An MMSE-based beamforming algorithm for smart antenna applied to an MC-CDMA system with co-channel interference

Authors:
Zhang Mingde;Jewoo Kim;Giwan Yoon
Affiliations:
School of Eng., Inf. & Commun. Univ., Taejon, South Korea;Dept. of Electron. Eng., Southeast Univ., Nanjing, China;Dept. of Inf. & Comput. Sci., Keio Univ., Kanagawa, Japan
Venue:
ICCS '02 Proceedings of the The 8th International Conference on Communication Systems - Volume 02
Year:
2002

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Abstract

This paper proposes an adaptive beamforming algorithm, called MC-MMSE, for adaptive antennas applied to an MC-CDMA system. A new method for updating the weight vector based on the MSE criterion is derived. Computer simulations show that the MC-MMSE algorithm is capable of rejecting co-channel interference that affects the MC-CDMA system. Thus, the BER performance of the MC-CDMA system is much higher than that of the MC-CDMA system without using adaptive antenna and that of the DS-CDMA system with adaptive antenna in multipath Rayleigh fading channel.