节点文献
一种实用的DF协作无线传感器网络跨层设计
A practical cross-layer design scheme for DF-cooperative wireless sensor networks
【摘要】 针对前向译码(DF)协作无线传感器网络的特点和要求,探讨基于分集合并和差错控制两种技术的实用跨层设计方案。首先,研究支持DF中继协议的协作传感器网络在目的节点采用等增益合并(EGC)的检测方案。通过和传统的最大比合并(MRC)方案以及最近提出的协作MRC方案综合比较,说明等增益合并是一个具有良好性能的实用方案。然后,把物理层的EGC和数据链路层的自动请求重传(ARQ)结合起来,再进行系统分析。最后,基于EGC和截断ARQ提出一种实用跨层设计方案。
【Abstract】 In accordance with the requirements and characteristics of decode-and-forward(DF) cooperative wireless sensor networks,this paper investigates cross-layer design based on diversity-combining and error-control techniques.The detection scheme based on equal gain combining(EGC) at the destination node is first investigated for a cooperative wireless sensor network with DF relaying protocol.It is shown by simulation that the EGC scheme is a good practical solution by comparing with the traditional maximal-ratio combining(MRC) scheme and the new cooperative-MRC scheme.Then the combination of EGC at physical and automatic repeat request(ARQ) at data link layer is analyzed further,and a practical cross-layer design scheme based on EGC and truncated ARQ is finally presented.
【Key words】 wireless communications; relay network; cooperative diversity; equal gain combining; decode-and-forward; automatic repeat request;
- 【文献出处】 电子设计工程 ,Electronic Design Engineering , 编辑部邮箱 ,2011年11期
- 【分类号】TN929.5;TP212.9
- 【下载频次】55