| 认知Ad hoc网络的频谱接入跨层设计方案* |
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| 引用本文： | 杜奕航,王可人,王文闯.认知Ad hoc网络的频谱接入跨层设计方案*[J].计算机应用研究,2017,34(8). |
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| 作者姓名： | 杜奕航 王可人 王文闯 |
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| 作者单位： | 电子工程学院,电子工程学院,61651部队 |
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| 基金项目： | 安徽省自然科学基金青年科学(No.1608085QF143) |
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| 摘 要： | 为提高分布式认知Ad hoc网络的频谱感知精准性和能量有效性，提出了一种基于能量效率的频谱接入跨层设计方案。首先通过基于感知因子的完全二分图分解法对网络进行分簇，进而在簇内联合优化次用户的发射功率和接入概率，最终得到最优信道接入和功率分配方案。仿真结果表明，与传统算法相比该方案可通过合理分簇提高分布式认知网络的感知精度，在保证感知性能的条件下使系统能量效率得到有效提升。
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| 关 键 词： | 认知Ad hoc网络 能量效率 感知因子 信道接入概率 |
| 收稿时间： | 2016/6/14 0:00:00 |
| 修稿时间： | 2017/4/13 0:00:00 |
A cross-layer design scheme of spectrum access for cognitive radio Ad hoc networks |
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| DU Yi-hang,WANG Ke-ren and WangWenchuang.A cross-layer design scheme of spectrum access for cognitive radio Ad hoc networks[J].Application Research of Computers,2017,34(8). |
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| Authors: | DU Yi-hang WANG Ke-ren and WangWenchuang |
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| Affiliation: | Electronic Engineering Institute,Electronic Engineering Institute,Troop 61651 |
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| Abstract: | In order to enhance the accuracy of spectrum sensing and energy efficiency of cognitive radio Ad hoc networks, a cross-layer design scheme based on energy efficiency is proposed. The clustering problem is solved through constraint maximum-weight edge bipartite decomposition scheme based on sensing reliability. Then the transmission power and the access probability of the secondary users are optimized in each cluster. The optimal channel access and power allocation scheme are finally obtained. Simulation results show that the scheme can enhance sensing accuracy of distributed cognitive network by rational clustering and substantially improve the energy efficiency under the premise of ensuring the sensing performance compared with the traditional algorithm. |
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| Keywords: | cognitive radio Ad hoc network energy efficiency sensing factor channel access probability |
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