can achieve much better performance with significantly faster convergence speed.