System Simulator

We have joined the group which develops the advanced and integrated electromagnetic system software and we have carried out the development of ‘Ray-Tracing’ part of this software. Ray-Tracing simulation is widely adopted to model indoor and outdoor radio channels with decreasing significantly time consumption compared to campaign. In this task, a ray tracing simulator under development is based on Geometrical Optics, the Uniform Theory of Diffraction and GPU Acceleration and the accuracy of this simulator is verified by comparing its results with commercial simulator in indoor and outdoor environment.

In this task, we develop various electromagnetic (EM) field analysis methods on navy ship based on our ray-tracing engine. Analysis methods we performed are electromagnetic interference (EMI) and electromagnetic compatibility (EMC) analysis, shadow zone analysis and electromagnetic pulse (EMP) shielding effectiveness analysis.

Due to the evolution of communication generation to 5G and FR2 bands, multiple power amplifiers (PAs) are required due to various channels, and the peak-to-average power ratio (PAPR) of the transmission signal increases at the same time. So, the linearity of the PA at the transmitter stage is considered important Accordingly, we use digital pre-distortion to increase the linearity of the PA and minimize power consumption at the mobile stage. Moreover, the corresponding simulator is also designed to give a comprehensive understanding.