摘要
研究了由源、目的、干扰中继和窃听者组成的四终端网络中干扰中继和源之间的博弈问题。其中干扰中继帮助窃听者最小化安全速率,而源的目标是最大化安全速率,源和干扰中继构成了博弈问题,采用了非合作零和博弈来解决此问题,得出博弈双方各自最优策略的表达式,并根据极大极小值定理分析了纳什均衡点的存在性。这里仿真结果采用的方法能非常有效地降低安全速率,且存在纳什均衡点。
A four-terminal Gaussian network, composed of source, destination, eavesdropper and jammer relay, is discussed. The source aims to maximize the achievable secrecy rates, whereas the jammer relay times to minimize these rates. And the source and the jammer relay form a game problem, and with non-cooperative zero-sum game for this problem, the saddle-point solutions are found. The simulation shows that by using both relay and sending noise, the secrecy rate could be effectively decreased.
出处
《通信技术》
2013年第7期47-49,共3页
Communications Technology
关键词
零和博弈
安全速率
窃听信道
无线通信
zero-sum game
secrecy rate
wiretap channel
wireless communication
