Lifetime maximization of secondary cooperative systems in underlay cognitive radio networks

Hao Yu, Li-Chung Lo, Wan-Jen Huang
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引用次数: 1

Abstract

In this work, we consider relay selection strategy in an amplify-and-forward cooperative cognitive ratio system in order to prolong lifetime of the energy-constrained relay network. The network lifetime considered in this work is based on the outage probability of the secondary cooperative system. Not only the channel condition of each relay, selection of best relay has to satisfy the interference constraint for primary user as well as the residual power of each relay. Here, we proposed four strategies to select the relay for prolonging the lifetime depending on the channel state information (CSI) and residual energy information (REI). From the simulation results, the minimum outage probability strategy (MOP) performs the best among four strategies.
底层认知无线电网络中二次协作系统的生命周期最大化
为了延长能量受限的中继网络的寿命,研究了放大转发合作认知比系统中的中继选择策略。本文考虑的网络生存期是基于二次协作系统的中断概率。最佳中继的选择不仅要满足各中继的信道条件,还要满足主用户的干扰约束和各中继的剩余功率。在此,我们提出了四种基于信道状态信息(CSI)和剩余能量信息(REI)来选择延长寿命的中继的策略。从仿真结果来看,最小中断概率策略(MOP)在四种策略中性能最好。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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