首页> 外文学位 >Design of Optimal Frameworks for Wideband/Multichannel Spectrum Sensing in Cognitive Radio Networks.
【24h】

Design of Optimal Frameworks for Wideband/Multichannel Spectrum Sensing in Cognitive Radio Networks.

机译:认知无线电网络中宽带/多通道频谱感知的最佳框架设计。

获取原文
获取原文并翻译 | 示例

摘要

Several optimal detection frameworks for wideband/multichannel spectrum sensing in cognitive radio networks are proposed. All frameworks search for multiple secondary transmission opportunities over a number of narrowband channels, enhancing the secondary network performance while respecting the primary network integrity and keeping the interference limited. Considering a periodic sensing scheme with either uniform or non-uniform channel sensing durations, the detection problems are formulated as joint optimization of the sensing duration(s) and individual detector parameters to maximize the aggregate achievable secondary throughput capacity given some bounds/limits on the overall interference imposed on the primary network. It is demonstrated that all the formulated optimization problems can be solved using "convex" optimization if certain practical constraints are applied. Simulation results attest that the proposed frameworks achieve superior performance compared to contemporary frameworks. To realize efficient implementation, an iterative low-complexity algorithm which solves one of the optimization problems with much lower complexity compared to other numerical methods is presented. It is established that the iteration-complexity and the complexity-per-iteration of the proposed algorithm increases linearly with the number of optimization variables (i.e. the number of narrowband channels).
机译:提出了几种用于认知无线电网络中宽带/多通道频谱感知的最佳检测框架。所有框架都在许多窄带信道上搜索多个次要传输机会,从而提高了次要网络的性能,同时尊重了主要网络的完整性并限制了干扰。考虑具有均匀或不均匀信道感测持续时间的周期性感测方案,将检测问题表述为感测持续时间和各个检测器参数的联合优化,以在给定一些限制/限制的情况下最大化可达到的总二次吞吐能力对主网络施加的总体干扰。结果表明,如果应用某些实际约束,则可以使用“凸”优化来解决所有公式化的优化问题。仿真结果证明,与现代框架相比,所提出的框架具有更高的性能。为了实现有效的实现,提出了一种迭代的低复杂度算法,该算法以比其他数值方法低得多的复杂度解决了一个优化问题。已经确定,所提出的算法的迭代复杂度和每次迭代的复杂度随着优化变量的数量(即窄带信道的数量)线性增加。

著录项

  • 作者

    Hoseini, Pedram Paysarvi.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Electronics and Electrical.
  • 学位 M.Sc.
  • 年度 2011
  • 页码 90 p.
  • 总页数 90
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号