一种基于能效的最优功率分配策略  

Optimal power allocation strategy based on energy efficiency

作　　者：苏慧慧[1] 杨守义[1] 穆晓敏[1] 宁冰[1] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001

出　　处：《电子技术应用》2013年第11期114-117,共4页Application of Electronic Technique

基　　金：国家自然科学基金(61271421);河南省教育厅科学技术研究重点项目(13A510636)

摘　　要：为提高认知无线电系统的能量效率,避免功率浪费,提出了一种新的性能衡量标准———有效吞吐量收益。在基于感知的系统模型中,以有效吞吐量收益为目标函数,设计了认知用户的传输策略,并研究了认知用户在不同环境下功率传输最优策略的选择问题。仿真结果表明,所提标准的能量效率比传统标准的能量效率有明显提高,有效地缓解了信息传输过程中的能量浪费。In order to improve power utilization of cognitive radio networks, and to avoid the waste of power, in this paper,a new performance metric：effective throughput profits, that is. In sensing-based model ,it takes effective throughput as the objective function, designs the transmission policy of cognitive users, and also studies how to choose the transmission policy in different envi- ronment .Our results validate the advantages of our new performance metric in improving power utilization of cognitive radio net- works and effectively relieves the waste of power in the process of information transmission.

关 键 词：认知无线电系统 功率分配 能量效率 有效吞吐量收益 

分 类 号：TN929.53[电子电信—通信与信息系统]