Dependence of radio channel characteristics on terrain variability in hilly/mountainous regions

Lu, Jonathan S.; Bertoni, H.L.; Han, Alexander X.; Chrysanthou, Chrysanthos; Boksiner, Jeffery

doi:10.1109/milcom.2011.6127709

Cited by 2 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In this study, we have chosen and ( 10 dB). Computations previously reported for and ( 12 dB) [13], which give less rough surface scattering, are qualitatively similar to those reported here. The value of is independent of frequency when the wavelength is on the order of the surface roughness, or smaller [5].…”

Section: B Terrain Scattering Modelsupporting

confidence: 87%

“…Cumulative distribution functions from the Monte Carlo simulations of every terrain database are fairly symmetric, so that the path loss is evenly distributed about the average represented by the LSE fit. The dependency of on is nearly the same for all databases, so it is modeled as (13) The slow-fading standard deviation varies from about 5 dB in rolling terrain 5 m to approximately 25 dB in mountainous regions. When computing the CDF of slow fading and the values of , all links were included independent of their length .…”

Section: A Path Loss Modelmentioning

confidence: 99%

See 1 more Smart Citation

The Influence of Terrain Scattering on Radio Links in Hilly/Mountainous Regions

Han

Bertoni

2013

IEEE Trans. Antennas Propagat.

Self Cite

View full text Add to dashboard Cite

Current rural propagation models only consider paths (direct, ground reflected, terrain diffracted, troposphere scattered) that lie in the vertical plane containing the transmitter and receiver. This paper shows that nonspecular scattering from terrain can give significant additional contributions to the received signal in hilly/mountainous environments. To show this, we have carried out Monte Carlo simulations of scattering in many different types of rural regions. These simulations model scattering using the bi-static radar equation with a Lambert's law coefficient. In order to permit simulations for many radio links and many terrain databases, we have developed a novel algorithm to rapidly search for terrain scattering elements that are visible to both the transmit and receive antennas. Results show that in sufficiently rugged terrain, the scattered paths can give a greater contribution to received power than vertical plane paths in more than 80% of links. Conclusions are drawn for radio channel characteristics, such as angle spread and short-term spatial fading. Statistical models dependent on terrain variation for path loss, and temporal response are also developed.Index Terms-Mountainous terrain, path loss model, rural propagation, tapped delay line, terrain scattering, viewshed.

show abstract

Section: B Terrain Scattering Modelsupporting

confidence: 87%

Section: A Path Loss Modelmentioning

confidence: 99%

The Influence of Terrain Scattering on Radio Links in Hilly/Mountainous Regions

Han

Bertoni

2013

IEEE Trans. Antennas Propagat.

Self Cite

View full text Add to dashboard Cite

show abstract

“…To describe the phenomena of fading channels, the general distribution of experimental data is proposed (Blaunstein et al, 2006), which takes into account the characteristic features of built‐up terrain and peculiarities of radio wave propagation related with multiple reflections. Monte Carlo simulation is used to analyze the spatial fading statistical model for mobile‐to‐mobile links in hilly and mountainous (Lu et al, 2011). In addition to some classical distribution, a general statistical distribution for multiple small‐scale fading distributions in wireless communication systems was proposed by the researchers in recent years, namely, the k‐ μ distribution (Dias & Yacoub, 2010).…”

Section: Introductionmentioning

confidence: 99%

Research on Fading Characteristics of Ultrahigh Frequency Signals in Karst Landform Around Radio Quiet Zone of FAST

Wang¹,

Shi

Yang³

et al. 2020

Radio Science

View full text Add to dashboard Cite

Ultrahigh frequency wireless signals are mainly influenced by the geomorphological environment during the transmission process, resulting in fading channels, especially in mountainous regions. The experiment was conducted in the Karst landform of Guizhou Province, China, in order to explore fading distribution characteristics for mainly analyzing electro magnetic compatibility (EMC) specialties between Five-hundred-meter Aperture Spherical Radio Telescope (FAST) and wireless radiation equipment around radio quiet zone of this telescope. Based on the channel variation data of six frequencies, which are mainly used by the electrical and electronic equipment of public facilities around FAST, the fading distribution was analyzed by using the Kolmogorov-Smirnov statistic method. And finally we determined the optimal distribution model with the fading range, fading depth, and fading rate. The results show that (1) the polarization type and signal frequency have a definite influence on the fading distribution types in the Karst landform; (2) Rice distribution is the optimal and stable distribution model in the Karst landform, and the log-normal distribution model is proposed to characterize the Rice K-factor distribution; and (3) the line-of-sight (LoS) components of the normalized envelopes are 0.6837, 0.8939, 0.5963, 0.6332, 0.5516, and 0.4806. And the multipath scattered components of those are 0.2134, 0.0630, 0.2436, 0.2224, 0.2678, and 0.2880. The research results provide a potential support for the deployment and optimization of wireless communication networks in Karst landform, especially around radio quiet zone of FAST.

show abstract

Dependence of radio channel characteristics on terrain variability in hilly/mountainous regions

Cited by 2 publications

References 3 publications

The Influence of Terrain Scattering on Radio Links in Hilly/Mountainous Regions

The Influence of Terrain Scattering on Radio Links in Hilly/Mountainous Regions

Research on Fading Characteristics of Ultrahigh Frequency Signals in Karst Landform Around Radio Quiet Zone of FAST

Contact Info

Product

Resources

About