Single-user dynamic spectrum anti-interference system and method based on software radio platform

Abstract

The invention provides a single-user dynamic spectrum anti-interference system and method based on a software radio platform. The system comprises an interference subsystem, a broadband spectrum sensing subsystem, a wireless transmission subsystem and an autonomous decision-making subsystem. The method comprises the following steps: firstly, a jammer applies an interference signal to interfere user communication; then, the broadband spectrum sensing subsystem obtains a real-time spectrum situation by applying a broadband spectrum rapid sensing technology; then a data link in the wireless transmission subsystem performs data transmission, and a control link performs feedback from an ACK frame to a transmitter end; and finally, the autonomous decision subsystem performs channel selection through intelligent decision by adopting a reinforcement learning algorithm, and returns a new transmission channel to the user transmitter end through a control link. Theflexibility is good, hardware reconfigurability and expandability are high, external malicious interference is effectively avoided, dynamic spectrum access of a single user is achieved, and the overall throughput and anti-interference performance of the network are improved.

Description

technical field [0001] The invention belongs to the technical field of communication, in particular to a single-user dynamic spectrum anti-jamming system and method based on a software radio platform. Background technique [0002] In recent years, the demand for wireless communication has grown rapidly, making the interference faced by communication systems increasingly serious. Thanks to the rapid development of cognitive radio, Dynamic Spectrum Access (DSA), as an effective strategy for anti-jamming in the frequency domain, has attracted extensive attention from researchers in the communication field. However, most of the existing research on dynamic spectrum access stays at the theoretical level. How to verify the performance of dynamic spectrum anti-jamming algorithms through actual systems is a very challenging problem. The software radio platform based on National Instruments' LabVIEW (laboratory virtual instrument engineering workbench) and the universal software rad...

AI Technical Summary

Problems solved by technology

At present, with the continuous development of artificial intelligence technology, jamming technology tends to be intelligent, and the traditional anti-jamming technology has a single mode, which is far from meeting the existing anti-jamming performance requirements

[0003] In the field of dynamic spectrum anti-jamming, literature (F.Slimeni, Z.Chtourou, B.Schaeers, V.L.Nir, and R.Attia, "Cooperative Q-learning based channel selection for cognitive radio". Wireless Networks, vol.4, no. 1, 2018) proposed a Q-learning method to solve the hidden interference problem in single-user scenarios, and verified the algorithm through the software radio platform. In the time slot, the transmitter and the receiver frequency hop at the same time, requiring two interactions, which increases the transmission delay and greatly reduces the transmission efficiency

Existing system implementation based on USRP platform mainly focuses on single-user dynamic spectrum access and control channel anti-jamming direction, and rarely involves the realization of single-user dynamic spectrum intelligent anti-jamming system

Images