RayleighChan in Matlab

Hello,

I am trying to implement a frequency selective fading channel for a
MIMO system.  I am using the matlab function RayleighChan in Matlab.  I
need to get the channel co-efficients for a given sampling period, time
delay, power delay profile, but this function returns only the path
gain of the channel.  Now, how do I get the channel co-efficients for
the system?

I really need to know what to do next so that I can progress from here.

Thanks for your help,
Praveen