Abstract:In this article we analyze the impact of channel estimation by means of the seconday common pilot channel (S-CPICH) on linear precoding in W-CDMA systems. The pilot sequences on the S-CPICH are transmitted over a fixed grid of beams, causing a systematic channel estimation error at the receiver. Consequently, the adapted rake receiver coefficients will be cormpted due to the use of the S-CPICH, which will lead to an incoherent superposition of the signal components when conventional adaptive space time precode… Show more
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