A method to predict multipath effects on a line-of-sight link

Lavergnat, J.; Magne, Sylvain; Bic, Jean-Claude

doi:10.1109/26.61452

Cited by 7 publications

(3 citation statements)

References 14 publications

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“…Thc coefficients of this polynomial are then used to solvc for the parameters of the polynomial expansion, given in (3). It was shown in [5], that a polynomial of order M =2 is sufficient to model observed fading responses.…”

Section: The Complex Polynomial Expansion Methodsmentioning

confidence: 99%

“…Subsequently a represents the vector sum of thc first two paths and ab is the magnitude of thc third path. In [3], the model was further simplified by assuming a fixed delay, T, given by, A similar approach was adopted in [5], except instead of assuming a fixed delay, the four parameters of (I) were reduced to three by imposing a = I, thus resulting in a normalized two-ray model.…”

Section: Propagation Measurements and Modelingmentioning

confidence: 99%

“…In [5] it was demonstrated that the parameters of the normalized two-ray model, b, . 0 andr can be obtained from a transformation of the parameters of a first order complex polynomial given by (3).…”

Section: Propagation Measurements and Modelingmentioning

confidence: 99%

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Propagation measurements and multipath channel modelling for line-of-sight links at 19.5 GHZ

Naicker

Mneney

2006

SAIEE Afr. Res. J.

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The nced I()r greatcr bandwidth and higher data ratcs will incvitably lead to the usage of the uppcr portion of the k-band in terrestrial communication systems. Thc frcqucncy band Ii'om 18 Gllz 10 20 Gllz has bccn identificd as a suitable candidatc lor short-haul linc-of sight links. As a eonsequcnce, a 6.73 km terrcstrial LOS link ecntcrcd at 19.5 GHz has recently been established bctween the Iloward Collcge and Wcstvillc campuscs of thc University of KwaZulu-Natal (UKZN), with the primary objectivc to investigate the cffect of rain attenuation over the link. Multipath propagation and the resultant frequency selective 1~lding is another major problcm afflicting such LOS links. In ordcr to evaluate the effect of multipath propagation over the link statistical models of tbe channel transfer functions arc required. In this paper the research into the simulation and statistical modeling of the mullipatb propagation for the above-Illentioncd LOS link will be discussed.

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Section: The Complex Polynomial Expansion Methodsmentioning

confidence: 99%

Section: Propagation Measurements and Modelingmentioning

confidence: 99%

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Propagation measurements and multipath channel modelling for line-of-sight links at 19.5 GHZ

Naicker

Mneney

2006

SAIEE Afr. Res. J.

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Multipath fading characteristics of a digital microwave link in Western India

et al. 1992

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Experimental and computer simulation studies of frequency selective fading in terrestrial line‐of‐sight microwave links

Zhao¹,

Zhang²,

Vainikainen³

et al. 2001

Radio Science

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Abstract. Rummler's three-ray model is used for multipath propagation in modified spherical stratified air. The time delays of the three rays are obtained by using the ray tracing method. Both the time delays and the amplitudes are related to the modified refractive index gradients inside and outside the layer. Because of the random variations of the modified refractive index gradients, the computer simulation method of multipath fading is studied by using the Monte Carlo method. The experiments of frequency selective fading are performed in China on a 48.4 km terrestrial microwave link. The statistical distributions of flat fading, in-band dispersion and the effect of diversity reception and their correlations are studied both by computer simulations and by experiment. On the basis of data measured in China and Japan, and computer simulation results, the correlation between the equal probability values of the in-band linear amplitude dispersion and flat-fading depth due to multipath propagation is analyzed. An excellent linear relationship is found between them.

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A method to predict multipath effects on a line-of-sight link

Cited by 7 publications

References 14 publications

Propagation measurements and multipath channel modelling for line-of-sight links at 19.5 GHZ

Propagation measurements and multipath channel modelling for line-of-sight links at 19.5 GHZ

Multipath fading characteristics of a digital microwave link in Western India

Experimental and computer simulation studies of frequency selective fading in terrestrial line‐of‐sight microwave links

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