Construction of a Theory of Sensor Networks Based on Multiterminal Information Theory and Applications

我们尝试在多终端信息理论的基础上构建传感器网络的理论框架。在分布式传感器网络中，我们发现该区域的某些部分表明了高斯信息源情况下通信的基本理论极限。在级联型传感器网络中，我们研究了中继通信网络，得到了数据传输速率和通信安全性之间权衡的区域指示的显式形式。作为应用，我们研究了分布式传感器网络和串行传感器网络相结合的组播通信系统。我们利用覆盖网络建立了这种通信网络的实现。在构建的覆盖组播网络中，我们证明了达到基本理论极限的编码方法也能取得良好的通信性能。

We tried to built the theoretical frame work of sensor networks based on the multi-terminal information theory. In the distributed type sensor networks we found some parts of the region indicating fundamental theoretical limit of communication in the case of Gaussian information sources. In the cascade type sensor networks we study the relay communication networks to obtain an explicit form of the region indication the trade off between the data transmission rate and the security of communication. As an application, we study multicast communication systems which are a combination of distributed sensor networks and serial sensor networks. We established an implementation of this communication networks using overlay networks. In the constructed overlay multicast networks we demonstrated that the coding methods that attain fundamental theoretical limit have also achieve good performance of communication.