Outage Performance of DF-Based Cooperative Multicast in Spectrum-Sharing Cognitive Relay Networks

Outage Performance of DF-Based Cooperative Multicast in Spectrum-Sharing Cognitive Relay Networks
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频谱共享认知中继网络中基于 DF 的协作组播的中断性能

DOI:
10.1109/lcomm.2014.2327631
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发表时间:
2014-05
期刊:
IEEE Communications Letters
影响因子:
--
通讯作者:
Zhang, Hailin
Zhang, Hailin
中科院分区:
其他
文献类型:
--
作者:
Yang, Long;Chen, Jian;Kuo, Yonghong;Zhang, Hailin

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本文研究了频谱共享认知中继网络中基于解码转发的协作多播的中断性能。考虑CRN与多个主用户共存的情况,在独立非同分布瑞利衰落信道下,推导了CM中断概率的精确表达式。渐近分析表明,在CRN中,CM的分集增益取决于中继的数量,而频谱共享的情况下,只对编码增益的影响。仿真结果证实了我们的理论分析。
This letter investigates the outage performance of decode-and-forward-based cooperative multicast (CM) in spectrum-sharing cognitive relay networks (CRNs). Considering a CRN coexisted with multiple primary users, a closed-form expression for the exact outage probability of CM is derived over independently and non-identically distributed Rayleigh fading channels. The asymptotic analysis is also presented to reveal that the diversity gain of CM in CRNs is determined by the number of relays, and the spectrum-sharing scenario only has impact on coding gain. Simulation results corroborate our theoretical analysis.
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