多播
保密
计算机网络
干扰
继电器
计算机科学
物理层
多输入多输出
安全传输
干扰(通信)
安全多播
传输(电信)
无线
计算机安全
源特定多播
频道(广播)
电信
加密
实用通用组播
功率(物理)
物理
热力学
量子力学
作者
J. E. Giti,Bala Srinivasan,Joarder Kamruzzaman
标识
DOI:10.1109/glocomw.2017.8269226
摘要
We consider the problem of security in wireless multicasting for a multiple-input multiple-output (MIMO) relay-aided system. The network suffers from a group of adaptive eavesdroppers who can act as both simple eavesdroppers and hostile jammers. This paper formulates the impact of friendly jammers to improve secured communication. We derived the expressions for secrecy multicast capacities considering the absence and presence of friendly jammers. The best relay for transmission is chosen from a group of relays that aids to achieve the maximum secrecy capacity while the best jammer is selected based on competitive interference price. Numerical results show that the achievable secrecy multicast capacity increases significantly in the presence of jammer to nullify the effect of adversaries. Results under different scenarios of varying jamming and relay powers demonstrate the efficacy of friendly jammers in providing physical layer security.
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