Transmit/Receive Beamforming in Multiuser AF Relay Networks with Opportunistic Scheduling
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چکیده
Resumo—Este artigo investiga o desempenho de outage de redes multiusuário com relays onde o terminal fonte e cada um dos nós destinos são equipados com múltiplas antenas e empregam técnicas de beamforming. Mais especificamente, assumindo canais de desvanecimento Rayleigh e um relay amplifica-e-emcaminha, uma expressão geral para a probabilidade de outage é obtida. Nossa análise leva em consideração os benefı́cios inerentes à seleção oportunı́stica em redes assistidas por relay, no qual a fonte seleciona o terminal destino com o melhor canal para a transmissão de dados. Os resultados analı́ticos são validados por simulação Monte Carlo, e os efeitos da posição do relay e configuração de antenas no desempenho do sistema são discutidos através de alguns resultados numéricos.
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تاریخ انتشار 2012