4.2 Rayleigh, Rician and Nakagami Multipath Channel Models

This is part of the Wireless Communications Course following Andrea Goldsmith Textbook (2020 Draft available online)
This video covers :
Time-varying Channel impulse response
Delay spread and Coherence bandwidth (flat, selective , fast, slow) fading
Resolvable paths
Narrowband fading models
Uniform Scattering (US)
Rayleigh fading
Rician fading
Summary of Signal Envelope Distribution
Practice
To get the slides and additional resources, please visit the course website
sites.google.com/view/muqaibe...

[@lg260]

Could you please tell me how can i get the Rayleigh case by using Nakagami distribution following MATLAB code 'h=randraw('nakagami', 1, [1,n]); %m=1 case of Rayleigh'. I know , when m=1; case of Rayleigh but what about scale parameters n ( in other words omega) ?. Which n value do I need to choose as the scale parameter to obtain Rayleigh case by using following nakagami -m distribution matlab code 'h=randraw('nakagami', 1, [1,n]); %m=1 case of Rayleigh',

[@rayaalhajri6687]

C.BW= 1/DELAY SPREAD= 1/2 , C.T= 1/Doppler spread= 25 T = 20 , B = 5 then: C.B 5, then it is WideBand ( Frequency selective) Doppler Spread

[@hussamalraie3275]

Can I contact you please"

[@omarsayari6477]

A) CBW= 0.5Hz, CT= 25s B) flat fading channel C) slow fading, since T< CT

[@alimuqaibel7619]

Be careful Omar about B is it frequency selective or flat fading? @Omar Sayari

[@omarsayari6477]

@@alimuqaibel7619 Coherence BW > Signal BW, therefore a narrowband channel?

[@alimuqaibel7619]

@@omarsayari6477 0.5

[@mrOmar432]

@@alimuqaibel7619 Dear Dr Muqaibel, The time for transmission is 20, transmission BW is 1/20 = 0.05 Coherence BW = 1/2 = 0.5 Signal BW

[@alimuqaibel7619]

@@mrOmar432 assuming the BW is the inverse of time duration is a simplifying a assumption that we do if we have no more information. Remember the bandwidth depends on the exact pulse shape and details. Since the question specified the transmission bandwidth, there is no point of inverting the time to find the BW.