Level Crossing Rate and Average Fade Duration
- Doppler spread can be used to calculate the level crossing rate(LCR), or the average number of times a signal crosses a certain level.
- The combination of LCR and average fade duration, which is the average time over which the signal below a certain level can be used to design the signaling format and a diversity scheme for cellular systems.
- Let ρ= R/Rrms be the value of the specified amplitude level, R, normalized to local rms amplitude of the fading envelope Rrms, based on the Rayleigh distribution of the received signal envelope.
#Ref book: Wireless Communication and Networking – V.K. Garg