Effects of unresolvable multipath on mobile terminals with antenna diversity in WCDMA system

In this paper we examine the effect of the unresolvable multipath on the performance of mobile unit that uses antenna diversity scheme for three different types of tracking algorithms. In the first algorithm, the tracking is performed on the basis of the single antenna output. The second algorithm involves RAKE like tracking, where all antenna outputs are combined before tracking. The last algorithm is based on independent tracking for each antenna. It has been shown that the best performance in terms of bit error rate at the receiver is achieved with independent tracking in the presence of unresolvable multipath.