An efficient downlink beamforming scheme in FDD-CDMA system

Downlink beamforming schemes using MUSIC algorithm have flaws of low speed, less user number than that of antenna array elements. In this paper we combine adaptive antenna with RAKE receiver of FDD-CDMA system effectively and adopt spatial spectrum estimation algorithm to perform downlink beamforming. Simulation shows that compared with MUSIC schemes, this scheme achieves a great increase in speed, user number and accuracy.

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