UAV (Unmanned Aerial Vehicle) air computing system based on full-duplex relay and trajectory and power optimization method

Abstract

The invention discloses a UAV (Unmanned Aerial Vehicle) air computing system based on a full-duplex relay and a trajectory and power optimization method. The UAV air computing system adopts a UAV as the full-duplex relay to carry out data aggregation and forwarding; according to the method, the optimization problem under the constraints of the sensor transmitting power, the information transmission rate, the UAV track and the de-noising factor is solved by taking the minimization of the air calculation time mean square error as the target, and the overall joint optimization problem is solved. And determining each optimization variable one by one by adopting an alternate optimization method according to the high coupling of the optimization variables. According to the method, the mean square error minimization under the guarantee of the communication rate is realized, the optimization problem is decomposed into four independent sub-optimization problems, and the optimization of the UAV track and power is realized by a low-complexity algorithm.

Description

technical field [0001] The invention relates to a UAV aerial computing system and a trajectory and power optimization method, in particular to a full-duplex relay-based UAV aerial computing system and a trajectory and power optimization method. Background technique [0002] Due to the advantages of strong mobility, flexible configuration, and line-of-sight links, UAVs (Unmanned Aerial Vehicle, UAV) are increasingly widely used in the field of wireless communication, and UAVs can also move to a location close enough to the sensor in harsh environments. place, it can avoid long-distance information transmission, save the power of the sensor, and the influence of noise. In the air-to-ground transmission, the UAV is at a high altitude, and the line-of-sight wireless transmission with the sensor is usually used, which can reduce the probability of deep channel fading. Since sensors and base stations are often unable to communicate directly, using UAV as a relay has become an imp...

AI Technical Summary

Problems solved by technology

In this system, the UAV aggregates and receives information from sensors through the airborne base station, and realizes the transmission and aggregation of multiple sensor data in a single time slot. However, in a wireless sensor network with a complex environment, the sensor and the base station cannot communicate directly.

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