Multi-user physical layer secure communication method against any number of cooperative eavesdroppers
A technology of physical layer security and communication method, which is applied to secure communication devices and key distribution, can solve problems such as the failure of physical layer security transmission methods, and achieve the effects of low power consumption, low complexity, and low interference
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[0045] In order to understand the technical features, objects, and effects of the present invention, specific embodiments of the present invention will be described with reference to the drawings.
[0046] Such as figure 1 As shown, the legal communication between both sides Alice and BOB1, BOB1, BOBN use a protection area around themselves, R needs to be larger than the discaractive distance of the channel, so that the eavesdropper EVE cannot enter the protection area, which is guaranteed EVE and Alice and BOB1, BOB2, ... BOBN is greater than R, ensuring EVE channels and Alice and BOB1, BOB2, ... Bobn is independent; R's length is determined by the channel propagation environment and the frequency frequency, and the scattering sufficient environment is generally 10 cm. -100cm.
[0047] The legal communication between the other sides Alice and BOB1, BOB2, ... BOBN need to be equipped with more than 2 antennas; considering the downlink, the sum of all BOBs is not more than the sum ...
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