A Linear Receiver for WCDMA Downlink Exploiting the Coloration of the Interference

In 3rd 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 receiver input. In this 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.