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.
出处
《电子技术应用》
北大核心
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)
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
cognitive radio networks
power allocation
energy efficiency
effective throughput profits
