| Summary: | 碩士 === 國立中正大學 === 通訊工程研究所 === 90 === In mobile radio systems, multipath fading causes system performance degradation. In WCDMA system, a new technique, called Space Time block coding based Transmit antenna Diversity (STTD), is provided to overcome multipath fading and improve system performance and capacity. However, space time block decoding algorithms so far are designed for flat fading channels in the literature. In this paper we propose two new schemes, with zero forcing detector and orthogonal detector, for the multipath fading channels. We show that for dual antennas with STTD encoding, either zero forcing detector or orthogonal detector at the mobile gives better performance then single antenna system by computer simulation.
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