Secret information transmission scheme using MIMO system

In wireless communication environment, one of measures against eavesdropping is a secret information transmission scheme. This paper focuses on the scheme using multiple-input multiple-output (MIMO) system and examines its characteristics against eavesdropping. In the proposed method information signal is handled by non-linear signal processing using artificial noise and eigenbeam space division multiplexing (E-SDM) is used to maintain the confidentiality of communication. As a result of the study, it is proved that the proposed method is effective against eavesdroppers using independent component analysis (ICA).