摘要
分布式无线Ad Hoc传感器网络中的合作式波束形成的性能分析是建立在随机阵理论和移动通信波束形成的基础上的。在分布式Ad Hoc传感器网络中,每个传感器节点有一个全向天线,且在簇中的节点传输同一信号,使信号在远区场的目标方向上叠加。波束的方向的随机性是由无线Ad Hoc网络结构决定的。介绍了随机阵理论和移动通信波束形成,接着介绍了系统模型,分析了波束的方向特性,着重讨论了平均方向性增益,推导出平均方向性增益的近似公式。
The performance of collaborative beamforming is analyzed using the theory of random arrays.This paper assumes that each senor node has a single isotropic antenna;the nodes in the cluster collaboratively transmit the same signal that the signal in the target direction is coherently added in the far-field region.The beampattern is associated with the framework of Ad Hoc sensor networks.This paper describes the model and analyzes the average properties of the beampattern,it focus on the analysis of average directivity.
出处
《山西电子技术》
2007年第5期75-77,共3页
Shanxi Electronic Technology
