期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

OFDM认知无线电系统中多用户资源分配新算法 被引量：2

A novel resource allocation algorithm for multiuser OFDM-based cognitive radio systems
下载PDF
导出
摘要 OFDM是认知无线电系统物理层的关键技术,本文针对多用户的OFDM认知无线电系统,提出了一种联合功率、信道和比特分配的新算法,该算法将多用户资源分配映射成多维0-1背包问题,考虑了主次用户之间的干扰,引入了次用户的带宽需求,既保证了次用户对主用户干扰功率的限制,同时又满足了各个次用户的QoS。仿真结果表明,本文的算法与RC算法相比,不仅提高了系统容量,而且降低了计算量,同时还可以保证用户的QoS。 Orthogonal frequency division multiplexing（OFDM） is regarded as a key technology of physical layer for cognitive radio（CR）.In this paper,a novel algorithm of adaptive subchannel,bit and power allocation for the multiuser OFDM-based cognitive radio systems is proposed.We formulate the resource allocation problem as a multidimensional 0-1knapsack problem and adopt a low-complexity algorithm to solve it.The proposed algorithm not only considers the mutual interference（MI） between primary and secondary users,but aslo accommodates SUs＇ bandwidth demand,and satisfies each secondary user＇s Quality of Service（QoS） requirement under the constraint of primary users＇ interference power limits.Simulation results show that,in comparison with RC（Reduced Complexity） algorithm,the proposed algorithm can decrease complexity and time efficiency while satisfying each user＇s QoS requirement.
作者 赵青 朱琦
机构地区 南京邮电大学江苏省无线通信重点实验室 东南大学移动通信国家重点实验室
出处 《电路与系统学报》 CSCD 北大核心 2011年第4期44-50,共7页 Journal of Circuits and Systems
基金 国家重点基础研究发展计划资助(2007CB310607) 国家自然科学基金(60772062) 国家科技重大专项资助课题(2009ZX03003-002 2011ZX03001-006-02)
关键词 认知无线电 OFDM 资源分配 多维0-1背包 cognitive radio OFDM resource allocation multidimensional 0-1knapsack problem
分类号 TN929.5 [电子电信—通信与信息系统]
  • 相关文献

参考文献19

  • 1Federal Communications Commission.Spectrun Policy Task Force .Report of ET Docket 02-135, Available at:http://www.fcc.gov/sptf/ 2002-11.
  • 2Haykin S. Cognitive radio: Brain-empowered wireless communications [J]. IEEE Journal on Selected Areas in Communications, 2005, 23(2) :201-220.
  • 3Mitola J.Cognitive radio for flexible mobile multimedia communications [A]. IEEE International Work shop on Mobile MultimediaCommunications [C]. 1999-11.3-10.
  • 4Wenyi Wang, Renbiao Wu. Capacity Maximization for OFDM Two-Hop Relay System With Separate Power Constraints [J] IEEE TranSDetions on Vehicular Technology, 2009, 58(9): 4943-4953.
  • 5K Seong, M Mohseni, J M Cioffi. Optimal resource allocation for OFDMA downlink systems [A]. IEEE International Symposium on Information Theory [C]. 2006-07.1394-1398.
  • 6G Banal. Adaptive Bit and and Power Loading for OFDM-Based Cognitive Radio Systems [A]. IEEE International Conference on Conmunieations [C]. 2007.5137-5142.
  • 7Yonghong Zhang, Cyril Leung. Resource Allocation in an OFDM-Based Cognitive Radio System [J]. IEEE TranSDction on Communications, 2009, 57(7): 1928-1931.
  • 8T Qin, C Leung. Fair adaptive resource allocation for multiuser OFDM cognitive radio systems [AJ. Second International Conferenceon Communications and Networking in China (CHINACOM '07) [C]. Shanghai, China, 2007-08. 115-119.
  • 9T Weiss, J Hillenbrand, A Krohn. Mutual interference in OFDM-based spectrum pooling systems [A]. IEEE 59th Vehicular Technology Conference (VTC 2004-Spring) ~C]. Milan, Italy, 2004-05, 4: 1873-1877.
  • 10A J Goldsmith, S G Chua. Variable-rate variable-power MQAM for fading channels [J]. IEEE Trons Dctlon on Communications, 1997, 45(10): 1218-1230.

二级参考文献6

  • 1ZHAO Q, Sadler B. A survey of dynamic spectrum access: signal processing, networking, and regulatory policy [J]. IEEE Signal Processing Magazine, 2007, 55(5): 2294 - 2309.
  • 2Haykin S. Cognitive radio: Brain-empowered wireless communications [J]. IEEE Journal on Selected Areas in Communications, 2005, 23(2): 201- 220.
  • 3Mitola J. Cognitive radio for flexible mobile multimedia communications [C]//Proc IEEE International Workshop on Mobile Multimedia Communications. San Diego: IEEE Press, 1999: 3-10.
  • 4Weiss T, Jondral F. Spectrum pooling: An innovative strategy for the enhancement of spectrum efficiency [J]. IEEE Communications Magazine, 2004, 42(3): S8-S14.
  • 5WANG P, ZHAO M, XIAO L, et al. Power allocation in OFDM-based cognitive radio systems [C]//Proc IEEE Global Communication Conference. Wanshington D C: IEEE Press, 2007: 4061-4065.
  • 6Weiss T, Hillenbrand J, Krohn A, et al. Mutual interference in OFDM-based spectrum pooling systems [C]//Proc IEEE Vehicular Technology Conference Spring. Milan: IEEE Press, 2004:1873 - 1877.

共引文献6

同被引文献14

  • 1吴定会,李真,纪志成.基于模糊神经网络局部强化学习在Robocup中的应用[J].系统仿真学报,2007,19(16):3719-3723. 被引量：4
  • 2Federal Communications Commission. Notice of Proposed Rule Making and Order[EB/OL]. [2016-03-01]. http:// bpdg.blogs.eff.org/archives/nprm.pdf.
  • 3Mitola J, Maguire G Q. Cognitive radio: making software radios more personal[J]. IEEE Personal Communications, 1999,6(4): 13-18.
  • 4Simon Haykin. Cognitive Radio: Brain-empowered Wireless Communications[J]. IEEE JSAC, 2005,23(2): 201-220.
  • 5Weiss T A, Jondral F K. Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency[J]. IEEE Communications Magazine, 2004,42(3): 8-14.
  • 6Mao J, Xie G, Gao J, et al. Energy Efficiency Optimization for OFDM-Based Cognitive Radio Systems: A Water- Filling Factor Aided Search Method[J]. IEEE Transactions on Wireless Communications, 2013,12(5): 2366-2375.
  • 7Wang S, Ge M, Zhao W. Energy-Efficient Resource Allocation for OFDM-Based Cognitive Radio Networks[J]. IEEE Transactions on Communications, 2013,61(8): 3181-3191.
  • 8Pei E, Wang S, Zhang Z. Energy-Efficient Power Allocation for OFDM-Based Cognitive Radio Systems with Imperfect Spectrum Sensing[A]. Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference, 2011 : 1-3.
  • 9Gao Y, Xu W, Li S, et al. Energy Efficient Resource Allocation for Cognitive Radio Networks with Imperfect Spectrum Sensing[A]. IEEE 24th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2013:3318-3322.
  • 10Shen Z, Andrews J G, Evans B L. Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints[J]. IEEE Transactions on Wireless Communications, 2005,4(6): 2726-2737.

引证文献2

二级引证文献1

电路与系统学报
2011年 第4期

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