Abstract
Wireless communications in the low terahertz band (0.1 THz-1 THz) is a promising candidate to enable ultra-high-rate vehicular networks beyond 5G. The successful design and adoption of such systems require a deep understanding of the low THz channel specifics in complex vehicular scenarios. In this paper, a comprehensive measurement campaign is reported with the aim of analyzing the wave propagation at 300 GHz in typical vehicular deployments. Following a modular approach, the generic vehicular scenario is decomposed into basic propagation setups that are further analyzed in detail. The obtained measurement data are then applied to derive the mathematical approximations that characterize the low THz band channel properties for each scenario. Finally, the combination of measurement and modeling results is used to identify the critical propagation effects that has to be accounted for in the applied studies. The presented approach, raw and processed data, as well as the contributed analysis, serve as building blocks for future analytical and simulation tools to model prospective vehicular communication systems in the low THz band.
Highlights
T ODAY, as the first standardization wave of fifth-generation (5G) millimeter wave communications systems is almost complete, the terahertz band (0.1 THz – 10 THz) starts to receive attention from the academic and industrial communities
N=1 where hk(·) denotes the impulse response (IR) of the kth combination of angle of depature (AoD) and angle of arrival (AoA), δ(·) denotes the Dirac delta function, τ denotes the delay, τmax denotes the delay of the maximum peak of the IR, Re and Im denote two Gaussian random variables that create a synthetic noise with the same variance as the noise of the spatially resolved measurements, and τn the delay of the nth sample, respectively
Note that the observed losses of up to 50 dB are considerably higher than the values reported earlier for lower frequencies, implying that no effective communications in the low THz band are possible through the vehicle body at the engine level
Summary
T ODAY, as the first standardization wave of fifth-generation (5G) millimeter wave communications systems is almost complete, the terahertz band (0.1 THz – 10 THz) starts to receive attention from the academic and industrial communities. Real measurement data can be used as reference facilitating the development and calibration of scenario-specific channel and interference models for low THz band vehicular communications. Summarizing, no throughout measurement campaign for low THz signal propagation in vehicular setups has been reported to date challenging the design of trustworthy channel and interference models for prospective vehicular communication systems. The main contributions of our study are: To support the design of low THz vehicular channel and interference models, we perform a comprehensive measurement campaign, characterizing the channel impulse response (IR), average path loss, and other important angular and time-dependent characteristics in various single-lane and multi-lane deployment scenarios. To facilitate the understanding of low THz signal propagation in vehicular scenarios, we analyze the obtained measurement results and identify the main components affecting the channel of low THz vehicular communication systems in different conditions.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
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 call
