[Moderated] BER/SER expression in frequency selective channel

[blade88]

Hello,

I am simulating a Single Carrier system, using linear and non linear equalizers, to cope with ISI.
The channel model I am using is '3gppTUx' in Matlab's stdchan function:

https://www.mathworks.com/help/comm/ref/stdchan.html

The parameters I use are:

% Sampling frequency in LTE with Bandwidth 1.25MHz
% Sample time=1/Sampling Frequency, in sec
ts = 5.21e-7;

% Maximum Doppler shift in Hz
fd = 5;

channel.ResetBeforeFiltering = 1;
channel.NormalizePathGains=1;
channel.StoreHistory=1;

corresponding to the LTE EPA channel model.

The resulting channel object is the following:

>> channel =
             ChannelType: 'Rayleigh'
       InputSamplePeriod: 5.2100e-07
         DopplerSpectrum: [1x1 doppler.jakes]
         MaxDopplerShift: 5
              PathDelays: [1x20 double]
           AvgPathGaindB: [1x20 double]
      NormalizePathGains: 1
            StoreHistory: 1
          StorePathGains: 0
               PathGains: [1x20 double]
      ChannelFilterDelay: 4
    ResetBeforeFiltering: 1
     NumSamplesProcessed: 0

I think that channel type 'Rayleigh' means that the envelope of the time varying taps follows the Rayleigh distribution (Please correct me if I am wrong here).

Now, my questions are the following:

1) In order to plot the theoretical BER/SER expressions of the system in this channel model, can I use Matlab's berfading function?

https://www.mathworks.com/help/comm/ref/berfading.html?refresh=true

2) What is the general approach in BER/SER theoretical expressions in frequency selective channels?

Any insight will be useful.


Thank you in advance.