防恶意干扰下车辆通信网络信号传输监测仿真

Prevent Malicious Interference Signal Transmission Monitoring Vehicles Communication Network Simulation

防恶意干扰下对车辆通信网络信号的安全传输的监测,可以有效的预防车载自组织网络信号中内部窃听者带来的安全威胁。对网络信号的传输安全性进行监测,需要通过随机等效信道,确定用户所处的子载波,完成对网络信号的安全传输的监测。传统方法利用传输模式将窃听者信道随机化,但忽略了对用户的时隙子载波的选取,导致监测精度低。提出防恶意干扰下基于多用户随机用户的车辆通信网络信号安全传输监测方法。对每一个时隙内的子载波,传输数据的用户由基站随机选择。通过使用在子载波中的波束,实现匹配基站和选定的用户之间的信道。上述方法使得攻击者的等效信道具有随机性,而授权用户通过假设检验能够确定自己所处的子载波。通过理论分析及算法仿真表明可以有效地提高系统安全传输速率,并且其安全性高于现有加性人工噪声方法。

This article proposes a monitoring method for signal secure transmission of vehicle communication network based on random user of multi - user under prevention of malicious interference. The user of data transmission is selected randomly by base station. The channel between the base station and selected user was matched with utili- zation of beam in subcarrier. Equivalent channel of attacker is random by using the method. However, authorized us- ers can confirm the subcarrier where they are located using hypothesis testing. It is shown that, from theoretical anal- ysis and algorithm simulation, the proposed method can improve the rate of system secure transmission. Its security is higher than the one of current additive artificial noise method.