NOMA physical layer security transmission method of heterogeneous network

Abstract

The invention belongs to the technical field of communication, and particularly relates to an NOMA physical layer security transmission method of a heterogeneous network. The implementation process isas follows: for each legitimate user of the heterogeneous network using the non-orthogonal multiple access NOMA technology, the NOMA is configured to serve a signal power coefficient of each legitimate user, a zero-space artificial noise distribution coefficient is configured according to the position distribution of the legitimate user, and NOMA physical layer security transmission of the heterogeneous network based on the configured signal power coefficient and the zero-space artificial noise distribution coefficient is performed. According to the NOMA physical layer security transmission method provided by the invention, by reasonably configuring the artificial noise and enhancing the resistance to passive eavesdropping when the eavesdropping channel quality of the system is better than the legal user channel quality, the physical layer security performance of NOMA wireless transmission in the heterogeneous network is improved, the ability of the NOMA system to resist potential silent eavesdropping is enhanced, particular when the eavesdropping channel quality is better than the channel quality of the legitimate user, the physical layer security performance of the system is improved, and the NOMA physical layer security transmission method can be used for the security transmission in mobile communication systems with high user density, such as heterogeneous cellular networks.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and in particular relates to a heterogeneous network NOMA physical layer security transmission method, which can be used for secure transmission in mobile communication systems with high user density such as heterogeneous cellular networks. Background technique [0002] Due to the continuous increase in the number of users and data traffic, mobile communication networks have developed into heterogeneous cellular networks and dense heterogeneous cellular networks to improve the reuse rate of spectrum resources and space resources. At the same time, in order to further meet the rapid growth of mobile service requirements under the condition of scarce spectrum resources, non-orthogonal multiple access (NOMA) technology has attracted more and more attention from the industry. The basic idea of ​​NOMA technology is to adopt non-orthogonal transmission at the transmitting end, actively int...

AI Technical Summary

Problems solved by technology

Although the natural endogenous physical layer security features of NOMA technology can cause certain difficulties for illegal eavesdropping, it is difficult to fully deal with the security threats when the quality of eavesdropping channels is better than that of legitimate users.

Images