A UAV-assisted communication method based on intelligent reflector

Abstract

The invention discloses an unmanned aerial vehicle-assisted communication method based on an intelligent reflecting surface, comprising: step 1: the intelligent reflecting surface reflects a signal to a downlink composed of user communication equipment; Step 3: After the closed-form solution of the phase of the smart reflector is determined, use the penalty dual decomposition algorithm with locally stable solution and the continuous convex approximation algorithm to optimize the time division multiple access The flight path, the phase of the smart reflector, and the connection relationship variable α of the UAV in the mode k [n]; Step 4: After the phase of the smart reflector is determined, use the penalty dual decomposition algorithm with local stable solution and the continuous convex approximation algorithm to optimize the flight path and smart reflection of the UAV in the non-orthogonal multiple access mode Phase phase, communication power distribution and binary variable Ω k，j [n], thereby enabling UAV-assisted communication based on smart reflective surfaces.

Description

technical field [0001] The invention relates to the field of unmanned aerial vehicle wireless communication, in particular to an unmanned aerial vehicle-assisted communication method based on an intelligent reflective surface. Background technique [0002] Reconfigurable smart surfaces enable the construction of a smart radio environment that can alter the propagation of incident electromagnetic waves in a programmable way to control the phase of the incident electromagnetic waves. With the advent of reconfigurable smart surfaces, a new paradigm for wireless system design is considered. They are not taken from uncontrollable reflections in free space, but as part of system parameters that can be optimized. As a new technology, the application of Reconfigurable Intelligent Surfaces in wireless communication systems has proliferated in recent years. Reconfigurable smart surfaces can assist in the security performance of wireless communication systems in the event of eavesdro...

AI Technical Summary

Problems solved by technology

[0008] In summary, the existing problems in the prior art are: (1) due to the barriers of high-rise buildings in cities and mountain ranges in mountainous areas, the communication quality of user communication equipment will decline; (2) the use of traditional relays to improve channel quality functions The consumption and cost are relatively high; (3) When using general optimization methods to solve the communication rate problem of user communication equipment, the convergence speed will be very slow

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