Secrecy Outage in MISO Systems With Partial Channel Information

摘要: Secrecy on the physical layer is a promising technique to simplify overall cross-layer secrecy concept. In many recent works multiple antenna wiretap channel, perfect channel state information intended receiver as well passive eavesdropper are assumed. this paper, transmitter has only partial about eavesdropper, but full main receiver. The applied model flat-fading multiple-input single-output channel. We minimize outage probability of secure transmission under single-stream beamforming and use artificial noise in null space Furthermore, we derive suboptimal scheme based Markov bound, which performs reasonably well. results generalize cases with without Numerical simulations illustrate over degree knowledge confirm theoretical results.