WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 17, 2021
Secure Communication for Cognitive Networks Based on MIMO and Spreading LDPC Codes
Authors: ,
Abstract: The existing cognitive radio (CR) systems lack the ability to deal with the attack of a pretended primary user (PPU), which can palsy cognitive network. To solve the problem, in this paper, a secure cognitive radio (CR) system is proposed. The proposed systems combines MIMO and spread spectrum techniques as well as low density parity check (LDPC) codes to cancel the electronic interference of PPU. The simulation results in Rayleigh flat-fading channel show that, comparing with MIMO cognitive system without the proposed method, the proposed approach can effectively cancel electronic interference from enemy and channel noises interference, and obtain about 9dB gain.
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Keywords: secure communication, MIMO cognitive systems, electronic interference cancellation, protograph low density parity check (LDPC) codes, spread spectrum
Pages: 114-122
DOI: 10.37394/232014.2021.17.16