Channel estimation in space time block coded transmit antenna diversity for WCDMA

摘要

A circuit is designed with an estimate circuit (422) coupled to receive a plurality of input signals (R1_j ,R2_j ) from an external source along a plurality of paths (j) and at least one known signal (S1). The at least one known signal has a predetermined value. The estimate circuit produces a plurality of estimate signals ( alpha 1_j , alpha 2_j ) corresponding to each respective signal path in response to the plurality of input signals and the at least one known signal. A correction circuit (350) is coupled to receive the plurality of estimate signals and the plurality of input signals. The correction circuit produces a first symbol estimate (Sm) in response to the plurality of estimate signals and the plurality of input signals. The correction circuit produces a second symbol estimate (Sn) in response to the plurality of estimate signals and the plurality of input signals. <IMAGE>