Capacity Maximization and Transmission Rates Optimization for Relay Assisted Wireless Multicast
Capacity Maximization and Transmission Rates Optimization for Relay Assisted Wireless Multicast
复制标题
中继辅助无线组播的容量最大化和传输速率优化
DOI:
10.1109/lcomm.2012.090312.120782
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发表时间:
2012-09
期刊:
影响因子:
--
通讯作者:
褚晓理
中科院分区:
文献类型:
--
作者:
王海波;项宏亮;褚晓理
In this letter, we maximize the multicast capacity of a cellular system with dedicated decode-and-forward (DF) relays, by jointly optimizing transmission data rates of the base station (BS) and the relays subject to an average outage constraint in Rayleigh fading channels. The optimal transmission rates of the BS and relays and the optimal relay locations are obtained based on an outage probability analysis for the relay-assisted multicast. Numerical results show that relay-aided multicast significantly outperforms direct multicast, and the best transmission strategy is for the BS and dedicated relays to transmit at the same rate.
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