多信道认知无线电频谱感知次用户和功率分配
发布时间:2018-09-07 10:10
【摘要】:为提高多信道认知无线电的吞吐量,提出了协作频谱感知子信道次用户和传输功率的联合分配算法.该算法基于主用户的存在状态,在约束次用户协作检测概率和总功率的基础上,以最大化次用户所有子信道的吞吐量总和为目标,通过交替方向优化获得子信道次用户和传输功率的联合分配.仿真结果表明:文中提出的联合分配算法通过较少的迭代次数就可以获得最优值,并且能够根据子信道状态动态地分配子信道次用户和传输功率,提高了次用户的吞吐量.
[Abstract]:In order to improve the throughput of multi-channel cognitive radio, a cooperative spectrum sensing sub-channel sub-user and transmission power allocation algorithm is proposed. Based on the existing state of the primary user, the algorithm aims at maximizing the total throughput of all subchannels of the secondary user on the basis of constrained cooperative detection probability and total power of the secondary user. The joint allocation of subchannel secondary users and transmission power is obtained by alternating direction optimization. Simulation results show that the proposed joint allocation algorithm can obtain the optimal value by less iterations, and can dynamically allocate sub-channel secondary users and transmission power according to the sub-channel state, thus improving the throughput of secondary users.
【作者单位】: 南京航空航天大学航天学院;
【基金】:国家自然科学基金资助项目(61102069,61301105) 南京航空航天大学引进人才科研启动基金资助项目(56YAH13029) 南京航空航天大学青年科技创新基金资助项目(NS2013085)
【分类号】:TN925
[Abstract]:In order to improve the throughput of multi-channel cognitive radio, a cooperative spectrum sensing sub-channel sub-user and transmission power allocation algorithm is proposed. Based on the existing state of the primary user, the algorithm aims at maximizing the total throughput of all subchannels of the secondary user on the basis of constrained cooperative detection probability and total power of the secondary user. The joint allocation of subchannel secondary users and transmission power is obtained by alternating direction optimization. Simulation results show that the proposed joint allocation algorithm can obtain the optimal value by less iterations, and can dynamically allocate sub-channel secondary users and transmission power according to the sub-channel state, thus improving the throughput of secondary users.
【作者单位】: 南京航空航天大学航天学院;
【基金】:国家自然科学基金资助项目(61102069,61301105) 南京航空航天大学引进人才科研启动基金资助项目(56YAH13029) 南京航空航天大学青年科技创新基金资助项目(NS2013085)
【分类号】:TN925
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1 唐s,
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