Principles of Spread-Spectrum Communication Systems by Don Torrieri

Author:Don Torrieri
Language: eng
Format: epub, pdf
Publisher: Springer International Publishing, Cham

(6.48)

where κ is the Rice factor, f d is the Doppler spread, and Ω is the average fading power gain. For Rayleigh fading, κ = 0 and

(6.49)

Equations (6.48) and (6.49) indicate that the fading rate is proportional to the Doppler spread.

Let T f denote the average fade duration, which is the amount of time at which the fading amplitude remains below the specified level r ≥ 0. Since 1/f r is the average time between fades that cross below r, the product f r T f is the fraction of the time during which a fade occurs. If the time-varying fading amplitude is assumed to be a stationary ergodic process, then this fraction is equal to F α (r), the probability that the fading amplitude is below or equal to the level r. Thus,

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.