摘要
全双工(Full-Duplex,FD)非正交多址接入(Non-orthogonal Multiple Access,NOMA)车载协作通信网络中信道的广播特性使得车载通信安全性难以得到有效保障,且容易造成网络中断。由此提出一种以降低安全中断概率(Secrecy Outage Probability,SOP)为目标的NOMA-FD最优中继选择方案。该方案通过任意中继给窃听车辆用户发送干扰噪声和对NOMA全双工中继采用剩余自干扰消除技术来联合保障合法车载用户安全高效数据传输。数值分析也验证了理论结果。值得说明的是,合理参数设置可极大地减少系统的安全中断概率,在保证较低系统复杂度的同时,有效提高系统的安全性能。
The channel broadcast characteristics of the full-duplex(FD)non-orthogonal multiple access(NOMA)cooperative vehicular communication network will lead to communication interruption or failure,which is difficult to effectively guarantee the security of the vehicular communicate.A NOMA-FD optimal relay selection scheme is proposed in order to reduce secrecy outage probability(SOP).In the scheme,any relay transmitted interference noise to eavesdropping vehicular users meanwhile the selected NOMA-FD relay used the residual self-interference elimination technology to jointly guarantee the safe and efficient data transmission of legitimate vehicular users.Numerical analysis verified our theoretical results.Note that secrecy outage probability of the system can be greatly reduced by reasonable parameter setting,and the security performance of the system can be improved effectively while ensuring lower complexity.
作者
张晓烁
邱斌
肖海林
Zhang Xiaoshuo;Qiu Bin;Xiao Hailin(School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,Guangxi,China;School of Information Science and Engineering,Guilin University of Technology,Guilin 541004,Guangxi,China;School of Computer Science and Information Engineering,Hubei University,Wuhan 430062,Hubei,China)
出处
《计算机应用与软件》
北大核心
2024年第7期106-114,共9页
Computer Applications and Software
基金
国家自然科学基金项目(61872406,61472094)
浙江省重点研发计划项目(2018C01059)
广西自然科学基金项目(2018GXNSFBA281057)。
关键词
车载网络
非正交多址接入
安全中断概率
剩余自干扰
功率分配
Vehicular network
Non-orthogonal multiple access
SOP
Residual self-interference
Power distribution
