【摘要】 多天线跳空是一种重要的无线物理层安全技术,跳空图案是收发双方选择天线进行跳空通信的依据。提出了一种具有一定概率分布的跳空图案的产生方法:通过基于频分复用的高效双向信道训练,在获得知信道特征的同时获得信道误码率;将信道误码率映射为信道使用概率,以此为基础对伪随机序列进行概率调整,从而生成具有一定概率分布的跳空图案。仿真结果表明,新的跳空图案能够在保证系统安全性的同时提高了系统误码性能。更多还原

【Abstract】 Multi-antenna space hopping is an important security technology of wireless physical layer.The space hopping pattern is an important basis for selecting the transmitting and receiving antenna in space hopping transmission.The paper presents a generating method of gapped pattern with a certain probability distribution.Through the efficient two-way channel training based on frequency division multiplexing,we can obtain the channel characteristics and channel bit error rate at the same time.And the channel bit error rate is mapped to the channel usage probability.On the basis of the above,we can adjust the pseudo random sequence based on the probability.Then we can generate a gapped motif with a certain probability distribution.Simulation results show that the new space hopping pattern can guarantee system safety and improve the system BER performance.更多还原