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    Performance analysis of downlink smart antenna system with auxiliary pilot in CDMA2000 IX

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    The auxiliary pilot has been defined in the CDMA2000 IX standard for the purpose of providing an accurate channel estimation to each of mobile terminals during the downlink beamforming. In this letter, we first analyze the multipath signal environment to verify under exactly what conditions the auxiliary pilot becomes inevitable and what happens if the auxiliary pilot is not assigned to each of the subscribers. Then, we present a systematic procedure of applying the auxiliary pilot together with a proper call processing method to handle the auxiliary pilot. Performance analysis is also given through the computer simulations and the experimental data obtained from the smart antenna base transceiver station (SA BTS) that has been implemented for the CDMA2000 IX standard.
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    The auxiliary pilot has been defined in the CDMA2000 IX standard for the purpose of providing an accurate channel estimation to each of mobile terminals during the downlink beamforming. In this letter, we first analyze the multipath signal environment...

    The auxiliary pilot has been defined in the CDMA2000 IX standard for the purpose of providing an accurate channel estimation to each of mobile terminals during the downlink beamforming. In this letter, we first analyze the multipath signal environment to verify under exactly what conditions the auxiliary pilot becomes inevitable and what happens if the auxiliary pilot is not assigned to each of the subscribers. Then, we present a systematic procedure of applying the auxiliary pilot together with a proper call processing method to handle the auxiliary pilot. Performance analysis is also given through the computer simulations and the experimental data obtained from the smart antenna base transceiver station (SA BTS) that has been implemented for the CDMA2000 IX standard.

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