Aplicações de antenas inteligentes e equalização concorrente em sistemas WCDMA/HSDPA / Applications of smart antennas and concurrent equalization on WCDMA/HSDPA systems

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

This dissertation investigates and proposes different algorithms for smart antennas and channel equalization aiming at WCDMA HSDPA downlink receivers. Considering the channel equalization issue, we propose an adaptive back-propagation algorithm with concurrent sub-systems. This equalization technique exploits particular characteristics of a WCDMA downlink signal and is based on the concurrent blind equalization technique developed by Fernando C. C. de Castro et al. For smart antennas, a multi-target space-time receiver (MT-STR) which uses K array processors and an adaptive ratio combiner is proposed. This technique has been tested under a severe soft-handover scenario assuming many interferers. The effects of mutual coupling and amplitude phase mismatch on co-linear half-wave dipole arrays for WCDMA down1ink receivers are also investigated

ASSUNTO(S)

equalizers (electronics) convoluções (matematica) telefonia celular telecommunication e adaptive signal processing telephone cellular equalizadores (eletronica) processamento de sinal adaptativo antenas ajustaveis adaptive antennas comunicações digitais

ACESSO AO ARTIGO

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