Impact of imperfect estimators on W-CDMA receiver performance with MIMO antenna systems

Multiple-input multiple-output (MIMO) antenna systems have been proposed to enhance the capabilities of the high-speed downlink-shared channel (HS-DSCH) of WCDMA. To date, link simulations have been used to demonstrate the performance of this system. However, these studies have generally relied upon ideal solutions for determining the channel impulse response, minimum mean-squared-error (MMSE) filter coefficients, and SINR. In this paper, we present practical solutions for estimating the channel, MMSE filter coefficients, and SINR, and then compare the link level performance using ideal solutions to that with estimated solutions.