吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 1498-1505.doi: 10.7964/jdxbgxb201405043
陈健, 樊光辉, 阔永红
CHEN Jian,FAN Guang-hui,KUO Yong-hong
摘要: 在认知多用户中继网络系统场景下,针对时变信道完全DF中继两跳传输的差异性问题,采用纳什议价公平性准则效用函数,提出了联合用户传输模式选择、子载波配对、信道分配和功率分配的分层优化模型。利用拉格朗日对偶理论实现模型分层求解,在降低算法复杂度的同时提升了系统效用及吞吐量。仿真结果表明:相对于完全中继、直传网络和非载波配对的中继网络,所提算法在兼顾用户速率需求和公平性的同时可使系统吞吐量获得较大提高。
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