期刊文献+

认知无线电中能效优化的子载波匹配策略 被引量:1

Subcarrier Pairing Strategy for Energy Efficiency Optimization in Cognitive Radio
下载PDF
导出
摘要 针对协作认知无线电系统中的能量效率问题,提出一种以最大化能量效率为目标的资源联合分配算法。在满足服务质量要求和功率约束的情况下,首先通过一种能量效率优先的启发式方案对子载波进行匹配,再引入基于拉格朗日对偶算法对其中的功率分配问题进行非线性优化,从而最大限度地提高整个系统的能量效率。仿真实验结果表明,所提算法的能量效率得到显著提升,验证了所提方案的有效性。 To improve the energy efficiency in cooperative cognitive radio system, a joint resource allocation algorithm was proposed. Firstly,a heuristic scheme with energy efficiency in priority is considered for subcarrier pairing, QoS and power constraint are satisfied. Then, the power allocation is optimized with the Lagrangian dual algorithm to maximize the system energy efficiency. Simulation results demonstrate a significant enhancement in the energy efficiency and the validity of the proposed algorithm.
出处 《计算机科学》 CSCD 北大核心 2017年第6期108-113,共6页 Computer Science
基金 浙江省自然科学基金(LQ14F020005) 国家自然科学基金(61379123 61402414) 国家科技十二五支撑计划(2012BAD10B01) 浙江省教育厅公益基金(Y201431815)资助
关键词 认知无线电 子载波匹配 功率分配 能量效率 Cognitive radio, Subcarrier pairing, Power allocation, Energy efficiency
  • 相关文献

参考文献6

二级参考文献51

  • 1叶兰兰,李君,金宁.一种新颖的多用户OFDM资源分配算法[J].中国计量学院学报,2012,23(4):379-382. 被引量:4
  • 2Knopp R and Humblet P.Information capacity and power control in single cell multiuser communications.in Proc.IEEE International Conference on Communications (ICC'95),Seattle,USA,June 1995:331-335. 被引量:1
  • 3Jang J and Lee K B.Transmit power adaptation for multiuser OFDM systems.IEEE J.on Selected Areas in Communications,2003,21(2):171-178. 被引量:1
  • 4Jang J,Lee K B,and Lee Y H.Transmit power and bit allocations for OFDM systems in a fading channel.in Proc.IEEE Global Communications Conference,San Francisco,CA,Dec.2003:283-288. 被引量:1
  • 5Wong I C,Shen Z k,and Evans B L,et al..A low complexity algorithm for proportional resource allocation in OFDMA systems.IEEE International Signal Processing Systems Workshop,Oct 13-15,2004:1-6. 被引量:1
  • 6Shen Z,Andrews J G,and Evans B L.Optimal power allocation in multiuser OFDM systems.in Proc.IEEE Global Communications Conference,San Francisco,CA,Dec.2003:337-341. 被引量:1
  • 7Goldsmith A J and Chua S G.Variable-rate variable-power MQAM for fading channels.IEEE Trans.on Commun.,1997,45(10):1218-1230. 被引量:1
  • 8EARTH.EU funded research project FP7-ICT-2009-4-247733-EARTH[EB/OL].https://www,ict-earth.eu.2012. 被引量:1
  • 9COREIA M L,ZELLER D,BLUME O,et al.Challenges and enabling technologies for energy aware mobile radio networks[J].IEEE Communications Magazine,2010,48(11):66-72. 被引量:1
  • 10AKBARI A,HOSHYAR R.Energy efficient resource allocation in wireless OFDMA system[A].21st Annual IEEE International Symposium on Personal,Indoor and Mobile Radio Communication[C].Istanbul,Turkey,2010.1731-1735. 被引量:1

共引文献36

同被引文献6

引证文献1

二级引证文献5

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部