Multi-monitor-oriented short data packet D2D covert communication implementation method

The invention provides a multi-monitor-oriented short data packet D2D covert communication implementation method, which aims at the problem of D2D communication behavior covert under the condition of multiple monitors and mainly comprises the following implementation steps for both D2D communication parties: communication key exchange and code element sharing; monitoring node state sensing and information coding; carrying out concealment performance analysis under the condition of multiple monitors; performing information decoding, and analyzing the average packet error rate of a D2D receiving end; and a joint optimization problem of D2D pair sending power and data packet length is constructed. And the maximum average effective hidden throughput is obtained by deriving and solving the optimal data packet length L * and the sending power Pt *. The optimization strategy provided by the invention can be widely applied to a covert communication scene under the condition of multiple monitors. 本发明提供面向多监测者的短数据包D2D隐蔽