A novel secure MIMO cognitive network

The existing cognitive radio networks (CRNs) lack the ability to deal with the electronic attack of malicious users, which can destroy the normal communication of the cognitive users. To solve the problem, we propose a novel secure CRN by combining MIMO technique and low density parity check (LDPC) codes at the base-station (BS) and mobile stations (MSs), the electronic interference of the malicious users can be effectively weakened. The capacity and the outage probability of the proposed MIMO CRN are analyzed. The simulation results in quasi-static Rayleigh flat-fading channel show that the proposed secure MIMO CRN can effectively cancel electronic interference from the malicious users.