能量有效性频谱感知和传输方案的联合设计  

Schemes of Joint Design of Energy-Efficient Spectrum Sensing and Transmission

作　　者：邱涛[1] 宋涛[1] 许文俊[1] 田宝玉[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876

出　　处：《北京邮电大学学报》2012年第5期54-58,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家重点基础研究计划项目(2009CB320401);国家自然科学基金项目(61101117);中国高校博士点基金项目(20090005110003);国家重大专项项目(2010ZX03003-001;2012ZX03004005002);北京邮电大学青年基金项目(BUPT2012RC0112)

摘　　要：为了实现认知无线网络的能量有效性传输,在混合频谱共享方式下对频谱感知和传输功率分配的联合优化方案进行研究.首先将混合频谱共享方式下的能量有效性传输描述为一个多约束优化问题,并从理论上分析了最优的频谱感知和功率分配方案.结合理论分析结果,设计了低复杂度的联合优化迭代方案以逼近优化问题的最优解.仿真结果表明所提方案的性能与最优方案非常接近,而方案复杂度却大大降低.In order to realize energy-efficient transmission in cognitive radio networks,a method of the joint optimization scheme of spectrum sensing and transmission power allocation under hybrid spectrum sharing is investigated.Firstly,the energy-efficient transmission under hybrid spectrum sharing is formulated as an optimization problem with multiple constraints.The optimal spectrum sensing and power allocation schemes are analyzed.And a low-complexity joint optimization iterative algorithm is proposed to approximate the optimal solution as well.Simulation indicates that the performance of the proposed algorithm is very closed to the optimal algorithm,but with the greatly decreased complexity.

关 键 词：混合频谱共享 能量有效性 频谱感知 联合优化 

分 类 号：TN929.53[电子电信—通信与信息系统]