Abstract: It has been known that the pattern reconfigurable antenna can restrict signal path by choosing various radia tion patterns. Furthermore, the Time Reversal technology can make the signal propagation in the given channels. In this pa per, aforementioned technologies will be combined together to generate several signals with different intercept locations. When the information is modulated into these signals. It is hard to detected the information due to various intercept locations of the signal. In this investigation, MATLAB is used to build the electromagnetic simulation model to simulate the indoor en vironment. Then, the proposed method will be investigated in the simulated indoor environment. The relevant results are present and discussed.