A More Realistic System Modeling for Multiuser Two-Hop Cooperative Relay Wireless Networks
نویسندگان
چکیده
Resumo—Uma discussão acurada baseada no modelo de sistema apresentado em [1] é realizada. Mais especificamente, uma modelagem de sistema mais realı́stica para redes sem fio multiusuário com relay é proposta. A partir dessa nova modelagem, expressões exatas e em forma fechada para as probabilidades de outage de protocolos fixos decodifica-e-encaminha (F-DF) e protolocos seletivos DF (S-DF) são obtidas e uma análise dos respectivos ganhos de diversidade é feita. Tanto a análise teórica como as simulações revelam que, sob esta nova modelagem de sistema, a ordem de diversidade obtida com o protocolo F-DF permanece igual a M (M representando o número de usuários), que é a mesma que aquela apresentada em [1], enquanto que a ordem de diversidade do protocolo S-DF reduz de 2M para M + 1.
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تاریخ انتشار 2011