摘要
为防范多天线收发VANET内的节点窃听,保证网络的安全性,提出了跨层安全传输的MIMO-VANET协议。协议在路由表建立的同时进行信道状态信息的存储,并限制源、目的节点以外的其它节点获取不必要的路由信息。在进行信息传输时,首先将网络层预存的信道状态信息透传到物理层,然后将总信道进行奇异值分解,依据分集结果进行均衡传输信息,由于路由信息只限于源、目的节点获知,导致其它节点无法进行有效地信道均衡,从而无法获取信息,保证了信息传输的安全性。理论分析和仿真结果均表明当目的节点的接收信号质量较好时,可保持窃听节点的高误码率。
The cross-layer security routing protocol for Multi-Input-Multi-Output Vehicular Ad-hoc NETwork （MIMO-VANET） was presented in this paper, to prevent the eavesdropping in VANET. When building the routing table, this protocol stores the current channel states and restricts the VANET nodes, excepted source/destination nodes, from obtaining the unrelated routing information. During the information transmission process, the prestored channel states in network layer are transparently transmitted to the physical layer, and decomposed as total channel state. The decomposed results, which are only known by the source/destination nodes from routing information, can be utilized to equalize the channel and to demodulate the information. As a result, the other nodes cannot effectively equalize the channel, which causes little information can be eavesdropped. The theory analysis and simulation illus- trate that, when the destination nodes obtain the good signal quality, the eavesdropper suffers poor bit error rate.
出处
《计算机仿真》
CSCD
北大核心
2014年第1期176-179,194,共5页
Computer Simulation
关键词
跨层
路由协议
多天线
车辆自组织网络
安全传输
Cross -layer
Routing protocol
Multi-antenna
Vehicular Ad -hoc NETwork （VANET）
Security trans-mission
