Multipath Probability Model

Question 1

the smoother the path, the more likely the occurrence of ___.

Answer 1

multipath fading

Question 2

fade duration, 𝑻𝒐 , is expressed as a fraction of a year is given by

Answer 2

To = 8 x 10^6 t / 50 (secs/yr)

Question 3

A method for predicting the single-frequency (or narrowband) fading distribution suitable for large fade depths A in the average worst month in any part of the world.

Answer 3

ITU-R Multipath Probability Model

Question 4

___ used mostly in North America, is also widely used in ITU-R regions.

Answer 4

Vigants North American Multipath Probability Model

Question 5

often assigned to spur links and on short systems of less than about 10 tandem hops.

Answer 5

99.999 percent per-hop reliability (320 SES/yr outage) objective (floor)

Question 6

The average probability of multipath fading in Vigants North American model over a long period of time

Answer 6

P = (2.5x10^-6) (cfd^3) (10^-CFM/10)

Question 7

Outage time (or SES) in seconds per year (one-way)

Answer 7

Outage (SES) = To x P