Journal ArticleDOI
Empirical formula for propagation loss in land mobile radio services
TLDR
An empirical formula for propagation loss is derived from Okumura's report in order to put his propagation prediction method to computational use.Abstract:
An empirical formula for propagation loss is derived from Okumura's report in order to put his propagation prediction method to computational use. The propagation loss in an urban area is presented in a simple form: A + B log 10 R, where A and B are frequency and antenna height functions and R is the distance. The introduced formula is applicable to system designs for UHF and VHF land mobile radio services, with a small formulation error, under the following conditions: frequency range 100-1500 MHz, distance 1-20 km, base station antenna height 30-200 m, and vehicular antenna height 1-10 m.read more
Citations
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Journal ArticleDOI
Particle filters for positioning, navigation, and tracking
Fredrik Gustafsson,Fredrik Gunnarsson,Niclas Bergman,Urban Forssell,Jonas Jansson,Rickard Karlsson,Per-Johan Nordlund +6 more
TL;DR: The technique of map matching is used to match an aircraft's elevation profile to a digital elevation map and a car's horizontal driven path to a street map and it is shown that the accuracy is comparable with satellite navigation but with higher integrity.
Journal ArticleDOI
Wideband Millimeter-Wave Propagation Measurements and Channel Models for Future Wireless Communication System Design
TL;DR: Experimental measurements and empirically-based propagation channel models for the 28, 38, 60, and 73 GHz mmWave bands are presented, using a wideband sliding correlator channel sounder with steerable directional horn antennas at both the transmitter and receiver from 2011 to 2013.
Journal ArticleDOI
An empirically based path loss model for wireless channels in suburban environments
V. Erceg,Lawrence Joel Greenstein,S.Y. Tjandra,S.R. Parkoff,A. Gupta,B. Kulic,A.A. Julius,R. Bianchi +7 more
TL;DR: A statistical path loss model derived from 1.9 GHz experimental data collected across the United States in 95 existing macrocells is presented, and it distinguishes between different terrain categories.
Journal ArticleDOI
Rayleigh fading channels in mobile digital communication systems .I. Characterization
TL;DR: In this article, the authors address Rayleigh fading, primarily in the UHF band, that affects mobile systems such as cellular and personal communication systems (PCS) and itemizes the fundamental fading mani.
Journal ArticleDOI
Overview of Millimeter Wave Communications for Fifth-Generation (5G) Wireless Networks—With a Focus on Propagation Models
Theodore S. Rappaport,Yunchou Xing,George R. MacCartney,Andreas F. Molisch,Evangelos Mellios,Jianhua Zhang +5 more
TL;DR: Propagation parameters and channel models for understanding mmWave propagation, such as line-of-sight (LOS) probabilities, large-scale path loss, and building penetration loss, as modeled by various standardization bodies are compared over the 0.5–100 GHz range.
References
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Book
Microwave Mobile Communications
William C. Jakes,Donald C. Cox +1 more
TL;DR: An in-depth and practical guide, Microwave Mobile Communications will provide you with a solid understanding of the microwave propagation techniques essential to the design of effective cellular systems.
Journal ArticleDOI
Comparison of mobile radio transmission at 150, 450, 900, and 3700 mc
TL;DR: In this paper, a comparison of the transmission performance of 150, 450, 900, and 3700 cm in a mobile radiotelephone type of service is made. But, the results show that while transmission above roughly 1000 cm for these services is not impossible, it would be decidedly more difficult to employ these frequencies satisfactorily.
Journal ArticleDOI
Some characteristics of mobile radio propagation at 836 MHz in the Philadelphia area
D.M. Black,D.O. Reudink +1 more
TL;DR: In this paper, a mobile radio propagation test was carried out at 836 MHz from a base station in downtown Philadelphia, Pa., to a mobile which traveled on the city streets, and it was found that the median signal power tends to fall off as R-3 for distances greater than 1 to 2 mi from the base station antenna.
Journal ArticleDOI
Mobile radio propagation in British cities at frequencies in the VHF and UHF bands
K. Allsebrook,J.D. Parsons +1 more
TL;DR: In this article, an analysis of the factors affecting the transmission loss in urban/suburban areas has been carried out in three British cities at frequencies of 85.875, 167.2, and 441.025 MHz.
Journal ArticleDOI
Vehicle location in cellular mobile radio systems
TL;DR: A tutorial discussion of vehicle location as used to control cellular mobile radio systems is presented in this article, where early concepts and misconceptions concerning vehicle location are described, and the relation between location "accuracy" and system performance optimization is discussed.