A method for secure transmission of power-divided energy harvesting relays with scrambling by target users

Abstract

The invention discloses a power distribution energy collection delay secure transmission scheme of target user scrambling. The scheme comprises: the relay selects a user node having the maximum channel power gain from all target user nodes to serve a legal user in a first time slot, and uses the residual unselected user nodes as potential eavesdropping users, a signal source sends useful information to the relay, the legal user sends a scrambled signal to the relay, a relay node applies the power of the received signal to energy collection and uses the residual power for receiving the useful information sent by the signal source and the scrambled signal sent by the legal user; and in a second time slot, the relay broadcasts the received signal to a host, and the host contains the legal user and the potential eavesdropping users. The power distribution energy collection delay secure transmission scheme combines the cooperative scrambling technology with the information simultaneous interpretation technology reasonably, so that the receiving signal to noise ratio of an eavesdropping channel is reduced, the security performance of the network is improved, and thus the secure transmission of information is ensured.

Description

technical field [0001] The patent of the present invention relates to the field of wireless communication and physical layer security, in particular to a method for safe transmission of power-divided energy collection and relaying by target user scrambling. Background technique [0002] Scrambling technology is a widely used technology, it is suitable for relay network, in the relay network, the destination user node sends the scrambled signal to the relay, and the relay is processed, amplified and forwarded to broadcast the scrambled signal to the destination (that is, Destination user), since the destination node knows the scrambling signal, it can be eliminated, and the eavesdropping user cannot know the scrambling signal information in advance, and then achieve the effect of interference, thereby improving the security performance of the communication system. [0003] Multi-user diversity is a widely used technology, which utilizes the characteristics of independent fadi...

AI Technical Summary

Problems solved by technology

[0004] In recent years, the research on the wireless network energy simultaneous interpretation technology has received extensive attention. For relay networks that are not convenient for large-scale use of wired energy supply, such as sensor networks, the traditional method is to use battery power, but it will cause network delays in the later stage. The maintenance cost is high, and the battery needs to be replaced or charged regularly

Images