نویسندگان
1 دانشجوی کارشناسی ارشد، دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران
2 استاد، دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران
3 استادیار، دانشگاه صنعتی خواجه نصیرالدین طوسی، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
One of the common challenges in wireless communications networks is wiretapping broadcast
signals from radio stations by eavesdroppers. In this paper is shown that interference alignment (IA)
technique can be completely eliminated intra and inter-cell interferences, in a cellular
communications network with the same frequency allocation to all of the users. Also, this technique is
able to provide maximum degrees of freedom (DoF) and securing the communication against
eavesdropping. IA approximately can close the rate of network secrecy to rate region of the interfering
broadcast channel (IFBC) in high SNR regime. In order to prove the mathematical and intuitive
capability of the interference alignment technique in increasing communication security, a kind of IA
algorithm closed-form is used in the downlink of an unsecured cellular network. Simulation results are
demonstrated for a certain range from the number of eavesdropper’s receive antennas, that secrecy
rate well possible come close to the network sum-capacity in high SNRs.
کلیدواژهها [English]