Abstract
The two-ray model has been used for modelling of wireless channels already for decades. However, since researchers and industry are pushing forward to unlock the millimeter wave bands, we revisited this model. We re-derive the break point distance based on a generalized first Fresnel zone. The simplified approximation formula — four times the product of antenna heights scaled by wavelength — is especially accurate for millimeter waves, but difficult to verify. We then demonstrate that the two-ray ground-reflection model can be observed within many vehicular scenarios and fit ray-tracing data with the two-ray model. Finally we devise a measurement strategy as well as the usage of an l 1 algorithm for piecewise linear fitting slopes to the model data. Thereby we are able to show that the break point distance is indeed a valid modelling parameter and can be determined accurately.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
