Research On Millimeter-Wave Channel Characteristics For Multi-Scenes

Wireless communication technology is constantly evolving,with increasing application scenarios and higher frequency bands.To obtain more frequency spectrum resources,the 60 GHz millimeter wave(mm Wave)has become a research hotspot due to its large transmission bandwidth and gigabit-per-second data transmission rate.The study of the characteristics of mm Wave wireless communication channels is an important foundation for the research and application of mm Wave technology.Research on the channel characteristics for specific scenarios is a necessary prerequisite for establishing wireless communication standards that meet the needs of those scenarios.This thesis focuses on the complex enclosed spaces dominated by metal structures and conducts research on the propagation characteristics of 60 GHz mm Wave signals in ships and aircraft.Taking the large cargo ship "Zhaoming" as a representative scenario,a three-dimensional(3D)detailed model of the ship was established,and the wireless channel characteristics of four typical cabins were analyzed and compared,and the power-delay channel model in the ship was extracted.Using the publicly available drawings of the Su-33 aircraft as a prototype,a 3D scene of the aircraft’s internal space was constructed,and the key information of path loss and delay spread of multipath signals propagating in the aircraft was obtained.A 60 GHz mm Wave wireless channel model suitable for complex enclosed spaces in aircraft was established.Through comparative analysis of the wireless channel characteristics in ships and aircraft,the variation of the channel model with the size of the scenario was discovered.Finally,this thesis proposes a channel modeling method based on ray tracing technology combined with an aperture coupling model to solve the problem of inaccurate calculation of signal propagation across compartmentalized apertures in ray tracing.The technical principles and development process of this method are described in detail,and the scheme verification is completed in a porous environment,achieving a universal analysis of the complex electromagnetic environment channel characteristics that include small hole scenarios.