A linear receiver for WCDMA downlink exploiting the coloration of the interference

In third-generation mobile radio systems based on direct-sequence code-division multiple access, the employment of more sophisticated demodulation techniques is indispensable for the provision of high data rates with a reasonable error performance. In this paper, we propose a modification of a recently introduced scheme, which exploits the coloration of the interference at the receiver input. In the approach, the maximum likelihood criterion is used to derive a time-variant equalizer, which outperforms the RAKE receiver significantly. With the modification proposed the performance gain can be increased by several dB.