信道估计误差条件下异构蜂窝网的安全传输方案

Secure transmission scheme in heterogeneous cellular network with channel estimation errors

针对异构蜂窝网提出了一种信道估计误差条件下的安全传输方案。首先,依据信道估计结果设计安全发射门限,通过比较接收信干噪比和安全发射门限的大小实现发射控制;然后,应用随机几何工具对所提方案的安全性能进行分析;在此基础上以最大化系统安全吞吐量为目标设计了安全发射门限优化算法,由此得到当前信道估计条件下最优的安全发射门限。仿真验证了所提方案可有效提升系统的安全吞吐量。

This paper proposed a secure transmission scheme of HCN with channel estimation errors.Firstly,it controlled the emission process by comparing the received SINR(signal to interference plus noise ratio)with the transmission threshold.Then,it proposed the performance analysis under a stochastic geometric framework.On the basis of this,it put forward the transmission threshold selection algorithm to maximize the system secrecy throughput.Simulation results indicate the validity of the proposed scheme can promote the secrecy throughput.