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New adaptive beamforming algorithm employing forward/backward averaging and signal enhancement schemes

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2 Author(s)
Kyungseok Kim ; Centre for Commun. Syst. Res., Surrey Univ., Guildford, UK ; Saunders, S.R.

We introduce the new adaptive beamforming algorithm which improves the performance of an adaptive antenna array system through a forward/backward averaging scheme of the post-correlation signal vector and a signal enhancement scheme using Hermitian Toeplitzation of an array covariance matrix in DS/CDMA. A forward/backward averaging scheme decorrelates the received correlated signal after despreading in a matched filter and the Hermitian Toeplitzation scheme enhances the performance of the received signal by removing the undesired effect obtained from an array covariance matrix estimation. It is shown through simulation results that the performance of the proposed algorithm is very superior to that of the conventional Wiener maximal ratio combining (MRC) algorithm.

Published in:

Communications Letters, IEEE  (Volume:5 ,  Issue: 3 )