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Sociedade Brasileira de Telecomunicações

Um Novo Algoritmo Adaptativo de Posto Reduzido para Conformação de Feixe em Sistemas de Comunicações Móveis


This paper presents a new algorithm for beamforming in mobile communication systems. This algorithm is based on the linearly-constrained minimum-variance (LCMV) approach and also on a rank-reducing strategy. In contrast to another reduced-rank algorithm from the literature, the proposed one satisfies the unit-gain constraint of the LCMV problem regardless of the scenario and the initial conditions of the problem. Thus, adequate values of transmission power are obtained for different operating conditions, resulting in high values of signal-to-interference-plus-noise ratio at the output of the antenna array.

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