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A Low Complexity Adaptive Beamforming Using the Split RLS Algorithm

Iltaeck JOO, Kiseon KIM

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Summary :

In this paper, a novel adaptive beamforming scheme is described. This scheme basically employs the GSC algorithm which is one of the famous adaptive interference suppression schemes. The implementation of the GSC algorithm requires complex computations due to the adaptive filtering. Therefore, we propose an efficient GSC algorithm based on the split RLS algorithm. In order to reduce the estimation error caused by the correlation between the splitted blocks, the modified GSC is employed with Walsh blocking matrix instead of Bi-diagonal one. In conclusion, the SINR of the proposed method is very close to the SINR obtained by the full tap solution, e.g. when the system complexity decreases nearly half, the SINR of the proposed method becomes 1 dB worse than that of full tap solution.

Publication
IEICE TRANSACTIONS on Communications Vol.E84-B No.3 pp.589-594
Publication Date
2001/03/01
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Fundamental Theories

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