认知无线电网络中面向多通道的协作感知优化模型及启发式求解方法

杨威; 班冬松; 李焕忠; 窦文华

doi:1000-436X(2011)11-0118-08

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认知无线电网络中面向多通道的协作感知优化模型及启发式求解方法

学术论文 | 更新时间：2024-06-05

- 认知无线电网络中面向多通道的协作感知优化模型及启发式求解方法
- Optimization model and heuristic solution method for multi-channel cooperative sensing in cognitive radio networks
- 通信学报 2011年32卷第11期页码：118-125
- 作者机构：
- 作者简介：
  
  [ "杨威（1982-），男，辽宁台安人，国防科学技术大学博士生，主要研究方向为协作认知无线电网络资源优化模型及算法。" ]
  [ "班冬松（1982-），男，黑龙江齐齐哈尔人，国防科学技术大学博士生，主要研究方向为无线传感器网络覆盖模型与优化算法。" ]
  [ "李焕忠（1984-），男，广西宾阳人，国防科学技术大学博士生，主要研究方向为随机无线网络演算及编码。" ]
  [ "窦文华（1946-），男，山西平定人，国防科学技术大学教授、博士生导师，主要研究方向为高级计算机网络。" ]
- 基金信息：
  
  国家自然科学基金资助项目;The National Natural Science Foundation of China(60903223)
- DOI：1000-436X(2011)11-0118-08
  中图分类号： TP393
- 网络出版日期：2011-11，
  
  纸质出版日期：2011-11-25
- 稿件说明：
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杨威, 班冬松, 李焕忠, 等. 认知无线电网络中面向多通道的协作感知优化模型及启发式求解方法[J]. 通信学报, 2011,32(11):118-125.

Wei YANG, Dong-song BAN, Huan-zhong LI, et al. Optimization model and heuristic solution method for multi-channel cooperative sensing in cognitive radio networks[J]. Journal on communications, 2011, 32(11): 118-125.
杨威, 班冬松, 李焕忠, 等. 认知无线电网络中面向多通道的协作感知优化模型及启发式求解方法[J]. 通信学报, 2011,32(11):118-125. DOI： 1000-436X(2011)11-0118-08.

Wei YANG, Dong-song BAN, Huan-zhong LI, et al. Optimization model and heuristic solution method for multi-channel cooperative sensing in cognitive radio networks[J]. Journal on communications, 2011, 32(11): 118-125. DOI： 1000-436X(2011)11-0118-08.

摘要

针对认知无线电网络中多个认知节点对多个通道进行协作感知的系统建立优化模型。该模型在各通道错误接入概率小于给定阈值的约束下，以最大化系统吞吐量为目标，对包括感知时间和各SU对各通道检测结果的权重系数在内的参数进行优化，是一个约束非线性规划模型。为求解该模型，提出了一种启发式的顺序参数优化方法（SPO

sequential parameters optimization method）。该方法首先推导出优化问题的下界并转而对该下界进行优化，随后通过构建了一系列仅含有权重系数的子优化问题并采用拉格朗日方法求解出优化的权重系数，待权重系数确定后，最后采用黄金分割搜索法确定优化的感知时间。仿真实验的结果表明了SPO的有效性并验证了提出的模型在提高系统吞吐量方面的优势。

Abstract

An optimization model under the scenario where multi-channels are cooperatively sensed and used by multi-secondary users (SU) was proposed.The model aims to maximize the system throughput and optimizes the parameters including the sensing time and the weight coefficient of the sampling result of each SU for each channel

meanwhile the false access probability for each channel must not violate the given constraints.To solve this non-linear optimization model

a sequential parameters optimization method(SPO)was proposed.The method begins with deriving the lower bound of the objective function of the optimization model.Then it maximizes this lower bound by optimizing the weight coefficients through solving a series of sub-optimal problems using Lagrange method

and finally finding an optimized sensing time parameter by the golden search algorithm.Extensive experiments by simulations demonstrate the effectiveness of the proposed method and the advantage of the proposed model on improving the system throughput.

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Keywords

references

MITOLA J III . Cognitive Radio:an Integrated Agent Architecture for Software Defined Radio [D ] . Sweden:Royal Institute of Technology (KTH) , 2000 .

PEH E C Y , LIANG Y C , GUAN Y L , et al . Optimization of cooperative sensing in cognitive radio networks:a sensing-throughput tradeoff view [J ] . IEEE Transactions on Vehicular Technology , 2009 , 58 ( 9 ): 5294 - 5299 .

QUAN Z , CUI S , SAYED A H , et al . Optimal multiband joint detection for spectrum sensing in cognitive radio networks [J ] . IEEE Transactions on Signal Processing , 2009 , 57 ( 3 ): 1128 - 1140 .

ZHANG W , MALLIK R K , LETAIEF K B . Cooperative spectrum sensing optimization in cognitive radio networks [A ] . Proc of 2008 Int’l Conference on Communications(ICC) [C ] . Beijing,China , 2008 . 3411 - 3415 .

SAAD W , HAN Z , DEBBAH M , et al . Coalitional games for distributed collaborative spectrum sensing in cognitive radio networks [A ] . Proc of the 28th Int’l Conference on Computer Communications (INFOCOM) [C ] . Rio de Janeiro,Brazil , 2009 . 2114 - 2122 .

ARSHAD K , IMRAN M A , MOESSNER K . Collaborative spectrum sensing optimization algorithms for cognitive radio networks [J ] . International Journal of Digital Multimedia Broadcasting , 2010 ,Article ID 424036.

FAN R , JIANG H , GUO Q , et al . Joint optimal cooperative sensing and resource allocation in multi-channel cognitive radio networks [J ] . IEEE Transactions on Vehicular Technology , 2011 , 60 ( 2 ): 722 - 729 .

SANNA M , MURRONI M . Opportunistic wideband spectrum sensing for cognitive radios with genetic optimization [A ] . Proc of 2010 Int’l Conference on Communications(ICC) [C ] . Cape Town , 2010 . 1 - 5 .

SANNA M , MURRONI M . Nonconvex optimization of collaborative multiband spectrum sensing for cognitive radios with genetic algorithms [J ] . International Journal of Digital Multimedia Broadcasting , 2010 ,Article ID 531857.

SAYED A H . Fundamentals of Adaptive Filtering [M ] . New York : Wiley , 2003 .

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