Abstract
Traditional two-hop and multiple relaying and forwarding cooperative communication system, in the presence of illegal eavesdropping users, the secure transmission of system information relies on the acquisition of instantaneous channel state information to a great extent. Due to the broadcasting and time variability of wireless channel, it is almost impossible to obtain instantaneous channel state information. In view of this problem, this paper uses partial relay selection as the selection criterion, taking the security outage probability and security capacity as reference basis, the simulation verifies the influence of channel estimation error on the secure performance of the cooperative system.
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