how to include rayleigh fading or get the rayleigh distribution values???

• data0 = 0;
• sco = [1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0];
• out0 = xor(data0,sco);
• data1 = 1;
• sc1 = [1 1 0 0 0 0 1 1 0 0 1 1 1 1 0 0];
• out1 = xor(data1,sc1);
• data2 = 1;
• sc2 = [1 0 0 1 0 1 1 0 1 0 0 1 0 1 1 0];
• out2 = xor(data2,sc2);

I have a simple code which is performing the spread spectrum operation. I need to include rayleigh distribution in this program. I am confused how to do that on website it mentions using raychan which will display all the properties but i am not sure how to proceed with this as the next part of this program follows the approach of introducing noise and carrying out the despreading process.