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A hybrid transmit diversity scheme of prefilter and transmit adaptive array in MISO wireless CDMA systems

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3 Author(s)
Sanhae Kim ; Sch. of Electron. Eng., Soongsil Univ., Seoul, South Korea ; Lee, Woncheol ; Yoan Shin

In this paper, we propose a hybrid transmit diversity scheme which combines transmit adaptive array (TxAA) and prefilter for downlink of multi-input single-output (MISO) wireless CDMA systems. By utilizing the optimum transmit antenna weight and prefilter coefficients which maximize signal-to-noise ratio at the receiver, the proposed scheme significantly outperforms the TxAA or prefilter-only system with slight increase of system complexity. Moreover, the performance gain obtained by the proposed scheme becomes significant for the channels whose multi-path components take similar average powers.

Published in:

Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual  (Volume:4 )

Date of Conference:

22-25 April 2003

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