公开(公告)号：US20250088267A1

公开(公告)日：2025-03-13

申请号：US18813519

申请日：2024-08-23

Applicant: Southeast University ,  PURPLE MOUNTAIN LABORATORIES

Inventor： Chengxiang WANG ,  Xiuming ZHU ,  Jun WANG ,  Rui FENG ,  Jie HUANG

IPC: H04B10/073 ,  H04B10/114 ,  H04B10/50 ,  H04B17/391

Abstract: The present application discloses an indoor optical wireless communications-oriented general geometry-based stochastic channel modeling method, which belongs to the field of wireless communication channel modeling. The method includes: setting scenario layout and frequency band related parameters; generating an object reflection cluster birth-death process matrix and random numbers for controlling a blocking effect and propagation component classification; initializing a scattering cluster and intra-cluster scatterers; updating and calculating model parameters varying with space and time; calculating a light source radiation intensity, the power distributions of object reflection and particle scattering, and an equivalent reflection coefficient; and calculating a subchannel impulse response, and determining whether a propagation component exists, to generate a final channel impulse response. The general geometry-based stochastic channel modeling method for indoor optical wireless communications of the present invention can utilize the common characteristics of the wireless frequency bands of light and the unique characteristics of the frequency bands of infrared light, visible light and ultraviolet light. By setting corresponding parameters, the established model can support different frequency bands to be flexibly applied to the simulation and performance evaluation of 6G indoor optical wireless communication systems.

公开(公告)号：US20240340097A1

公开(公告)日：2024-10-10

申请号：US18681820

申请日：2023-04-11

Applicant: Southeast University

Inventor： Chengxiang WANG ,  Jun WANG

IPC: H04B17/391

CPC classification number: H04B17/391

Abstract: Disclosed in the present disclosure is an uplink and downlink asymmetric channel model parameter generating method. According to a modeling method, uplink and downlink channel transmission matrices can be generated at the same time when an asymmetric transceiving antenna configuration is used in an uplink and a downlink. In the method, firstly, parameters of a propagation channel between antennas are generated by using a geometric stochastic modeling method according to environmental parameters. Then an antenna pattern is introduced to calculate effective scatterers and corresponding effective paths of the uplink and the downlink. Finally, channel impulse responses of the uplink and the downlink are obtained. The method can be applied to the simulation and optimization of actual asymmetric communication systems.