Use the classical MIMO equation, for a 4x4 MIMO system, channel matrix is defined as [3 1 1 1; 1 4 1 1; 1 1 5 1; 1 1 6 1],

TX signals on each antenna for five time instances are,

s1=[1 2 3 4 5]

s2=[2 3 4 5 1]

s3=[3 4 5 1 2]

s4=[4 5 1 2 3]

Assume noise is uniformly distributed random number in the interval (0,1) (rand(4,1) in matlab command). Using Matlab, to calculate the received signal at each antenna for five time instances respectively.