认知无线电自组织网络中基于协作的汇合和传输技术研究

项目名称： 认知无线电自组织网络中基于协作的汇合和传输技术研究

项目编号： No.61201212

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 贾俊铖

作者单位： 苏州大学

项目金额： 25万元

中文摘要： 动态频谱管理是当前解决无线频谱资源稀缺问题的一大方向，而认知无线电技术是动态频谱管理的关键技术。认知无线电自组织网络是认知无线电技术的重要应用方向之一，但是频谱资源的异构性对其组网和传输过程提出了诸多问题。本项目将对认知无线电自组织网络的组网和传输过程中的关键问题进行深入研究，提出一套基于协作的方法优化系统性能。首先,研究组网过程中的多信道汇合问题，不同于当前的研究局限于任意两个节点的汇合问题，首次提出利用邻居节点协作来加快汇合速度,在被动和主动两种模式下设计和分析基于协作的汇合协议。然后, 在数据传输过程中研究多个次用户传输对通过协作传输来应对频谱的空间异构性，不同于现有基于简单网络模型的研究，考虑自组织网络中多样的协作方式，设计中继选择和资源分配方法，提高次用户网络的吞吐量。本项目不仅从理论角度进行研究，还将使用软件无线电平台对提出的相关协议进行验证，提高了可信性和实用性。

中文关键词： 认知无线电；汇合协议；接入协议；中继传输；资源分配

英文摘要： Dynamic spectrum management has been proposed recently as a promising approach to address the spectrum scarcity issue. Cognitive radio is deemed as the key enabling technology for dynamic spectrum management. Cognitive radio ad hoc network is one of the most important applications for cognitive radio. However, the heterogeneity of spectrum resource in cognitive radio ad hoc networks raises many research problems during the processes of network setup and data transmission. In this project, we will conduct deep research on the key issues of the network setup and data transmission in cognitive radio ad hoc networks. The main idea proposed in this project is to leverage the cooperation among neighboring secondary nodes to boost the overall system performance. Firstly, we will study the multi-channel rendezvous problem during the network setup. Different from the existing works which focus on the rendezvous between any two nodes, we for the first time propose cooperation based approaches to accelerate the rendezvous process. We will design and analyze cooperation based rendezvous protocols under both passive mode and active mode. Next, we will study cooperation based data transmission for multiple secondary transmission pairs to address the spectrum heterogeneity issue. Different from the existing works with simple n

英文关键词： Cognitive Radio；Rendezvous Protocol；Access Protocol；Relay Transmission；Resource Allocation