Hi Sanju,
For a given TDL channel object, the info() object function returns a structure containing information about the object, including the path delays and average path powers. This can be used to depict the long-term average impulse response:
tdl = nrTDLChannel;
tdlinfo = info(tdl);
stem(tdlinfo.PathDelays,db2mag(tdlinfo.AveragePathGains));
xlabel('Path delay (s)');
ylabel('Path magnitude');
Note that this depiction is a simplification as it omits a number of effects:
1. The time variation of actual path magnitudes due to fast fading according to the specified Doppler frequency
2. The presence of separate links between all transmit and receive antennas
3. The path delays are unlikely to be an integer multiple of the input sample rate, so the impulse response for each path is typically the coefficients of an FIR filter implementing a fractional delay, rather than a discrete impulse.
