Securing BMOCZ Signaling: A Two Layer Artificial Noise Injection Scheme

A two-layer perturbation scheme is introduced to the blind communication strategy based on modulation on conjugate-reciprocal zeros. The proposed strategy enables the intended receiver to decode while obscuring the message to an unintended receiver. A new decoder strategy is proposed and analyzed. Furthermore, the "learning" rate of the unintended receiver is analyzed via the computation of Cramér-Rao bounds. Numerical results show that the proposed scheme does provide a meaningful loss in performance to the unintended receiver.